{"title":"PWM Controllers \u0026 Power Management ICs — SMPS, Offline Switcher","description":"\u003ch2\u003ePWM Controllers \u0026amp; Power Management ICs — SMPS, Offline Switcher \u0026amp; Timer ICs\u003c\/h2\u003e\n\n\u003cp\u003ePWM (Pulse Width Modulation) controller ICs are the brain of switching power supplies — they regulate output voltage and current by controlling the duty cycle of a power switch. This collection covers the most commonly needed PWM controller and power management ICs for LCD monitor\/TV power board repair, USB charger repair, and offline SMPS design. Also includes the classic \u003cstrong\u003eNE555 timer IC\u003c\/strong\u003e for PWM generation, oscillator, and timing applications.\u003c\/p\u003e\n\n\u003ch3\u003eLCD Monitor \u0026amp; TV Power Board ICs (Fuji Electric FA55xx Series)\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFA5501:\u003c\/strong\u003e Current-mode PWM controller — flyback converter primary-side control in LCD power boards\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFA5511:\u003c\/strong\u003e Quasi-resonant PWM controller — high-efficiency offline flyback for LCD monitors and TVs\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFA5518:\u003c\/strong\u003e Enhanced quasi-resonant with frequency jitter for EMI reduction — LCD TV power supply\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFA5696:\u003c\/strong\u003e Integrated PFC + PWM controller — high-power LCD TV power supplies requiring power factor correction\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFA8A00:\u003c\/strong\u003e Advanced PWM with burst mode for ultra-low standby power — energy-efficient LCD power supply\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eOffline Switcher ICs (Power Integrations TinySwitch-III)\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTNY285DG (SOP-7):\u003c\/strong\u003e Up to 5W, integrated 700V MOSFET, auto-restart protection — USB charger and low-power adapter repair\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTimer \u0026amp; Oscillator ICs\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNE555 \/ LM555:\u003c\/strong\u003e Astable oscillator and monostable timer, 4.5V–16V, 0.1Hz–500kHz — PWM generation, LED flashers, tone generators, delay timers\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTypical Failure Symptoms (LCD Power Board)\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eMonitor completely dead — no power LED, no backlight\u003c\/li\u003e\n  \u003cli\u003eMonitor makes ticking or clicking sound (SMPS auto-restart cycling)\u003c\/li\u003e\n  \u003cli\u003eMonitor powers on briefly then shuts off\u003c\/li\u003e\n  \u003cli\u003eBacklight flickers or dims under load\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eRepair Workflow\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eIdentify the PWM controller IC on the power board (check part number against FA55xx or TNY series)\u003c\/li\u003e\n  \u003cli\u003eCheck for visible damage (burnt marks, swollen capacitors near the IC)\u003c\/li\u003e\n  \u003cli\u003eReplace the PWM controller IC with the matching part number from this collection\u003c\/li\u003e\n  \u003cli\u003eAlso replace the primary-side electrolytic capacitors if the board has been running hot\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eAll PWM controller ICs are new, original parts in SOP-7 and SOP-8 packages. Essential stock for LCD monitor and TV power board repair technicians.\u003c\/p\u003e","products":[{"product_id":"ne555-timer-module-adjustable-pwm","title":"NE555 Timer Module — Adjustable Frequency \u0026 Duty Cycle, PWM Output","description":"\u003ch2\u003eNE555 Timer Module — Adjustable Frequency \u0026amp; Duty Cycle, PWM Output\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eNE555 timer module\u003c\/strong\u003e generates a \u003cstrong\u003esquare wave PWM output\u003c\/strong\u003e with independently adjustable \u003cstrong\u003efrequency and duty cycle\u003c\/strong\u003e via two on-board potentiometers. No microcontroller needed — a standalone pulse generator for motor speed control, LED dimming, and timing circuits. Includes a \u003cstrong\u003epower LED\u003c\/strong\u003e and \u003cstrong\u003eoutput LED\u003c\/strong\u003e for visual feedback.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e✅ \u003cstrong\u003eAdjustable frequency\u003c\/strong\u003e — potentiometer control from Hz to kHz range\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003eAdjustable duty cycle\u003c\/strong\u003e — independent potentiometer for 0–100% duty cycle\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003ePWM square wave output\u003c\/strong\u003e — direct connection to motor drivers and LED drivers\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003ePower \u0026amp; output LEDs\u003c\/strong\u003e — visual confirmation of power and pulse output\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003e5–15V supply\u003c\/strong\u003e — wide voltage range for various applications\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003eRoHS compliant\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eKey Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eIC: \u003cstrong\u003eNE555\u003c\/strong\u003e | Output: \u003cstrong\u003ePWM square wave\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eSupply: \u003cstrong\u003e5–15V\u003c\/strong\u003e | Frequency: \u003cstrong\u003eadjustable (Hz to kHz)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eDuty cycle: \u003cstrong\u003eadjustable (0–100%)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTypical Applications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eStandalone PWM motor speed controller\u003c\/li\u003e\n\u003cli\u003eLED dimmer without microcontroller\u003c\/li\u003e\n\u003cli\u003ePulse generator for timing and testing\u003c\/li\u003e\n\u003cli\u003eStepper motor pulse source\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Keszoox","offers":[{"title":"Default Title","offer_id":45670705365227,"sku":"","price":13.72,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/1005\/8731\/files\/NE555-Timer-Module.jpg?v=1723009401"},{"product_id":"ne555-timer","title":"NE555 Timer IC DIP-8 — Monostable \/ Astable, 4.5–16V, 200mA Output, Arduino","description":"\u003ch2\u003eNE555 Timer IC — The Universal Timer\/Oscillator, DIP-8\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003eNE555\u003c\/strong\u003e is the most iconic and widely used timer IC ever produced — over 1 billion units are manufactured annually, and it has been in continuous production since 1972. In a single 8-pin DIP package, the NE555 implements a precision timing circuit that can operate as a \u003cstrong\u003emonostable (one-shot) timer\u003c\/strong\u003e, an \u003cstrong\u003eastable (free-running) oscillator\u003c\/strong\u003e, or a \u003cstrong\u003ebistable flip-flop\u003c\/strong\u003e, with timing adjustable from microseconds to hours using just a few resistors and a capacitor. Its 200mA output drive capability means it can directly drive LEDs, small relays, buzzers, and speaker elements without additional transistors.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMonostable, astable, and bistable modes\u003c\/strong\u003e — one IC, three operating modes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTiming range:\u003c\/strong\u003e microseconds to hours — set by external R and C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput drive:\u003c\/strong\u003e sink or source up to \u003cstrong\u003e200mA\u003c\/strong\u003e — directly drives LEDs, relays, buzzers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSupply voltage:\u003c\/strong\u003e 4.5–16V — works with 5V Arduino and 9V\/12V supplies\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e5V logic compatible\u003c\/strong\u003e output levels at 5V supply\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdjustable duty cycle\u003c\/strong\u003e in astable mode\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature stable\u003c\/strong\u003e — 0.005% per °C drift\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDIP-8 package\u003c\/strong\u003e — breadboard and through-hole PCB compatible\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4.5–16V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSupply Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e6–15mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput Current (sink\/source)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e±200mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax Frequency (astable)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e~500kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTiming Accuracy\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e±1% (typical)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTemperature Drift\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.005% \/ °C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePackage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDIP-8 (through-hole)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eManufacturer\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTexas Instruments \/ STMicroelectronics \/ ON Semiconductor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eOperating Modes\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMonostable (one-shot):\u003c\/strong\u003e Triggered by a pulse, outputs a single pulse of duration T = 1.1 × R × C. Used for debouncing, delay timers, and pulse stretching.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAstable (oscillator):\u003c\/strong\u003e Free-running square wave output. Frequency f = 1.44 \/ ((R1 + 2×R2) × C). Used for LED flashers, tone generation, PWM, and clock signals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBistable (flip-flop):\u003c\/strong\u003e Set\/Reset latch using TRIGGER and RESET pins. Used for switch debouncing and latching circuits.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTypical Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eLED flasher and blinker circuits\u003c\/li\u003e\n\u003cli\u003eTone and alarm generator (buzzer driver)\u003c\/li\u003e\n\u003cli\u003ePWM signal generation for motor speed control\u003c\/li\u003e\n\u003cli\u003eDelay timer for relay activation\u003c\/li\u003e\n\u003cli\u003eMissing pulse detector\u003c\/li\u003e\n\u003cli\u003eSwitch debounce circuit\u003c\/li\u003e\n\u003cli\u003eClock signal generator for digital circuits\u003c\/li\u003e\n\u003cli\u003eArduino project timing and oscillator circuits\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003ePackage Contents\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e1 × NE555 Timer IC (DIP-8, through-hole)\u003c\/li\u003e\u003c\/ul\u003e\u003cp\u003e\u003cem\u003e\u003ca href=\"http:\/\/www.ti.com\/lit\/ds\/symlink\/ne555.pdf\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eNE555 Datasheet (Texas Instruments PDF)\u003c\/a\u003e\u003c\/em\u003e\u003c\/p\u003e","brand":"Keszoox","offers":[{"title":"Default Title","offer_id":45674475978987,"sku":"","price":5.47,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/1005\/8731\/files\/NE555-Timer-1.jpg?v=1723007328"},{"product_id":"tlc555i-timer","title":"TLC555I CMOS Timer IC DIP-8 — Low-Power, 2V–15V, Rail-to-Rail Output, Arduino","description":"\u003ch2\u003eTLC555I CMOS Timer IC — Low-Power 555 Alternative, DIP-8\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003eTLC555I\u003c\/strong\u003e is a CMOS implementation of the classic 555 timer, offering the same monostable, astable, and bistable operating modes as the NE555 but with dramatically lower power consumption and a wider supply voltage range. Where the bipolar NE555 draws 6–15mA of supply current, the TLC555I draws as little as \u003cstrong\u003e170μA\u003c\/strong\u003e — making it the preferred choice for battery-powered timing circuits, sleep-mode wake timers, and any application where the 555 timer must run continuously from a limited power source.\u003c\/p\u003e\u003cp\u003eThe TLC555I also features \u003cstrong\u003erail-to-rail output swing\u003c\/strong\u003e and CMOS-compatible input thresholds, making it a direct drop-in replacement for the NE555 in most circuits while adding significant power savings.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCMOS low-power design\u003c\/strong\u003e — 170μA typical supply current (vs 6–15mA for NE555)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide supply voltage:\u003c\/strong\u003e 2V–15V — operates from 2 × AA batteries to 12V supplies\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRail-to-rail output\u003c\/strong\u003e — output swings close to VCC and GND\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCMOS-compatible inputs\u003c\/strong\u003e — works with 3.3V and 5V logic\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSame pinout as NE555\u003c\/strong\u003e — direct drop-in replacement in most circuits\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eMonostable, astable, and bistable modes\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDIP-8 package\u003c\/strong\u003e — breadboard and through-hole PCB compatible\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSupply Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2V – 15V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSupply Current (typical)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e170μA @ 5V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput Current (sink\/source)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e100mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax Frequency (astable)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e~2MHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput Threshold\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCMOS-compatible (VCC\/3 and 2×VCC\/3)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput Swing\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRail-to-rail\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePackage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDIP-8 (through-hole)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eManufacturer\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTexas Instruments\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eTLC555I vs NE555 — When to Choose Each\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNE555 (bipolar):\u003c\/strong\u003e 6–15mA supply current, 200mA output drive, 4.5–16V — best for high-output-current applications (relay drivers, buzzers)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTLC555I (CMOS, this):\u003c\/strong\u003e 170μA supply current, 100mA output, 2–15V — best for battery-powered circuits, low-power timers, and 3.3V systems\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTypical Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eBattery-powered LED flasher and blinker (ultra-low quiescent current)\u003c\/li\u003e\n\u003cli\u003eSleep-mode wake timer for microcontroller power management\u003c\/li\u003e\n\u003cli\u003eLow-power PWM signal generator\u003c\/li\u003e\n\u003cli\u003ePrecision delay timer in portable instruments\u003c\/li\u003e\n\u003cli\u003eTone generator for battery-powered alarms\u003c\/li\u003e\n\u003cli\u003e3.3V system timing circuits (CMOS-compatible thresholds)\u003c\/li\u003e\n\u003cli\u003eDrop-in NE555 replacement with power savings\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003ePackage Contents\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e1 × TLC555I CMOS Timer IC (DIP-8, Texas Instruments)\u003c\/li\u003e\u003c\/ul\u003e\u003cp\u003e\u003cem\u003e\u003ca href=\"https:\/\/www.ti.com\/lit\/ds\/symlink\/tlc555.pdf\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eTLC555I Datasheet (Texas Instruments PDF)\u003c\/a\u003e\u003c\/em\u003e\u003c\/p\u003e","brand":"Keszoox","offers":[{"title":"Default Title","offer_id":45674496688363,"sku":"","price":3.72,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/1005\/8731\/files\/TLC555IP-Timer.jpg?v=1723007245"},{"product_id":"cd4017-rotating-led-smd-and-ne555-diy-soldering-practice-board-kit-for-electronics-skill-training","title":"CD4017 Rotating LED SMD and NE555 DIY Soldering Practice Board Kit for Electronics Skill Training","description":"\u003ch1\u003eSPECIFICATIONS\u003c\/h1\u003e\u003cp\u003e\u003cspan\u003eApplication\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eComputer\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eBrand Name\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eKeszoox\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eCondition\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eNew\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eDissipation Power\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003e1\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eHigh-concerned chemical\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eNone\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eOperating Temperature\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003e1\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eOrigin\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eMainland China\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003ePackage\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eSMD\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eQuantity\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003e1\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eSupply Voltage\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003e3-12V\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eTime\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003e35minute\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eType\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eVoltage Regulator\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eis_customized\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eYes\u003c\/span\u003e\u003c\/p\u003e\u003cdiv class=\"detailmodule_text-image\"\u003e\u003cp style=\"font-family:OpenSans;font-size:14px;font-weight:300;line-height:20px;white-space:pre-wrap;color:rgb(0, 0, 0);margin-bottom:12px\" class=\"detail-desc-decorate-content\"\u003e1. Board size: 90*60MM\u003cbr\u003e2. Board thickness: 1.6mm\u003cbr\u003e3. Board material: International standard board, all pads are tinned, high-strength fireproof and drop-proof materials, can be disassembled and assembled repeatedly.\u003cbr\u003e4. The PCB board is reasonably designed, and commonly used patch components are used.\u003cbr\u003e5. The 3 columns of components on the left and right are used to practice welding, and each column has a test point.\u003cbr\u003e6. The circular circuit in the middle is a running light circuit, which is composed of CD4017, NE555, and light-emitting diodes. After the welding is correct, it can work after power is turned on.\u003cbr\u003e7. The back of the circuit is also used, with a ruler for easy measurement of components. There are PCB wire examples for easy use in PCB design.\u003cbr\u003e8. Circuit operating voltage 3~12V\u003cbr\u003e8. This kit contains all the components in the following photos.\u003cbr\u003eNumber of components: 125\u003cbr\u003eNumber of solder joints: 274\u003cbr\u003eLength of solder used: 35CM (diameter: 0.6mm)\u003cbr\u003eSample welding time: 35 minutes\u003c\/p\u003e\u003c\/div\u003e\u003cdiv class=\"detailmodule_text-image\"\u003e\n\u003cimg class=\"detail-desc-decorate-image\" src=\"https:\/\/ae01.alicdn.com\/kf\/S963be08865154a888312211fafb4c3b2S.png\" slate-data-type=\"image\"\u003e\u003cimg class=\"detail-desc-decorate-image\" src=\"https:\/\/ae01.alicdn.com\/kf\/S44d20f5b9b094a70aaeb96181554c23a8.png\" slate-data-type=\"image\"\u003e\u003cimg class=\"detail-desc-decorate-image\" src=\"https:\/\/ae01.alicdn.com\/kf\/Saaec2b05220246c58df265a9972fa266y.png\" slate-data-type=\"image\"\u003e\n\u003c\/div\u003e\u003cdiv class=\"detailmodule_text-image\"\u003e\n\u003cimg class=\"detail-desc-decorate-image\" src=\"https:\/\/ae01.alicdn.com\/kf\/Sfbc518e390764cb0bbf08f06f648df31g.jpg\" slate-data-type=\"image\"\u003e\u003cimg class=\"detail-desc-decorate-image\" src=\"https:\/\/ae01.alicdn.com\/kf\/Sf889fadec4e24cddaaa2021028afeab86.jpg\" slate-data-type=\"image\"\u003e\u003cimg class=\"detail-desc-decorate-image\" src=\"https:\/\/ae01.alicdn.com\/kf\/Sd3f66d68f47c4ba9b9cb05a9e2bb1f951.png\" slate-data-type=\"image\"\u003e\n\u003c\/div\u003e\u003cbr\u003e","brand":"Keszoox","offers":[{"title":"CHINA","offer_id":46978925166827,"sku":"200007763:201336100","price":4.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/1005\/8731\/files\/cd4017-rotating-led-ne555-diy-soldering-kit.webp?v=1761028698"},{"product_id":"ne555-monostable-relay-delay-timer-module-12v-adjustable-switch-automotive-diy","title":"NE555 Monostable Relay Delay Timer Module 12V Adjustable Switch for Automotive DIY","description":"\u003ch2\u003eNE555 Monostable Relay Delay Timer Module — 12V Adjustable Switch, Automotive\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003eNE555 monostable relay delay timer module\u003c\/strong\u003e is a compact 12V switching module designed for automotive and DIY electronics applications. Adjustable delay time allows flexible control of relay output for time-delayed switching circuits.\u003c\/p\u003e\u003chr\u003e\u003ch3\u003eKey Specifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIC:\u003c\/strong\u003e NE555 timer chip\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWorking voltage:\u003c\/strong\u003e 12V DC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMode:\u003c\/strong\u003e Monostable (one-shot)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput:\u003c\/strong\u003e Relay switch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDelay time:\u003c\/strong\u003e Adjustable\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Automotive, DIY electronics, general switching\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCertification:\u003c\/strong\u003e CE\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch3\u003eTypical Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eAutomotive time-delay relay switching\u003c\/li\u003e\n\u003cli\u003eDIY electronics projects\u003c\/li\u003e\n\u003cli\u003eGeneral purpose monostable timer circuits\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch3\u003ePackage Contents\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e1 × NE555 relay delay timer module\u003c\/li\u003e\u003c\/ul\u003e","brand":"Keszoox","offers":[{"title":"NE555 delay 5V","offer_id":46985495740651,"sku":"14:350852#NE555 delay 5V","price":8.48,"currency_code":"USD","in_stock":true},{"title":"NE555 delay 12V","offer_id":46985495773419,"sku":"14:1202#NE555 delay 12V","price":24.56,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/1005\/8731\/files\/ne555-relay-delay-module-monostable-12v-automotive.webp?v=1761287454"},{"product_id":"tny285dg-offline-switcher-ic-sop7-tinyswitch-iii-2pcs","title":"TNY285DG Offline Switcher IC SOP-7 – Pack of 2 (TinySwitch-III, Power Management)","description":"\u003ch2\u003eTNY285DG Offline Switcher IC – SOP-7, Pack of 2 (TinySwitch-III)\u003c\/h2\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eTNY285DG\u003c\/strong\u003e is a member of Power Integrations' \u003cstrong\u003eTinySwitch-III\u003c\/strong\u003e family – a highly integrated offline switcher IC that combines a high-voltage power MOSFET, PWM controller, oscillator, and comprehensive protection functions into a single SOP-7 package. Designed for low-power offline flyback power supplies (up to 5W), it dramatically reduces component count compared to discrete SMPS designs. The TNY285DG is widely used in USB chargers, phone adapters, and low-power consumer electronics power supplies – making it one of the most commonly replaced ICs in charger repair. This 2-piece SOP-7 pack is ideal for repair technicians.\u003c\/p\u003e\n\n\u003ch3\u003eElectrical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e TNY285DG (SOP-7) \/ TNY285PN (DIP-8)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage:\u003c\/strong\u003e SOP-7 (SMD, 1.27mm pitch, 7-pin)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFamily:\u003c\/strong\u003e TinySwitch-III (Power Integrations)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutput Power:\u003c\/strong\u003e Up to 5W (85–265VAC input, open-frame design)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIntegrated MOSFET:\u003c\/strong\u003e 700V N-channel MOSFET (no external MOSFET needed)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSwitching Frequency:\u003c\/strong\u003e 132kHz (typical)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInput Voltage:\u003c\/strong\u003e 85VAC – 265VAC (universal mains)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEnable\/Undervoltage:\u003c\/strong\u003e EN\/UV pin for feedback and auto-restart\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProtection:\u003c\/strong\u003e Cycle-by-cycle current limiting, auto-restart (OCP\/OVP), thermal shutdown\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandby Power:\u003c\/strong\u003e \u0026lt;30mW (no-load, 230VAC)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOperating Temperature:\u003c\/strong\u003e −40°C to +150°C (junction)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTinySwitch-III – How It Simplifies SMPS Design\u003c\/h3\u003e\n\u003cp\u003eTraditional offline SMPS requires a separate PWM controller IC, power MOSFET, gate driver, startup resistors, and current sense circuit. The TNY285DG integrates all of these into one SOP-7 IC – the only external components needed are the transformer, output diode, filter capacitors, and optocoupler feedback circuit. This reduces BOM count by 50% and PCB area significantly.\u003c\/p\u003e\n\n\u003ch3\u003eTypical Failure Symptoms (When TNY285DG Fails)\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eUSB charger or adapter completely dead – no output voltage\u003c\/li\u003e\n  \u003cli\u003eCharger makes ticking sound (auto-restart cycling)\u003c\/li\u003e\n  \u003cli\u003eOutput voltage present but drops under load\u003c\/li\u003e\n  \u003cli\u003eCharger works intermittently or gets very hot\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTypical Applications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUSB charger repair:\u003c\/strong\u003e Most common application – replacement for failed TNY285 in phone chargers\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAC-DC adapter repair:\u003c\/strong\u003e Low-power adapter SMPS controller replacement\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConsumer electronics power supply:\u003c\/strong\u003e Set-top box, router, and IoT device power supply\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLED driver power supply:\u003c\/strong\u003e Offline flyback converter for LED lighting\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIndustrial low-power SMPS:\u003c\/strong\u003e Auxiliary power supply design\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003ePackage Contents\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2 × TNY285DG SOP-7 TinySwitch-III offline switcher ICs\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eAn entire offline SMPS controller in one SOP-7 IC – the TNY285DG is the most common IC in USB charger and low-power adapter repair, integrating the MOSFET, PWM controller, and protection in a single package.\u003c\/p\u003e","brand":"Keszoox","offers":[{"title":"TNY285DG","offer_id":46985495970027,"sku":"14:1202#TNY285DG","price":35.24,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/1005\/8731\/files\/tny285dg-power-management-ic-smd-sop7.webp?v=1761287063"},{"product_id":"top262-264-265-266-267-268-269-270-271-esip-7c-power-management-ics","title":"TOP262\/264\/265\/266\/267\/268\/269\/270\/271 ESIP-7C Power Management ICs","description":"\u003ch1\u003eSPECIFICATIONS\u003c\/h1\u003e\u003cp\u003e\u003cspan\u003eApplication\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003estandard\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eBrand Name\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eKeszoox\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eChoice\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eyes\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eCondition\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eNew\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eDissipation Power\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003estandard\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eHigh-concerned chemical\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eNone\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eOperating Temperature\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003estandard\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eOrigin\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eMainland China\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003ePackage\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eSIP-7C\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eSupply Voltage\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003estandard\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eType\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eVoltage Regulator\u003c\/span\u003e\u003c\/p\u003e\u003cdiv class=\"detailmodule_html\"\u003e\u003cdiv class=\"detail-desc-decorate-richtext\"\u003e\n\u003cdiv\u003e\n \u003cp\u003e\u003cimg style=\"width:800px\" width=\"800px\" src=\"https:\/\/ae01.alicdn.com\/kf\/S0e21b31a354d4289bbadaf8a3b46d5b4o.jpg\" slate-data-type=\"image\" data-src=\"https:\/\/ae01.alicdn.com\/kf\/Sfbd3ccf65bab493eb505901b18061eb9L.jpg\"\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cimg style=\"width:800px\" width=\"800px\" src=\"https:\/\/ae01.alicdn.com\/kf\/S4773dcc652a4420b89fc2d6ee201354eA.jpg\" slate-data-type=\"image\" data-src=\"https:\/\/ae01.alicdn.com\/kf\/S9c60ce1f513343c19bb4de021bf7c2abn.jpg\"\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cbr\u003e\n\u003c\/div\u003e\u003c\/div\u003e","brand":"Keszoox","offers":[{"title":"TOP269","offer_id":46985505898731,"sku":"14:29#TOP269","price":10.36,"currency_code":"USD","in_stock":true},{"title":"TOP271","offer_id":46985505931499,"sku":"14:173#TOP271","price":27.8,"currency_code":"USD","in_stock":true},{"title":"TOP264","offer_id":46985505964267,"sku":"14:350852#TOP264","price":8.96,"currency_code":"USD","in_stock":true},{"title":"TOP262","offer_id":46985505997035,"sku":"14:1202#TOP262","price":26.68,"currency_code":"USD","in_stock":true},{"title":"TOP266","offer_id":46985506029803,"sku":"14:4044226#TOP266","price":26.68,"currency_code":"USD","in_stock":true},{"title":"TOP265","offer_id":46985506062571,"sku":"14:351074#TOP265","price":9.04,"currency_code":"USD","in_stock":true},{"title":"TOP268","offer_id":46985506095339,"sku":"14:10#TOP268","price":8.6,"currency_code":"USD","in_stock":true},{"title":"TOP267","offer_id":46985506128107,"sku":"14:201659813#TOP267","price":9.12,"currency_code":"USD","in_stock":true},{"title":"TOP270","offer_id":46985506160875,"sku":"14:94#TOP270","price":9.64,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/1005\/8731\/files\/top262-to-top271-esip-7c-power-ics.webp?v=1761279363"},{"product_id":"20pcs-ne555-ne555p-ne555n-dip-8-precision-timer-ic-for-oscillator-and-programming","title":"20PCS NE555 \/ NE555P \/ NE555N DIP-8 Precision Timer IC for Oscillator and Programming","description":"\u003ch2\u003eNE555 \/ NE555P \/ NE555N DIP-8 Precision Timer IC — 20PCS, Oscillator \u0026amp; Timing Circuits\u003c\/h2\u003e\n\u003cp\u003eThe NE555 is the world’s most widely used timer IC, providing precise timing, oscillation, and pulse generation in a standard DIP-8 package. This 20-piece pack of NE555 \/ NE555P \/ NE555N ICs covers all three standard operating modes — astable (oscillator), monostable (one-shot timer), and bistable (flip-flop) — making it the essential building block for timing circuits, PWM generators, LED flashers, tone generators, and countless other analogue and mixed-signal applications.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eIC Type\u003c\/td\u003e\n\u003ctd\u003eNE555 \/ NE555P \/ NE555N (equivalent)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackage\u003c\/td\u003e\n\u003ctd\u003eDIP-8 (through-hole)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupply Voltage\u003c\/td\u003e\n\u003ctd\u003e4.5V – 16V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Current\u003c\/td\u003e\n\u003ctd\u003e200mA source \/ sink\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTiming Accuracy\u003c\/td\u003e\n\u003ctd\u003e±1% (temperature stable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency Range\u003c\/td\u003e\n\u003ctd\u003eDC to 500kHz (astable mode)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e0°C to +70°C (NE grade)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Modes\u003c\/td\u003e\n\u003ctd\u003eAstable, Monostable, Bistable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTrigger Input\u003c\/td\u003e\n\u003ctd\u003eActive low (triggers below 1\/3 VCC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReset Input\u003c\/td\u003e\n\u003ctd\u003eActive low (overrides all modes)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePack Quantity\u003c\/td\u003e\n\u003ctd\u003e20PCS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCertification\u003c\/td\u003e\n\u003ctd\u003eRoHS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eOperating Mode Reference\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eMode\u003c\/th\u003e\n\u003cth\u003eConfiguration\u003c\/th\u003e\n\u003cth\u003eOutput\u003c\/th\u003e\n\u003cth\u003eUse Case\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAstable\u003c\/td\u003e\n\u003ctd\u003eR1, R2, C between pins\u003c\/td\u003e\n\u003ctd\u003eContinuous square wave\u003c\/td\u003e\n\u003ctd\u003eOscillator, LED flasher, PWM, tone generator\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMonostable\u003c\/td\u003e\n\u003ctd\u003eR, C + trigger input\u003c\/td\u003e\n\u003ctd\u003eSingle pulse on trigger\u003c\/td\u003e\n\u003ctd\u003eDebounce, delay timer, one-shot pulse\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBistable\u003c\/td\u003e\n\u003ctd\u003eSet\/Reset inputs\u003c\/td\u003e\n\u003ctd\u003eLatched high\/low\u003c\/td\u003e\n\u003ctd\u003eSR flip-flop, memory element\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eAstable Frequency Formula\u003c\/h3\u003e\n\u003cp\u003ef = 1.44 \/ ((R1 + 2×R2) × C)\u003c\/p\u003e\n\u003cp\u003eDuty cycle = (R1 + R2) \/ (R1 + 2×R2) × 100%\u003c\/p\u003e\n\u003ch3\u003eMonostable Pulse Width Formula\u003c\/h3\u003e\n\u003cp\u003et = 1.1 × R × C (seconds, with R in ohms and C in farads)\u003c\/p\u003e\n\u003ch3\u003eTypical Applications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLED Flasher:\u003c\/strong\u003e Astable oscillator driving an LED at 1–10Hz for indicator, alarm, and decorative lighting applications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePWM Motor Speed Control:\u003c\/strong\u003e Astable NE555 generating a variable duty cycle PWM signal for DC motor speed control via MOSFET or BJT driver\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTone Generator:\u003c\/strong\u003e Astable oscillator in the audio frequency range (20Hz–20kHz) driving a piezo buzzer or speaker for alarm and notification tones\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSwitch Debounce:\u003c\/strong\u003e Monostable timer providing a clean, debounced output pulse from a noisy mechanical switch or button input\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDelay Timer:\u003c\/strong\u003e Monostable timer providing a precise time delay (milliseconds to hours) for relay activation, power sequencing, and timed shutoff circuits\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMissing Pulse Detector:\u003c\/strong\u003e Monostable timer reset by an input pulse — output goes high if the input pulse is missing for longer than the timeout period\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage-Controlled Oscillator:\u003c\/strong\u003e Control oscillator frequency via the CV (control voltage) pin for simple VCO and modulation applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the difference between NE555, NE555P, and NE555N?\u003c\/strong\u003e\u003cbr\u003eA: These are equivalent parts from different manufacturers — NE555 (Texas Instruments original), NE555P (TI DIP-8 suffix), NE555N (Philips\/NXP designation). All are electrically identical and pin-compatible.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can the NE555 directly drive a relay?\u003c\/strong\u003e\u003cbr\u003eA: Yes. The NE555 output can source or sink up to 200mA, sufficient to drive a 5V or 12V relay coil directly (with a flyback diode across the relay coil to protect the IC from back-EMF).\u003c\/p\u003e\n\u003ch3\u003ePackage Contents\u003c\/h3\u003e\n\u003cul\u003e\u003cli\u003e20 × NE555 \/ NE555P \/ NE555N DIP-8 precision timer IC\u003c\/li\u003e\u003c\/ul\u003e","brand":"Keszoox","offers":[{"title":"Default Title","offer_id":46985521791211,"sku":"\u003cnone\u003e","price":11.4,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/1005\/8731\/files\/ne555-dip8-precision-timer-ic.webp?v=1761275782"},{"product_id":"5pcs-ne555p-dip-8-high-precision-single-timer-ic","title":"5PCS NE555P DIP-8 High-Precision Single Timer IC","description":"\u003ch1\u003eSPECIFICATIONS\u003c\/h1\u003e\u003cp\u003e\u003cspan\u003eBrand Name\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eKeszoox\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eChoice\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eyes\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eCondition\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eNew\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eDissipation Power\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003estandard\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eHigh-concerned chemical\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eNone\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eOperating Temperature\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003estandard\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eOrigin\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eMainland China\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003ePackage\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eDIP\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eSupply Voltage\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003estandard\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eType\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eLogic ICs\u003c\/span\u003e\u003c\/p\u003e\u003cdiv class=\"detailmodule_html\"\u003e\u003cdiv class=\"detail-desc-decorate-richtext\"\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cimg style=\"width:800px;\" width=\"800px\" src=\"https:\/\/ae01.alicdn.com\/kf\/S0e21b31a354d4289bbadaf8a3b46d5b4o.jpg\" slate-data-type=\"image\" data-src=\"https:\/\/ae01.alicdn.com\/kf\/Sa3f7062e3c1f4ffca783d77962bae3ffY.jpg\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg style=\"width:800px;\" width=\"800px\" src=\"https:\/\/ae01.alicdn.com\/kf\/S4773dcc652a4420b89fc2d6ee201354eA.jpg\" slate-data-type=\"image\" data-src=\"https:\/\/ae01.alicdn.com\/kf\/S8f77cefb9333473ea01e39c48fa20777Y.jpg\"\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cbr\u003e\n\u003c\/div\u003e\u003c\/div\u003e","brand":"Keszoox","offers":[{"title":"Default Title","offer_id":46985535946987,"sku":"\u003cnone\u003e","price":7.16,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/1005\/8731\/files\/ne555p-dip8-high-precision-timer-ic.webp?v=1761202228"},{"product_id":"tmi-series-sot23-6-power-management-ic-5pcs-smd","title":"TMI Series SOT23-6 Power Management ICs 5PCS | TMI3222 TMI3252 TMI3253 TMI3274 TMI3280 TMI3281 and More","description":"\u003ch2\u003eTMI Series SOT23-6 Power Management ICs — 5PCS SMD\u003c\/h2\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eTMI series\u003c\/strong\u003e from TMI (Techcode Microelectronics) covers a range of high-performance SOT23-6 SMD power management ICs including LED drivers, DC-DC converters, and switching regulators. These compact 6-pin SOT23 packages deliver sophisticated power management functionality in a minimal PCB footprint — ideal for portable electronics, LED lighting drivers, battery-powered devices, and space-constrained power supply designs. Available in 13 model variants to match your specific application requirements.\u003c\/p\u003e\n\n\u003ch3\u003eAvailable Models \u0026amp; Key Applications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eType\u003c\/th\u003e\n\u003cth\u003eKey Application\u003c\/th\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTMI3222\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLED Driver \/ DC-DC\u003c\/td\u003e\n\u003ctd\u003eConstant current LED driver\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTMI3244T\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePower Management\u003c\/td\u003e\n\u003ctd\u003eBattery charging \/ power path\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTMI3252\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDC-DC Converter\u003c\/td\u003e\n\u003ctd\u003eStep-down (buck) converter\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTMI3252S\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDC-DC Converter\u003c\/td\u003e\n\u003ctd\u003eStep-down (buck) converter, S variant\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTMI3252T\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDC-DC Converter\u003c\/td\u003e\n\u003ctd\u003eStep-down (buck) converter, T variant\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTMI3253S\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDC-DC Converter\u003c\/td\u003e\n\u003ctd\u003eHigh-efficiency buck converter\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTMI3253SH\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDC-DC Converter\u003c\/td\u003e\n\u003ctd\u003eHigh-efficiency buck converter, H variant\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTMI3253T\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDC-DC Converter\u003c\/td\u003e\n\u003ctd\u003eHigh-efficiency buck converter, T variant\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTMI3274T\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePower Management\u003c\/td\u003e\n\u003ctd\u003eLDO \/ power management\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTMI3280\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePower Management\u003c\/td\u003e\n\u003ctd\u003eHigh-side switch \/ load switch\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTMI3281\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePower Management\u003c\/td\u003e\n\u003ctd\u003eLoad switch \/ power distribution\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTMI3113B\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLED Driver\u003c\/td\u003e\n\u003ctd\u003eBoost LED driver\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTMI3113H2\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLED Driver\u003c\/td\u003e\n\u003ctd\u003eBoost LED driver, H2 variant\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003ePackage Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePackage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSOT23-6 (6-pin small outline transistor)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMount Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSMD (surface mount)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eQuantity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5PCS per pack\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNew, original\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOrigin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMainland China\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eWhy SOT23-6?\u003c\/h3\u003e\n\u003cp\u003eThe SOT23-6 package is the industry standard for compact power management ICs. Its 6-pin configuration provides enough I\/O for sophisticated control functions (enable, feedback, compensation, soft-start) while maintaining a PCB footprint of just 2.9 × 1.6mm. This makes it the preferred package for:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePortable and wearable electronics where board space is critical\u003c\/li\u003e\n  \u003cli\u003eLED driver circuits requiring constant current control\u003c\/li\u003e\n  \u003cli\u003eBattery-powered devices needing efficient DC-DC conversion\u003c\/li\u003e\n  \u003cli\u003eIoT modules and sensor nodes with tight power budgets\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e✅ \u003cstrong\u003e13 model variants available\u003c\/strong\u003e — LED drivers, buck converters, load switches, and LDOs in one product line\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eSOT23-6 SMD package\u003c\/strong\u003e — minimal PCB footprint for space-constrained designs\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eHigh switching efficiency\u003c\/strong\u003e — TMI series ICs are optimised for low quiescent current and high conversion efficiency\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003e5PCS per pack\u003c\/strong\u003e — cost-effective for prototyping and small production runs\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eNew original parts\u003c\/strong\u003e — genuine TMI components, not remarked or counterfeit\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCommon Applications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eLED strip and panel driver circuits\u003c\/li\u003e\n  \u003cli\u003eLi-ion \/ LiPo battery charger power stages\u003c\/li\u003e\n  \u003cli\u003eDC-DC step-down (buck) converter modules\u003c\/li\u003e\n  \u003cli\u003eIoT sensor node power management\u003c\/li\u003e\n  \u003cli\u003ePortable device power rails\u003c\/li\u003e\n  \u003cli\u003eAutomotive interior LED lighting drivers\u003c\/li\u003e\n  \u003cli\u003eSolar energy harvesting power management\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How do I select the right TMI model for my application?\u003c\/strong\u003e\u003cbr\u003eA: Refer to the model table above for application guidance. Download the specific datasheet for your chosen model from the TMI (Techcode Microelectronics) website for full electrical specifications, application circuits, and layout guidelines.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Are these genuine TMI parts?\u003c\/strong\u003e\u003cbr\u003eA: Yes. These are new, original TMI series ICs. Each part is marked with the TMI logo and model number on the SOT23-6 body.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I hand-solder SOT23-6 packages?\u003c\/strong\u003e\u003cbr\u003eA: Yes, with a fine-tip soldering iron (0.5–1mm tip), flux, and thin solder (0.3–0.5mm). A hot air rework station or reflow oven is recommended for production use.\u003c\/p\u003e\n\n\u003ch3\u003ePackage Contents\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e5× TMI Series SOT23-6 IC (model as selected)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Keszoox","offers":[{"title":"TMI3274T","offer_id":46985541288171,"sku":"14:175#TMI3274T","price":18.64,"currency_code":"USD","in_stock":true},{"title":"TMI3280","offer_id":46985541320939,"sku":"14:193#TMI3280","price":33.92,"currency_code":"USD","in_stock":true},{"title":"TMI3113H2","offer_id":46985541353707,"sku":"14:1202#TMI3113H2","price":14.76,"currency_code":"USD","in_stock":true},{"title":"TMI3252S","offer_id":46985541386475,"sku":"14:201659813#TMI3252S","price":23.96,"currency_code":"USD","in_stock":true},{"title":"TMI3253SH","offer_id":46985541419243,"sku":"14:94#TMI3253SH","price":29.0,"currency_code":"USD","in_stock":true},{"title":"TMI3253T","offer_id":46985541452011,"sku":"14:173#TMI3253T","price":26.92,"currency_code":"USD","in_stock":true},{"title":"TMI3113B","offer_id":46985541484779,"sku":"14:496#TMI3113B","price":32.0,"currency_code":"USD","in_stock":true},{"title":"TMI3253S","offer_id":46985541517547,"sku":"14:29#TMI3253S","price":9.48,"currency_code":"USD","in_stock":true},{"title":"TMI3281","offer_id":46985541550315,"sku":"14:366#TMI3281","price":9.4,"currency_code":"USD","in_stock":true},{"title":"TMI3252T","offer_id":46985541583083,"sku":"14:10#TMI3252T","price":27.08,"currency_code":"USD","in_stock":true},{"title":"TMI3222","offer_id":46985541615851,"sku":"14:350852#TMI3222","price":7.36,"currency_code":"USD","in_stock":true},{"title":"TMI3252","offer_id":46985541648619,"sku":"14:4044226#TMI3252","price":8.4,"currency_code":"USD","in_stock":true},{"title":"TMI3244T","offer_id":46985541681387,"sku":"14:351074#TMI3244T","price":11.36,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/1005\/8731\/files\/tmi-series-sot23-6-transistors-ics.webp?v=1761200556"},{"product_id":"5pcs-ne556-dual-timer-ic-in-line-dip-14-bipolar-chip","title":"5PCS 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\u003cspan style=\"color:#333\"\u003eStandard\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eOrigin\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eMainland China\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003ePackage\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eDIP\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eSupply Voltage\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eStandard\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eType\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eLogic ICs\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eis_customized\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eYes\u003c\/span\u003e\u003c\/p\u003e\u003cdiv class=\"detailmodule_html\"\u003e\u003cdiv class=\"detail-desc-decorate-richtext\"\u003e\n\u003cdiv\u003e\n \u003cp\u003e\u003cimg style=\"width:800px\" width=\"800px\" 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CD4541BE Programmable Oscillator Timer IC DIP-14 | CD4541 DIP14 Precision Timing and Oscillation Chip","description":"\u003ch1\u003eSPECIFICATIONS\u003c\/h1\u003e\u003cp\u003e\u003cspan\u003eBrand Name\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eKeszoox\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eChoice\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eyes\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eCondition\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eNew\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eDissipation Power\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eStandard\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eHigh-concerned chemical\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eNone\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eOperating Temperature\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eStandard\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eOrigin\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eMainland China\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003ePackage\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eDIP\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eSupply Voltage\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eStandard\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eType\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eLogic ICs\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eis_customized\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eYes\u003c\/span\u003e\u003c\/p\u003e\u003cdiv class=\"detailmodule_html\"\u003e\u003cdiv class=\"detail-desc-decorate-richtext\"\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003cp\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/Sf103c65209a54763b082f992b03709c09.jpg\" style=\"width:800px;\" data-src=\"D:\\全球交易助手\\Platforms\\AliChoice\\Data\\AliChoice-cn1093225002neeae-6000948202\\Images\\e21485406c794c339b48f9799350df11\\dImgNew\\DImgNew2_rggiqb04.jpg\"\u003e\u003c\/p\u003e\u003c\/div\u003e\n\u003cbr\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/S03860a5adcfe45198b94ffc11020be65j.jpg\" style=\"width:800px;\" data-src=\"https:\/\/ae01.alicdn.com\/kf\/S579d0650a4244a3485c4b2b6ac34c1acI.jpg\"\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/S0e21b31a354d4289bbadaf8a3b46d5b4o.jpg\" style=\"width:800px;\" data-src=\"https:\/\/ae01.alicdn.com\/kf\/Sa3f7062e3c1f4ffca783d77962bae3ffY.jpg\"\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/S4773dcc652a4420b89fc2d6ee201354eA.jpg\" style=\"width:800px;\" data-src=\"https:\/\/ae01.alicdn.com\/kf\/S8f77cefb9333473ea01e39c48fa20777Y.jpg\"\u003e\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/div\u003e","brand":"Keszoox","offers":[{"title":"Default Title","offer_id":46985556525291,"sku":"\u003cnone\u003e","price":11.56,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/1005\/8731\/files\/cd4541be-programmable-oscillator-timer-ic-dip14.webp?v=1761192454"},{"product_id":"ua741-lm324-lm393-lm339-ne555-dip-analog-ic-starter-set-10pcs","title":"UA741 \/ LM324 \/ LM393 \/ LM339 \/ NE555 DIP Analog IC Starter Set – Pack of 10","description":"\u003ch2\u003eUA741 \/ LM324 \/ LM393 \/ LM339 \/ NE555 DIP Analog IC Starter Set – Pack of 10\u003c\/h2\u003e\n\n\u003cp\u003eThis \u003cstrong\u003eanalog IC starter set\u003c\/strong\u003e covers the five most essential general-purpose analog ICs in electronics – the building blocks that every electronics student, hobbyist, and engineer should have on hand. From the original op-amp (UA741) to the world's most popular timer (NE555), these ICs appear in virtually every analog electronics textbook and are the foundation of countless circuit designs. This 10-piece DIP pack is the ideal starter kit for electronics education and breadboard prototyping.\u003c\/p\u003e\n\n\u003ch3\u003eIncluded IC Descriptions\u003c\/h3\u003e\n\n\u003ch4\u003eUA741 (DIP-8) – Single General-Purpose Op-Amp\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eThe original op-amp – 1MHz GBW, ±15V dual supply\u003c\/li\u003e\n  \u003cli\u003eUse: Inverting\/non-inverting amplifier, integrator, differentiator, summing amplifier\u003c\/li\u003e\n  \u003cli\u003eBest for: Electronics education and legacy circuit repair\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eLM324N (DIP-14) – Quad Single-Supply Op-Amp\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e4 op-amps, single supply 3V–32V, input range to GND\u003c\/li\u003e\n  \u003cli\u003eUse: Multi-channel signal conditioning, comparators, active filters, battery circuits\u003c\/li\u003e\n  \u003cli\u003eBest for: Battery-powered analog circuits and sensor amplification\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eLM393N (DIP-8) – Dual Voltage Comparator\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e2 comparators, open-collector output, 2V–36V single supply\u003c\/li\u003e\n  \u003cli\u003eUse: Threshold detection, zero-crossing, window comparator, sensor alarms\u003c\/li\u003e\n  \u003cli\u003eBest for: Any voltage comparison application\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eLM339N (DIP-14) – Quad Voltage Comparator\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e4 comparators, open-collector output, 2V–36V single supply\u003c\/li\u003e\n  \u003cli\u003eQuad version of LM393 – 4 channels in one DIP-14 package\u003c\/li\u003e\n  \u003cli\u003eUse: Multi-channel threshold detection, battery monitoring, motor control\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eNE555 (DIP-8) – Timer IC\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eThe world's most popular IC – astable oscillator and monostable timer\u003c\/li\u003e\n  \u003cli\u003e4.5V–16V supply, 200mA output, 0.1Hz–500kHz frequency range\u003c\/li\u003e\n  \u003cli\u003eUse: LED flashers, PWM, tone generators, delay timers, debounce circuits\u003c\/li\u003e\n  \u003cli\u003eBest for: Any timing, oscillator, or PWM application\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhy These Five ICs?\u003c\/h3\u003e\n\u003cp\u003eThese five ICs cover the fundamental analog functions: \u003cstrong\u003eamplification\u003c\/strong\u003e (UA741, LM324), \u003cstrong\u003ecomparison\u003c\/strong\u003e (LM393, LM339), and \u003cstrong\u003etiming\u003c\/strong\u003e (NE555). Together they can implement virtually any basic analog circuit – from sensor interfaces to oscillators to power control. They appear in every analog electronics textbook and are the first ICs every electronics student should learn.\u003c\/p\u003e\n\n\u003ch3\u003ePackage Contents\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e10 × DIP analog ICs (select variant: UA741, LM324N, LM393N, LM339N, or NE555)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eThe five essential analog ICs – op-amps, comparators, and timer in DIP packages for electronics education, breadboard prototyping, and general-purpose analog circuit design.\u003c\/p\u003e","brand":"Keszoox","offers":[{"title":"5PCS-LM339","offer_id":46991416459499,"sku":"14:4044226#20PCS-LM339","price":7.24,"currency_code":"USD","in_stock":true},{"title":"5PCS-LM393","offer_id":46991416492267,"sku":"14:350852#20PCS-LM393","price":5.2,"currency_code":"USD","in_stock":true},{"title":"5PCS-LM324","offer_id":46991416525035,"sku":"14:201659813#20PCS-LM324","price":7.04,"currency_code":"USD","in_stock":true},{"title":"5PCS-LM358","offer_id":46991416557803,"sku":"14:1202#20PCS-LM358","price":5.24,"currency_code":"USD","in_stock":true},{"title":"5PCS-NE555","offer_id":46991416590571,"sku":"14:351074#20PCS-NE555","price":5.24,"currency_code":"USD","in_stock":true},{"title":"5PCS-UA741CN","offer_id":46991416623339,"sku":"14:10#20PCS-UA741CN","price":7.36,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/1005\/8731\/files\/ua741-lm324-lm393-lm339-ne555-ic.webp?v=1761890915"},{"product_id":"tl494-adjustable-pwm-controller-module-5v-500hz-100khz-250ma","title":"TL494 Adjustable PWM Controller Module 5V 500Hz-100kHz 250mA","description":"\u003ch1\u003eSPECIFICATIONS\u003c\/h1\u003e\u003cp\u003e\u003cspan\u003eApplication\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eComputer\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eBrand Name\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eKeszoox\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eCondition\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eNew\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eDissipation Power\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003e..\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eFunctions\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eElectronic Module\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eHigh-concerned chemical\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eNone\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eOperating Temperature\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003e-40~+80\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eOrigin\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eMainland China\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003ePackage\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eDIY module\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eRange of application\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eSwitch And Sensor For Arduino STM\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eSupply Voltage\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003e..\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eType\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eModule\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eis_customized\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eYes\u003c\/span\u003e\u003c\/p\u003e\u003cdiv class=\"detailmodule_html\"\u003e\u003cdiv class=\"detail-desc-decorate-richtext\"\u003e\u003cdiv\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/Hd8b751857ee04c1594c2d258c82c72e5Y.jpg\" style=\"width:1000px;\" data-src=\"https:\/\/ae01.alicdn.com\/kf\/Hd8b751857ee04c1594c2d258c82c72e5Y.jpg\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/Sf1d370dbdaad460da4e7568301977cecY.jpg\" style=\"width:1000px;\" data-src=\"https:\/\/ae01.alicdn.com\/kf\/Sf1d370dbdaad460da4e7568301977cecY.jpg\"\u003e\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/div\u003e\u003c\/div\u003e\r\n","brand":"Keszoox","offers":[{"title":"10PCS","offer_id":46991418491115,"sku":"14:351074#10PCS","price":50.28,"currency_code":"USD","in_stock":true},{"title":"5PCS","offer_id":46991418523883,"sku":"14:350852#5PCS","price":26.24,"currency_code":"USD","in_stock":true},{"title":"1PCS","offer_id":46991418556651,"sku":"14:1202#1PCS","price":6.24,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/1005\/8731\/files\/tl494-adjustable-pwm-controller-module.webp?v=1761889776"},{"product_id":"sg3525a-sg3525adr-sop-16-pwm-controller-ic-chipset","title":"SG3525A SG3525ADR SOP-16 PWM Controller IC Chipset","description":"\u003ch2\u003eSG3525A \/ SG3525ADR SOP-16 PWM Controller IC — Switch-Mode Power Supply Driver\u003c\/h2\u003e\n\n\u003cp\u003eThe SG3525A is one of the most widely deployed voltage-mode PWM controller ICs in power electronics, originally developed by Silicon General and now produced by multiple manufacturers including Texas Instruments, STMicroelectronics, and ON Semiconductor. Its push-pull complementary output stage directly drives two power switches (N-channel MOSFETs, IGBTs, or NPN BJTs) with programmable dead time — making it the go-to controller for half-bridge, full-bridge, and push-pull SMPS topologies from 100W to multi-kW.\u003c\/p\u003e\n\n\u003cp\u003eThe SG3525ADR is the same device in SOP-16 SMD package, suitable for PCB production. Available in 10-piece or 20-piece packs.\u003c\/p\u003e\n\n\u003ch3\u003eKey Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage:\u003c\/strong\u003e SOP-16 (SMD, 1.27mm pitch, 10mm body width)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSupply Voltage (VCC):\u003c\/strong\u003e 8V – 35V\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUVLO Threshold:\u003c\/strong\u003e 8V turn-on \/ 5.6V turn-off (undervoltage lockout)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReference Output (VREF):\u003c\/strong\u003e 5.1V ±1%, up to 50mA load\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOscillator Frequency:\u003c\/strong\u003e 100Hz – 500kHz (set by external RT and CT)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput Stage:\u003c\/strong\u003e Push-pull totem-pole, 400mA source \/ 400mA sink per output (OUT A and OUT B)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput Duty Cycle:\u003c\/strong\u003e 0–45% per output (90% total, with dead time)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDead Time:\u003c\/strong\u003e Programmable via RD resistor (prevents simultaneous conduction \/ shoot-through)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSoft-Start:\u003c\/strong\u003e Built-in, controlled by external capacitor on SS pin (pin 8)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShutdown:\u003c\/strong\u003e Logic-level SD pin (pin 10, active HIGH) — latching or non-latching depending on circuit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eError Amplifier:\u003c\/strong\u003e Internal transconductance op-amp, access to INV input (pin 1), NI input (pin 2), and COMP output (pin 9)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSync:\u003c\/strong\u003e Oscillator sync input (pin 3) for multi-unit synchronization\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating Temperature:\u003c\/strong\u003e 0°C to +70°C (SG3525A) \/ −40°C to +85°C (SG3525ADR)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 10 or 20 pieces per pack\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSOP-16 Pinout\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePin 1 — INV:\u003c\/strong\u003e Error amplifier inverting input (feedback from output voltage divider)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePin 2 — NI:\u003c\/strong\u003e Error amplifier non-inverting input (reference setpoint)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePin 3 — SYNC:\u003c\/strong\u003e Oscillator synchronization input\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePin 4 — OSC OUT:\u003c\/strong\u003e Oscillator output (sawtooth waveform)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePin 5 — CT:\u003c\/strong\u003e Timing capacitor (sets oscillator frequency with RT)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePin 6 — RT:\u003c\/strong\u003e Timing resistor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePin 7 — RD:\u003c\/strong\u003e Dead time resistor (higher resistance = more dead time)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePin 8 — SS:\u003c\/strong\u003e Soft-start capacitor (larger cap = slower startup ramp)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePin 9 — COMP:\u003c\/strong\u003e Error amplifier output \/ compensation network node\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePin 10 — SD:\u003c\/strong\u003e Shutdown input (HIGH = outputs disabled)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePin 11 — OUT A:\u003c\/strong\u003e Push-pull output A (drives high-side or primary switch A)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePin 12 — GND:\u003c\/strong\u003e Signal and power ground\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePin 13 — VCC:\u003c\/strong\u003e Supply voltage (8–35V DC)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePin 14 — OUT B:\u003c\/strong\u003e Push-pull output B (drives low-side or primary switch B)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePin 15 — VREF:\u003c\/strong\u003e 5.1V precision reference output (bypass with 100nF to GND)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePin 16 — VC:\u003c\/strong\u003e Output stage supply (can be separate from VCC for level shifting)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eOscillator Frequency Design\u003c\/h3\u003e\n\u003cp\u003eThe oscillator frequency is set by RT (pin 6) and CT (pin 5):\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ef ≈ 1 \/ (CT × (0.7 × RT + 3 × RD))\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eTypical starting values for common frequencies:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e20kHz:\u003c\/strong\u003e RT = 22kΩ, CT = 2.2nF, RD = 200Ω\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e50kHz:\u003c\/strong\u003e RT = 10kΩ, CT = 1nF, RD = 100Ω\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e100kHz:\u003c\/strong\u003e RT = 5.6kΩ, CT = 470pF, RD = 100Ω\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eOUT A and OUT B switch alternately at half the oscillator frequency, each with a maximum duty cycle of ~45% (dead time fills the remaining ~10%).\u003c\/p\u003e\n\n\u003ch3\u003eVoltage Feedback Loop\u003c\/h3\u003e\n\u003cp\u003eConnect the output voltage divider (R1\/R2) to the INV input (pin 1). Connect VREF (pin 15) through a resistor divider to the NI input (pin 2) to set the regulation setpoint. The error amplifier output (COMP, pin 9) modulates the PWM duty cycle via the internal comparator — increasing duty cycle when output voltage drops below setpoint, decreasing when above. Add a compensation network (RC) between COMP and INV for loop stability.\u003c\/p\u003e\n\n\u003ch3\u003eSoft-Start Operation\u003c\/h3\u003e\n\u003cp\u003eConnect a capacitor (typically 1–10µF) from SS (pin 8) to GND. At power-up, the internal current source charges this capacitor slowly, ramping the duty cycle from 0% to the steady-state value over a controlled time period — preventing inrush current and transformer saturation during startup.\u003c\/p\u003e\n\n\u003ch3\u003eShutdown and Protection\u003c\/h3\u003e\n\u003cp\u003eDrive SD (pin 10) HIGH to immediately disable both outputs. Use this pin with an overcurrent comparator, OVP circuit, or microcontroller GPIO for fault protection. The SD pin can also be used for pulse-by-pulse current limiting when driven by a fast comparator monitoring primary current.\u003c\/p\u003e\n\n\u003ch3\u003eSG3525A vs. SG3524 vs. TL494\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSG3525A:\u003c\/strong\u003e Push-pull outputs (OUT A and OUT B alternate), built-in dead time, soft-start, UVLO. Best for half-bridge and push-pull topologies.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSG3524:\u003c\/strong\u003e Older predecessor, similar architecture but lower output current (100mA) and no built-in soft-start.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTL494:\u003c\/strong\u003e Similar voltage-mode PWM controller, two outputs, widely used in ATX power supplies. Less dead time control flexibility than SG3525A.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTypical Applications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eHalf-bridge SMPS (offline AC-DC, 100W–2kW)\u003c\/li\u003e\n\u003cli\u003eFull-bridge DC-DC converter (high-power, bidirectional)\u003c\/li\u003e\n\u003cli\u003ePush-pull DC-DC converter (12V→220V inverter driver stage)\u003c\/li\u003e\n\u003cli\u003eUninterruptible power supply (UPS) inverter PWM control\u003c\/li\u003e\n\u003cli\u003eSolar inverter PWM generation stage\u003c\/li\u003e\n\u003cli\u003eBattery charger constant-current \/ constant-voltage PWM controller\u003c\/li\u003e\n\u003cli\u003eElectronic ballast for fluorescent lamps\u003c\/li\u003e\n\u003cli\u003eMotor drive PWM generation (with external gate drivers)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eDesign Notes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAdd 100nF ceramic bypass capacitors on VCC (pin 13) and VREF (pin 15) to GND, placed as close to the IC as possible\u003c\/li\u003e\n\u003cli\u003eThe SG3525A outputs (OUT A\/B) can directly drive small MOSFETs at low frequencies; for higher frequencies or larger MOSFETs, add a dedicated gate driver IC (e.g., IR2104, TC4420) between the SG3525A outputs and the MOSFET gates\u003c\/li\u003e\n\u003cli\u003eKeep the RT\/CT oscillator network away from switching noise sources on the PCB\u003c\/li\u003e\n\u003cli\u003eUse a ground plane and separate analog and power ground returns to minimize noise coupling into the error amplifier\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003ePackage Contents\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e10 or 20 × SG3525A \/ SG3525ADR SOP-16 PWM controller IC (quantity as selected)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Keszoox","offers":[{"title":"20PCS-SG3525A","offer_id":46991426158827,"sku":"14:10#20PCS-SG3525A","price":12.88,"currency_code":"USD","in_stock":true},{"title":"10PCS-SG3525A","offer_id":46991426191595,"sku":"14:350852#10PCS-SG3525A","price":6.68,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/1005\/8731\/files\/sg3525a-sg3525adr-sop16-pwm-ic.webp?v=1761888632"},{"product_id":"tl494cn-tl494c-dip-16-pwm-controller-ic-5pcs","title":"TL494CN \/ TL494C DIP-16 PWM Controller IC — Switching Power Supply (5PCS)","description":"\u003ch2\u003eTL494CN \/ TL494C DIP-16 PWM Controller IC — 5PCS Pack\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003eTL494\u003c\/strong\u003e is a fixed-frequency pulse-width modulation (PWM) control circuit widely used in switching power supply design. Available in DIP-16 package, it features dual error amplifiers, an on-chip oscillator, a dead-time control comparator, and output transistors capable of driving push-pull or single-ended topologies. This 5-piece pack is ideal for prototyping, repair, and lab stock.\u003c\/p\u003e\u003ch3\u003eKey Specifications\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Numbers\u003c\/td\u003e\n\u003ctd\u003eTL494CN, TL494C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackage\u003c\/td\u003e\n\u003ctd\u003eDIP-16\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupply Voltage (Vcc)\u003c\/td\u003e\n\u003ctd\u003e7V – 40V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Current (per transistor)\u003c\/td\u003e\n\u003ctd\u003e200mA (sink\/source)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOscillator Frequency\u003c\/td\u003e\n\u003ctd\u003e1Hz – 300kHz (set by RT\/CT)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReference Voltage\u003c\/td\u003e\n\u003ctd\u003e5V ± 1% internal reference\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDead-Time Control\u003c\/td\u003e\n\u003ctd\u003eAdjustable via DTC pin\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Mode\u003c\/td\u003e\n\u003ctd\u003ePush-pull or single-ended\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e0°C to +70°C (TL494C) \/ -40°C to +85°C (TL494CN)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eWhy Choose TL494?\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e✅ \u003cstrong\u003eIndustry-standard PWM controller\u003c\/strong\u003e — decades of proven reliability in SMPS design\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003eDual error amplifiers\u003c\/strong\u003e — voltage and current mode control in one IC\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003eWide supply range (7–40V)\u003c\/strong\u003e — flexible for various power supply topologies\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003eAdjustable dead time\u003c\/strong\u003e — prevents shoot-through in push-pull stages\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003eDIP-16 package\u003c\/strong\u003e — breadboard and through-hole PCB compatible\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTypical Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eForward and flyback switching power supplies\u003c\/li\u003e\n\u003cli\u003eDC-DC buck\/boost converters\u003c\/li\u003e\n\u003cli\u003eATX power supply repair and modification\u003c\/li\u003e\n\u003cli\u003eMotor speed controllers\u003c\/li\u003e\n\u003cli\u003eBattery charger circuits\u003c\/li\u003e\n\u003cli\u003eInverter and UPS designs\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003ePackage Contents\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e5 × TL494CN or TL494C DIP-16 PWM Controller ICs\u003c\/li\u003e\u003c\/ul\u003e","brand":"Keszoox","offers":[{"title":"Default Title","offer_id":46991428157675,"sku":"\u003cnone\u003e","price":6.92,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/1005\/8731\/files\/tl494cn-tl494c-dip16-pwm-controller-ic.webp?v=1761884484"},{"product_id":"ne555-ding-dong-doorbell-diy-kit-pcb-soldering-practice-5-12v","title":"NE555 Ding-Dong Doorbell DIY Kit — Electronic PCB Soldering Practice, 5–12V","description":"\u003ch2\u003eNE555 Ding-Dong Doorbell DIY Kit — Electronic PCB Soldering Practice\u003c\/h2\u003e\u003cp\u003eThis \u003cstrong\u003eNE555 doorbell DIY kit\u003c\/strong\u003e is a classic electronics learning project built around the iconic \u003cstrong\u003eNE555 timer IC\u003c\/strong\u003e. When the button is pressed, the circuit generates a two-tone \"ding-dong\" sound through the included speaker, demonstrating astable and monostable NE555 oscillator operation. All components and a pre-drilled PCB are included — just solder and enjoy.\u003c\/p\u003e\u003ch3\u003eKey Specifications\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eCore IC\u003c\/td\u003e\n\u003ctd\u003eNE555 Timer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e5V – 12V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSound Output\u003c\/td\u003e\n\u003ctd\u003eDing-dong two-tone (via small speaker)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTrigger\u003c\/td\u003e\n\u003ctd\u003ePush button (momentary)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePCB\u003c\/td\u003e\n\u003ctd\u003ePre-drilled, component-labeled\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAssembly\u003c\/td\u003e\n\u003ctd\u003eDIY soldering required\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eWhat You Learn Building This Kit\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNE555 timer operation\u003c\/strong\u003e — astable and monostable modes in a real circuit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRC timing circuits\u003c\/strong\u003e — how resistors and capacitors set frequency and duration\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThrough-hole soldering\u003c\/strong\u003e — resistors, capacitors, IC socket, transistor, speaker\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCircuit debugging\u003c\/strong\u003e — identify and fix common soldering issues\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhy Choose This NE555 Kit?\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e✅ \u003cstrong\u003eAll components included\u003c\/strong\u003e — PCB, NE555, resistors, capacitors, transistor, speaker, button\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003eLabeled PCB silkscreen\u003c\/strong\u003e — component placement clearly marked, beginner-friendly\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003e5–12V supply range\u003c\/strong\u003e — powered by USB 5V, 9V battery, or 12V adapter\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003eClassic NE555 circuit\u003c\/strong\u003e — foundational electronics knowledge applicable to many projects\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003eSatisfying result\u003c\/strong\u003e — working doorbell sound on first power-up\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTypical Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eElectronics soldering practice for beginners\u003c\/li\u003e\n\u003cli\u003eNE555 timer circuit learning and experimentation\u003c\/li\u003e\n\u003cli\u003eSchool and maker club electronics project\u003c\/li\u003e\n\u003cli\u003eDIY doorbell for workshop or shed\u003c\/li\u003e\n\u003cli\u003eGift for electronics hobbyists and students\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003ePackage Contents\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e1 × NE555 Doorbell DIY Kit (PCB + all components)\u003c\/li\u003e\u003c\/ul\u003e","brand":"Keszoox","offers":[{"title":"Default Title","offer_id":46991433597163,"sku":"\u003cnone\u003e","price":8.48,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/1005\/8731\/files\/ne555-doorbell-diy-kit-pcb-ding-dong.webp?v=1761881943"},{"product_id":"uln2001-3-channel-darlington-transistor-array-sop8-50v-500ma-flyback-diodes-10pack","title":"ULN2001 3-Channel Darlington Transistor Array IC — SOP-8, 50V 500mA, Flyback Diodes (10-Pack)","description":"\u003ch2\u003eULN2001 3-Channel Darlington Transistor Array IC — SOP-8, 50V \/ 500mA, Flyback Diodes (10-Pack)\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003eULN2001\u003c\/strong\u003e is a 3-channel NPN Darlington transistor array in SOP-8 package, designed to drive inductive loads such as relays, stepper motor coils, solenoid valves, and LED arrays directly from TTL or CMOS logic outputs. Built-in flyback diodes on each channel protect the IC from inductive voltage spikes, eliminating the need for external protection diodes. This 10-pack is ideal for prototyping stock and production use.\u003c\/p\u003e\u003ch3\u003eKey Specifications\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eIC\u003c\/td\u003e\n\u003ctd\u003eULN2001 \/ ULN2001A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackage\u003c\/td\u003e\n\u003ctd\u003eSOP-8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChannels\u003c\/td\u003e\n\u003ctd\u003e3 (independent NPN Darlington pairs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Collector Voltage\u003c\/td\u003e\n\u003ctd\u003e50V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Collector Current\u003c\/td\u003e\n\u003ctd\u003e500mA per channel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Compatibility\u003c\/td\u003e\n\u003ctd\u003eTTL and CMOS logic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlyback Diodes\u003c\/td\u003e\n\u003ctd\u003eBuilt-in (one per channel)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVCE Saturation\u003c\/td\u003e\n\u003ctd\u003e~1V (at 350mA)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-40°C to +85°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePack Quantity\u003c\/td\u003e\n\u003ctd\u003e10 pieces\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eULN2001 vs ULN2003 vs ULN2803\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eIC\u003c\/th\u003e\n\u003cth\u003eChannels\u003c\/th\u003e\n\u003cth\u003ePackage\u003c\/th\u003e\n\u003cth\u003eBest For\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eULN2001\u003c\/td\u003e\n\u003ctd\u003e3\u003c\/td\u003e\n\u003ctd\u003eSOP-8\u003c\/td\u003e\n\u003ctd\u003eCompact 3-channel SMD designs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eULN2003\u003c\/td\u003e\n\u003ctd\u003e7\u003c\/td\u003e\n\u003ctd\u003eDIP-16 \/ SOP-16\u003c\/td\u003e\n\u003ctd\u003eStepper motor, 7-segment display\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eULN2803\u003c\/td\u003e\n\u003ctd\u003e8\u003c\/td\u003e\n\u003ctd\u003eDIP-18 \/ SOP-18\u003c\/td\u003e\n\u003ctd\u003eHigh-channel-count relay arrays\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eWhy Choose ULN2001?\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e✅ \u003cstrong\u003eSOP-8 package\u003c\/strong\u003e — compact SMD footprint for space-constrained PCBs\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003eBuilt-in flyback diodes\u003c\/strong\u003e — no external protection diodes needed for relay\/solenoid driving\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003eTTL\/CMOS compatible input\u003c\/strong\u003e — directly driven by Arduino, ESP32, STM32 GPIO\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003e500mA per channel\u003c\/strong\u003e — sufficient for small relays and solenoids\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003e10-pack value\u003c\/strong\u003e — ideal for prototyping and production stock\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTypical Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eRelay driver from Arduino \/ MCU GPIO\u003c\/li\u003e\n\u003cli\u003eStepper motor coil driver (3-phase)\u003c\/li\u003e\n\u003cli\u003eSolenoid valve driver\u003c\/li\u003e\n\u003cli\u003eLED array high-current driver\u003c\/li\u003e\n\u003cli\u003eDC motor driver (low current)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003ePackage Contents\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e10 × ULN2001 SOP-8 Darlington Transistor Array IC\u003c\/li\u003e\u003c\/ul\u003e","brand":"Keszoox","offers":[{"title":"Default Title","offer_id":46991436185835,"sku":"\u003cnone\u003e","price":8.6,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/1005\/8731\/files\/uln2001-sop8-three-channel-relay-driver-ic-chip.webp?v=1761879908"},{"product_id":"fa5518-fa5511-fa5501-fa5696-fa8a00-sop8-pwm-controller-ic-5pcs","title":"FA5518 \/ FA5511 \/ FA5501 \/ FA5696 \/ FA8A00 SOP-8 PWM Controller IC – Pack of 5","description":"\u003ch2\u003eFA5518 \/ FA5511 \/ FA5501 \/ FA5696 \/ FA8A00 SOP-8 PWM Controller IC — 5-Pack\u003c\/h2\u003e\u003cp\u003eThis 5-pack covers the most widely used \u003cstrong\u003eFuji Electric FA-series SOP-8 PWM controller ICs\u003c\/strong\u003e, found in switching power supplies, LCD monitor power boards, laptop chargers, and LED driver circuits. Each IC integrates a current-mode PWM controller with protection features including OVP, OCP, and soft-start, making them the standard replacement IC for SMPS repair and new power supply design.\u003c\/p\u003e\u003ch3\u003eVariant Overview\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003ePart\u003c\/th\u003e\n\u003cth\u003eKey Feature\u003c\/th\u003e\n\u003cth\u003eTypical Use\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFA5518\u003c\/td\u003e\n\u003ctd\u003eGreen-mode PWM, low standby power\u003c\/td\u003e\n\u003ctd\u003eLCD monitor SMPS, charger\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFA5511\u003c\/td\u003e\n\u003ctd\u003eFixed frequency, high efficiency\u003c\/td\u003e\n\u003ctd\u003eLCD TV power board\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFA5501\u003c\/td\u003e\n\u003ctd\u003eBurst mode, ultra-low standby\u003c\/td\u003e\n\u003ctd\u003eStandby power supply\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFA5696\u003c\/td\u003e\n\u003ctd\u003ePFC + PWM combo controller\u003c\/td\u003e\n\u003ctd\u003eHigh-power SMPS with PFC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFA8A00\u003c\/td\u003e\n\u003ctd\u003eEnhanced green mode, OVP\/OCP\u003c\/td\u003e\n\u003ctd\u003eAdapter and charger SMPS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eCommon Specifications\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackage\u003c\/td\u003e\n\u003ctd\u003eSOP-8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTopology\u003c\/td\u003e\n\u003ctd\u003eCurrent-mode PWM flyback controller\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtections\u003c\/td\u003e\n\u003ctd\u003eOVP, OCP, soft-start, thermal shutdown\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Mode\u003c\/td\u003e\n\u003ctd\u003eGreen mode \/ burst mode (standby)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePack Quantity\u003c\/td\u003e\n\u003ctd\u003e5 pieces\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eWhy Choose FA-Series PWM Controllers?\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e✅ \u003cstrong\u003eIndustry-standard SMPS ICs\u003c\/strong\u003e — used in major monitor, TV, and charger brands\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003eGreen mode operation\u003c\/strong\u003e — reduces standby power consumption\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003eSOP-8 package\u003c\/strong\u003e — hand-solderable for repair work\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003eFull protection suite\u003c\/strong\u003e — OVP, OCP, soft-start, thermal shutdown\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003e5-pack value\u003c\/strong\u003e — stock for multiple repair jobs\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTypical Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eLCD monitor and TV switching power supply repair\u003c\/li\u003e\n\u003cli\u003eLaptop charger and adapter SMPS repair\u003c\/li\u003e\n\u003cli\u003eLED driver power board IC replacement\u003c\/li\u003e\n\u003cli\u003eNew flyback SMPS PCB design\u003c\/li\u003e\n\u003cli\u003eHigh-power SMPS with PFC (FA5696)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003ePackage Contents\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e5 × FA-Series SOP-8 PWM Controller IC (variant as selected)\u003c\/li\u003e\u003c\/ul\u003e","brand":"Keszoox","offers":[{"title":"FA8A00","offer_id":46991439429867,"sku":"14:201659813#FA8A00","price":47.12,"currency_code":"USD","in_stock":true},{"title":"FA5501","offer_id":46991439462635,"sku":"14:351074#FA5501","price":9.64,"currency_code":"USD","in_stock":true},{"title":"FA5696","offer_id":46991439495403,"sku":"14:4044226#FA5696","price":8.64,"currency_code":"USD","in_stock":true},{"title":"FA5518","offer_id":46991439528171,"sku":"14:1202#FA5518","price":9.64,"currency_code":"USD","in_stock":true},{"title":"FA5511","offer_id":46991439560939,"sku":"14:350852#FA5511","price":9.92,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/1005\/8731\/files\/fa5518-fa5511-fa5501-fa5696-fa8a00-sop8-power-management-ic-chip-set.webp?v=1761878761"},{"product_id":"apw7142-synchronous-buck-pwm-controller-sop8-4-5-25v-0-8v-ref-1mhz-5pack","title":"APW7142 Synchronous Buck PWM Controller IC — SOP-8, 4.5–25V, 0.8V Ref, 1MHz (5-Pack)","description":"\u003ch2\u003eAPW7142 Synchronous Buck PWM Controller IC — SOP-8, 4.5–25V, 0.8V Ref (5-Pack)\u003c\/h2\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eAPW7142\u003c\/strong\u003e from Anpec Electronics is a voltage-mode synchronous buck PWM controller IC in SOP-8 SMD package — driving external N-channel high-side and low-side MOSFETs for high-efficiency synchronous step-down conversion. The 0.8V feedback reference allows low output voltages for modern processor and LCD panel power rails. Adjustable switching frequency (100kHz–1MHz via external resistor) and built-in adaptive deadtime control prevent shoot-through without fixed deadtime losses. Widely used in LCD monitor and TV power management. Pack of 5.\u003c\/p\u003e\n\n\u003ch3\u003eElectrical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e APW7142\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage:\u003c\/strong\u003e SOP-8 (SMD, 1.27mm pitch)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInput Voltage:\u003c\/strong\u003e 4.5V – 25V\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutput Voltage:\u003c\/strong\u003e Adjustable (0.8V feedback reference)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSwitching Frequency:\u003c\/strong\u003e 100kHz – 1MHz (set by external resistor)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGate Drive:\u003c\/strong\u003e External N-channel MOSFETs (high-side + low-side)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDeadtime:\u003c\/strong\u003e Adaptive (built-in, prevents shoot-through)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEnable:\u003c\/strong\u003e Logic-level enable\/shutdown pin\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSoft-Start:\u003c\/strong\u003e Built-in\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProtection:\u003c\/strong\u003e OCP, OVP, thermal shutdown, UVLO\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOperating Temperature:\u003c\/strong\u003e -40°C to +85°C\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePack Quantity:\u003c\/strong\u003e 5 ICs\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTypical Applications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eLCD monitor and TV panel power management\u003c\/li\u003e\n  \u003cli\u003eProcessor core voltage (VCore) regulator\u003c\/li\u003e\n  \u003cli\u003ePoint-of-load synchronous buck converter\u003c\/li\u003e\n  \u003cli\u003eIndustrial DC-DC converter design\u003c\/li\u003e\n  \u003cli\u003ePower supply repair replacement stock\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eAPW7142 synchronous buck PWM controller, 5-pack — SOP-8, 4.5–25V, 0.8V ref, adaptive deadtime for LCD power management and synchronous DC-DC converter design.\u003c\/p\u003e","brand":"Keszoox","offers":[{"title":"Default Title","offer_id":46991441297643,"sku":"\u003cnone\u003e","price":7.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/1005\/8731\/files\/apw7142-sop8-smd-lcd-power-ic.webp?v=1761807606"},{"product_id":"tea1532a-tea1532c-tea1733-sop8-lcd-power-supply-pwm-controller-ic-5pack","title":"TEA1532A \/ TEA1532C \/ TEA1733 SOP-8 LCD Power Supply PWM Controller IC — 5-Pack","description":"\u003ch2\u003eTEA1532A \/ TEA1532C \/ TEA1733 SOP-8 LCD Power Supply PWM Controller IC — 5-Pack\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003eTEA1532A, TEA1532C, and TEA1733\u003c\/strong\u003e are SOP-8 PWM controller ICs from NXP Semiconductors, widely used in LCD monitor and TV switching power supply boards. Each IC integrates a current-mode flyback PWM controller with green-mode operation, OVP, OCP, and soft-start — making them the standard replacement IC for LCD power board repair. This 5-pack is ideal for repair technicians and electronics engineers.\u003c\/p\u003e\u003ch3\u003eVariant Overview\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003ePart\u003c\/th\u003e\n\u003cth\u003eKey Feature\u003c\/th\u003e\n\u003cth\u003eTypical Use\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eTEA1532A\u003c\/td\u003e\n\u003ctd\u003eGreen-mode PWM, low standby power\u003c\/td\u003e\n\u003ctd\u003eLCD monitor SMPS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTEA1532C\u003c\/td\u003e\n\u003ctd\u003eEnhanced OVP, improved efficiency\u003c\/td\u003e\n\u003ctd\u003eLCD TV power board\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTEA1733\u003c\/td\u003e\n\u003ctd\u003eIntegrated PFC + PWM controller\u003c\/td\u003e\n\u003ctd\u003eHigh-power LCD SMPS with PFC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eCommon Specifications\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackage\u003c\/td\u003e\n\u003ctd\u003eSOP-8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTopology\u003c\/td\u003e\n\u003ctd\u003eCurrent-mode flyback PWM controller\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Mode\u003c\/td\u003e\n\u003ctd\u003eGreen mode (burst mode at light load)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtections\u003c\/td\u003e\n\u003ctd\u003eOVP, OCP, soft-start, thermal shutdown\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePack Quantity\u003c\/td\u003e\n\u003ctd\u003e5 pieces\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eWhy Choose TEA1532\/TEA1733?\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e✅ \u003cstrong\u003eNXP quality\u003c\/strong\u003e — genuine NXP ICs for reliable repair results\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003eGreen mode operation\u003c\/strong\u003e — reduces standby power below 1W\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003eSOP-8 package\u003c\/strong\u003e — hand-solderable for repair work\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003eFull protection suite\u003c\/strong\u003e — OVP, OCP, soft-start, thermal shutdown\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003e5-pack value\u003c\/strong\u003e — stock for multiple repair jobs\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTypical Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eLCD monitor switching power supply repair\u003c\/li\u003e\n\u003cli\u003eLCD TV power board IC replacement\u003c\/li\u003e\n\u003cli\u003eFlyback SMPS PWM controller design\u003c\/li\u003e\n\u003cli\u003eHigh-power LCD SMPS with PFC (TEA1733)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003ePackage Contents\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e5 × TEA1532A \/ TEA1532C \/ TEA1733 SOP-8 PWM Controller IC (variant as selected)\u003c\/li\u003e\u003c\/ul\u003e","brand":"Keszoox","offers":[{"title":"TEA1532A","offer_id":46991447785707,"sku":"14:1202#TEA1532A","price":6.92,"currency_code":"USD","in_stock":true},{"title":"TEA1733","offer_id":46991447818475,"sku":"14:350852#TEA1733","price":12.48,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/1005\/8731\/files\/tea1532a-tea1532c-tea1733-sop-8-lcd-power-chip.webp?v=1761804725"},{"product_id":"ucc3895dw-ucc3895-phase-shift-pwm-controller-sop20-zvs-full-bridge-3pack","title":"UCC3895DW \/ UCC3895 Phase-Shift PWM Controller IC — SOP-20, ZVS Full-Bridge (3-Pack)","description":"\u003ch2\u003eUCC3895DW \/ UCC3895 Phase-Shift PWM Controller IC — SOP-20, ZVS Full-Bridge (3-Pack)\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003eUCC3895DW \/ UCC3895\u003c\/strong\u003e is a phase-shift PWM controller IC from Texas Instruments (formerly Unitrode), designed specifically for \u003cstrong\u003ezero-voltage switching (ZVS) full-bridge DC-DC converter\u003c\/strong\u003e topologies. By controlling the phase shift between the two half-bridge legs, it achieves ZVS turn-on of all four power switches — eliminating switching losses and enabling high-efficiency operation at high frequencies. It is the standard controller IC for high-power telecom power supplies, server PSUs, and industrial DC-DC converters. This 3-pack is ideal for design engineers and repair technicians.\u003c\/p\u003e\u003ch3\u003eKey Electrical Specifications\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eSymbol\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackage\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003ctd\u003eSOP-20 (SOIC-20)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupply Voltage\u003c\/td\u003e\n\u003ctd\u003eVCC\u003c\/td\u003e\n\u003ctd\u003e10V – 20V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOscillator Frequency\u003c\/td\u003e\n\u003ctd\u003efOSC\u003c\/td\u003e\n\u003ctd\u003eUp to 1MHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTopology\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003ctd\u003ePhase-shift ZVS full-bridge\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGate Drive Outputs\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003ctd\u003e4 (OUTA, OUTB, OUTC, OUTD)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGate Drive Current\u003c\/td\u003e\n\u003ctd\u003eIOUT\u003c\/td\u003e\n\u003ctd\u003e±1A peak\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSoft-Start\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003ctd\u003eYes (programmable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDead-Time Control\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003ctd\u003eYes (adaptive)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtections\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003ctd\u003eOCP, UVLO, soft-start\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003eTopr\u003c\/td\u003e\n\u003ctd\u003e-40°C to +85°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePack Quantity\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003ctd\u003e3 pieces\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eUCC3895 vs UC3875 vs UCC28950 — ZVS Controller Comparison\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eUCC3895\u003c\/th\u003e\n\u003cth\u003eUC3875\u003c\/th\u003e\n\u003cth\u003eUCC28950\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eTopology\u003c\/td\u003e\n\u003ctd\u003eZVS Full-Bridge\u003c\/td\u003e\n\u003ctd\u003eZVS Full-Bridge\u003c\/td\u003e\n\u003ctd\u003eZVS Full-Bridge + SR\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackage\u003c\/td\u003e\n\u003ctd\u003eSOP-20\u003c\/td\u003e\n\u003ctd\u003eDIP-20 \/ SOP-20\u003c\/td\u003e\n\u003ctd\u003eSOP-24\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSync Rectifier\u003c\/td\u003e\n\u003ctd\u003e❌ No\u003c\/td\u003e\n\u003ctd\u003e❌ No\u003c\/td\u003e\n\u003ctd\u003e✅ Yes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Frequency\u003c\/td\u003e\n\u003ctd\u003e1MHz\u003c\/td\u003e\n\u003ctd\u003e1MHz\u003c\/td\u003e\n\u003ctd\u003e1MHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBest For\u003c\/td\u003e\n\u003ctd\u003eHigh-power SMPS, server PSU\u003c\/td\u003e\n\u003ctd\u003eLegacy designs\u003c\/td\u003e\n\u003ctd\u003eHigh-efficiency with SR\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eWhy Choose UCC3895?\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e✅ \u003cstrong\u003eZVS full-bridge control\u003c\/strong\u003e — eliminates switching losses for high-efficiency operation\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003eUp to 1MHz switching\u003c\/strong\u003e — compact magnetics and capacitors\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003e±1A gate drive\u003c\/strong\u003e — directly drives power MOSFETs without external gate drivers\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003eAdaptive dead-time\u003c\/strong\u003e — optimizes ZVS across load range\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003eSOP-20 package\u003c\/strong\u003e — compact SMD footprint for modern PCB designs\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003e3-pack value\u003c\/strong\u003e — design prototyping and repair stock\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTypical Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eTelecom rectifier and power supply (48V output)\u003c\/li\u003e\n\u003cli\u003eServer and data center PSU (12V \/ 48V)\u003c\/li\u003e\n\u003cli\u003eIndustrial DC-DC converter (high power)\u003c\/li\u003e\n\u003cli\u003eEV battery charger power stage\u003c\/li\u003e\n\u003cli\u003eWelding machine inverter controller\u003c\/li\u003e\n\u003cli\u003eHigh-frequency DC-DC converter design\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003ePackage Contents\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e3 × UCC3895DW \/ UCC3895 SOP-20 Phase-Shift PWM Controller IC\u003c\/li\u003e\u003c\/ul\u003e","brand":"Keszoox","offers":[{"title":"Default Title","offer_id":46991450472683,"sku":"\u003cnone\u003e","price":9.64,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/1005\/8731\/files\/ucc3895dw-ucc3895-sop-20-switching-regulator-controller-ic.webp?v=1761801283"},{"product_id":"sd6834-offline-flyback-pwm-controller-dip8-hv-startup-ocp-ovp-otp-5pack","title":"SD6834 Offline Flyback PWM Controller IC — DIP-8, HV Startup, OCP\/OVP\/OTP (5-Pack)","description":"\u003ch2\u003eSD6834 Offline Flyback PWM Controller — DIP-8, HV Startup, OCP\/OVP\/OTP\u003c\/h2\u003e\u003cp\u003eThe SD6834 is a current-mode PWM controller IC designed for offline flyback switching power supplies. Featuring a built-in high-voltage startup circuit, it eliminates the need for an external startup resistor, reducing component count and improving efficiency. Comprehensive protection functions including OCP, OVP, OTP, and burst mode make it suitable for charger, adapter, and SMPS repair applications.\u003c\/p\u003e\u003ch3\u003eKey Specifications\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackage\u003c\/td\u003e\n\u003ctd\u003eDIP-8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTopology\u003c\/td\u003e\n\u003ctd\u003eOffline flyback (current mode)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHV Startup\u003c\/td\u003e\n\u003ctd\u003eBuilt-in (no external resistor needed)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSwitching Frequency\u003c\/td\u003e\n\u003ctd\u003e65kHz (typical)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSoft-Start\u003c\/td\u003e\n\u003ctd\u003eYes (internal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection\u003c\/td\u003e\n\u003ctd\u003eOCP, OVP, OTP, burst mode\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupply Voltage (VCC)\u003c\/td\u003e\n\u003ctd\u003e8–30V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuantity\u003c\/td\u003e\n\u003ctd\u003e5 pieces\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eWhy Choose SD6834?\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuilt-in HV startup\u003c\/strong\u003e — no external startup resistor, fewer components\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull protection suite\u003c\/strong\u003e — OCP\/OVP\/OTP prevents damage under fault conditions\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBurst mode\u003c\/strong\u003e — improves light-load efficiency for charger standby compliance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDIP-8 package\u003c\/strong\u003e — easy to prototype and replace in existing SMPS boards\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e5-pack value\u003c\/strong\u003e — ideal for repair stock and prototyping\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTypical Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eOffline flyback SMPS (5V\/12V\/24V adapters)\u003c\/li\u003e\n\u003cli\u003eUSB charger and phone charger repair\u003c\/li\u003e\n\u003cli\u003eLED driver power supply\u003c\/li\u003e\n\u003cli\u003eIndustrial switching power supply\u003c\/li\u003e\n\u003cli\u003eSet-top box and router power supply repair\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003ePackage Contents\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e5× SD6834 Flyback PWM Controller IC (DIP-8)\u003c\/li\u003e\u003c\/ul\u003e","brand":"Keszoox","offers":[{"title":"Default Title","offer_id":46991456043243,"sku":"\u003cnone\u003e","price":6.88,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/1005\/8731\/files\/sd6834-dip-8-voltage-regulator-power-management-ic.webp?v=1761800431"},{"product_id":"ne555dr-sa555dr-precision-timer-ic-sop8-smd-20pack","title":"NE555DR \/ SA555DR Precision Timer IC — SOP-8 SMD, 2–15V, 200mA (20-Pack)","description":"\u003ch2\u003eNE555DR \/ SA555DR Precision Timer IC — SOP-8 SMD, 2–15V (20-Pack)\u003c\/h2\u003e\u003cp\u003eThe NE555DR and SA555DR are the SOP-8 SMD versions of the legendary NE555 precision timer IC. Functionally identical to the classic DIP-8 NE555, they operate from 2V to 15V, source\/sink up to 200mA, and support astable (oscillator), monostable (one-shot), and bistable (flip-flop) configurations. The SOP-8 package makes them ideal for compact PCB designs where through-hole DIP components are not suitable.\u003c\/p\u003e\u003ch3\u003eKey Specifications\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Numbers\u003c\/td\u003e\n\u003ctd\u003eNE555DR, SA555DR, NE555DT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackage\u003c\/td\u003e\n\u003ctd\u003eSOP-8 (SMD)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupply Voltage\u003c\/td\u003e\n\u003ctd\u003e2V – 15V (NE555DR: 4.5–15V; SA555DR: 2–15V)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Current\u003c\/td\u003e\n\u003ctd\u003e200mA source\/sink\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTiming Accuracy\u003c\/td\u003e\n\u003ctd\u003e±1% (with stable R\/C components)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Oscillation Frequency\u003c\/td\u003e\n\u003ctd\u003e~500kHz (astable mode)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e0°C to +70°C (NE555DR) \/ -40°C to +85°C (SA555DR)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuantity\u003c\/td\u003e\n\u003ctd\u003e20 pieces\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eWhy Choose NE555DR \/ SA555DR?\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSOP-8 SMD package\u003c\/strong\u003e — compact footprint for modern PCB designs, replaces DIP NE555 in surface-mount layouts\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e200mA output drive\u003c\/strong\u003e — directly drives LEDs, small relays, and transistor bases without a buffer\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide voltage range\u003c\/strong\u003e — SA555DR works from 2V (battery-powered) to 15V (industrial supply)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePin-compatible with DIP NE555\u003c\/strong\u003e — same circuit topology, just adapt PCB footprint\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e20-pack value\u003c\/strong\u003e — sufficient for lab stock, multiple projects, and repair work\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCompatible With \/ Common Use Cases\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePWM generation\u003c\/strong\u003e: Astable mode with variable resistor for motor speed control and LED dimming\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDebounce circuit\u003c\/strong\u003e: Monostable mode to clean up noisy button signals for Arduino inputs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTone generator\u003c\/strong\u003e: Astable mode driving a piezo buzzer for alarm and notification circuits\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMissing pulse detector\u003c\/strong\u003e: Monostable mode to detect signal interruptions in safety circuits\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage-controlled oscillator (VCO)\u003c\/strong\u003e: Control pin modulation for basic FM\/AM signal generation\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eQ: What is the difference between NE555DR and SA555DR?\u003c\/strong\u003e\u003cbr\u003eA: Both are SOP-8 SMD 555 timers. The NE555DR operates from 4.5–15V and is rated 0°C to +70°C (commercial grade). The SA555DR operates from 2–15V and is rated -40°C to +85°C (industrial\/automotive grade). For battery-powered or outdoor applications, prefer the SA555DR.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Can I use NE555DR as a direct replacement for the DIP-8 NE555?\u003c\/strong\u003e\u003cbr\u003eA: Electrically yes — same pinout and function. You need to adapt the PCB footprint from DIP-8 (2.54mm pitch) to SOP-8 (1.27mm pitch). Use a DIP-to-SOP adapter board for breadboard prototyping.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: What is the maximum PWM frequency I can generate with the NE555?\u003c\/strong\u003e\u003cbr\u003eA: In astable mode, the NE555 can oscillate up to approximately 500kHz with small R\/C values. For higher-frequency PWM (above 100kHz), consider a dedicated PWM IC like the SG3525 or a microcontroller timer output instead.\u003c\/p\u003e\u003ch3\u003ePackage Contents\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e20× NE555DR \/ SA555DR Precision Timer IC (SOP-8 SMD)\u003c\/li\u003e\u003c\/ul\u003e","brand":"Keszoox","offers":[{"title":"Default Title","offer_id":46991456534763,"sku":"\u003cnone\u003e","price":6.28,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/1005\/8731\/files\/ne555dr-sa555dr-ne555dt-sop-8-precision-timer-ic.webp?v=1761797107"},{"product_id":"viper12a-viper12as-off-line-smps-primary-ic-sop8-730v-induction-cooker-5pack","title":"VIPER12A \/ VIPER12AS Off-Line SMPS Primary IC — SOP-8, 730V, Induction Cooker (5-Pack)","description":"\u003ch2\u003eVIPER12A \/ VIPER12AS Off-Line SMPS Primary IC — SOP-8, 730V, 12W (5-Pack)\u003c\/h2\u003e\u003cp\u003eThe VIPER12A and VIPER12AS are off-line flyback SMPS primary ICs from STMicroelectronics, integrating a PWM controller and a 730V avalanche-rated power MOSFET in a single SOP-8 package. Designed for low-power offline switching power supplies up to 12W, they are widely used in induction cooker auxiliary power supplies, USB chargers, LED drivers, and standby power circuits. The VIPER12AS adds a soft-start function for reduced inrush current.\u003c\/p\u003e\u003ch3\u003eKey Specifications\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackage\u003c\/td\u003e\n\u003ctd\u003eSOP-8 (SMD)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIntegrated MOSFET\u003c\/td\u003e\n\u003ctd\u003e730V avalanche-rated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Output Power\u003c\/td\u003e\n\u003ctd\u003e12W (continuous, open-frame)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSwitching Frequency\u003c\/td\u003e\n\u003ctd\u003e60kHz (fixed)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStartup Current\u003c\/td\u003e\n\u003ctd\u003e25μA (ultra-low)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Mode\u003c\/td\u003e\n\u003ctd\u003eCurrent-mode PWM + burst mode at light load\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection\u003c\/td\u003e\n\u003ctd\u003eOCP, OVP, OTP, auto-restart\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVCC Range\u003c\/td\u003e\n\u003ctd\u003e9–38V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuantity\u003c\/td\u003e\n\u003ctd\u003e5 pieces\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eVIPER12A vs VIPER12AS\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eVIPER12A\u003c\/th\u003e\n\u003cth\u003eVIPER12AS\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSoft-Start\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003ctd\u003eYes (internal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInrush Current\u003c\/td\u003e\n\u003ctd\u003eStandard\u003c\/td\u003e\n\u003ctd\u003eReduced\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBest For\u003c\/td\u003e\n\u003ctd\u003eStandard charger\/adapter repair\u003c\/td\u003e\n\u003ctd\u003eInduction cooker, sensitive loads\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eWhy Choose VIPER12A \/ VIPER12AS?\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegrated 730V MOSFET\u003c\/strong\u003e — no external power transistor needed, reduces BOM and PCB area\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e25μA startup current\u003c\/strong\u003e — ultra-low standby power for energy efficiency compliance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBurst mode at light load\u003c\/strong\u003e — improves efficiency under no-load and standby conditions\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull protection suite\u003c\/strong\u003e — OCP\/OVP\/OTP with auto-restart prevents damage under fault conditions\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSTMicroelectronics\u003c\/strong\u003e — industry-standard part with comprehensive application notes (AN2450, AN2458)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCompatible With \/ Common Use Cases\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eInduction cooker auxiliary PSU\u003c\/strong\u003e: 5V\/12V standby supply for control board (most common repair use)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUSB charger \/ phone adapter\u003c\/strong\u003e: 5V\/2A offline flyback design\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLED driver power supply\u003c\/strong\u003e: Isolated constant-voltage LED supply\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndustrial standby supply\u003c\/strong\u003e: 5V\/12V auxiliary rail for PLC and industrial controllers\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eQ: What is the difference between VIPER12A and VIPER22A?\u003c\/strong\u003e\u003cbr\u003eA: Both are off-line flyback ICs with integrated 730V MOSFET. VIPER12A is rated for up to 12W output; VIPER22A supports up to 22W. Use VIPER22A for higher-power chargers and adapters above 12W.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Can I use VIPER12AS as a direct replacement for VIPER12A?\u003c\/strong\u003e\u003cbr\u003eA: Yes — VIPER12AS is pin-compatible with VIPER12A and adds internal soft-start. It is a drop-in upgrade that reduces inrush current stress on the transformer and output capacitors.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: What reference design should I follow for an induction cooker repair?\u003c\/strong\u003e\u003cbr\u003eA: Refer to STMicroelectronics Application Note AN2450 (“VIPERx2A family design guidelines”) and AN2458 for the induction cooker auxiliary supply reference design. The typical circuit uses VIPER12A with a flyback transformer, TL431 feedback, and PC817 optocoupler.\u003c\/p\u003e\u003ch3\u003ePackage Contents\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e5× VIPER12A \/ VIPER12AS Off-Line SMPS Primary IC (SOP-8)\u003c\/li\u003e\u003c\/ul\u003e","brand":"Keszoox","offers":[{"title":"Default Title","offer_id":46991457321195,"sku":"\u003cnone\u003e","price":6.76,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/1005\/8731\/files\/viper12a-viper12as-sop-8-induction-cooker-power-ic.webp?v=1761796472"},{"product_id":"fr9618-fr9618a-sop8-lcd-power-management-ic-5pcs","title":"FR9618 \/ FR9618A SOP-8 LCD Power Management IC – Pack of 5","description":"\u003ch2\u003eFR9618 \/ FR9618A SOP-8 LCD Power Management IC — Display SMPS Controller (5-Pack)\u003c\/h2\u003e\u003cp\u003eThe FR9618 and FR9618A are SOP-8 power management ICs specifically designed for LCD monitor and LCD TV power boards. They integrate a PWM controller for the display SMPS stage and backlight power sequencing, making them the standard replacement IC for failed power management sections in LCD monitor repair. The FR9618A is an improved version with enhanced protection features.\u003c\/p\u003e\u003ch3\u003eKey Specifications\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackage\u003c\/td\u003e\n\u003ctd\u003eSOP-8 (SMD)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFunction\u003c\/td\u003e\n\u003ctd\u003eLCD power management \/ SMPS PWM controller\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eLCD monitor and TV power board\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection\u003c\/td\u003e\n\u003ctd\u003eOVP, OCP, soft-start, auto-restart\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuantity\u003c\/td\u003e\n\u003ctd\u003e5 pieces\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eFR9618 vs FR9618A\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eFR9618\u003c\/th\u003e\n\u003cth\u003eFR9618A\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection\u003c\/td\u003e\n\u003ctd\u003eStandard OVP\/OCP\u003c\/td\u003e\n\u003ctd\u003eEnhanced OVP + improved OCP response\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSoft-Start\u003c\/td\u003e\n\u003ctd\u003eBasic\u003c\/td\u003e\n\u003ctd\u003eImproved (reduced inrush)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReplacement\u003c\/td\u003e\n\u003ctd\u003eOriginal version\u003c\/td\u003e\n\u003ctd\u003eDrop-in upgrade for FR9618\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eWhy Choose FR9618 \/ FR9618A?\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLCD-specific design\u003c\/strong\u003e — optimized for the power sequencing requirements of LCD monitor and TV panels\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFR9618A is a drop-in upgrade\u003c\/strong\u003e — pin-compatible with FR9618, improved protection reduces repeat failures\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSOP-8 package\u003c\/strong\u003e — direct replacement on existing LCD power board footprints\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull protection suite\u003c\/strong\u003e — OVP\/OCP\/soft-start\/auto-restart prevents damage under fault conditions\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e5-pack value\u003c\/strong\u003e — sufficient for multiple LCD repair jobs\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCompatible With \/ Common Repair Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLCD monitors\u003c\/strong\u003e: 17–24 inch LCD monitors with failed power management stage (Samsung, LG, Philips, AOC)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLCD TV power boards\u003c\/strong\u003e: 32–42 inch LCD TV SMPS power board repair\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMonitor no-power fault\u003c\/strong\u003e: Common symptom when FR9618 fails — monitor powers on briefly then shuts off, or no power at all\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBacklight flicker repair\u003c\/strong\u003e: Unstable power management causing backlight instability\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eQ: What symptoms indicate a failed FR9618 on an LCD monitor power board?\u003c\/strong\u003e\u003cbr\u003eA: The most common symptoms are: (1) monitor powers on for 1–3 seconds then shuts off, (2) no power at all with correct input voltage present, (3) backlight flickers or fails to start. Always check electrolytic capacitors on the power board first — bulging or leaking caps are a more common cause than IC failure.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Can I use FR9618A as a direct replacement for FR9618?\u003c\/strong\u003e\u003cbr\u003eA: Yes — FR9618A is pin-compatible and electrically compatible with FR9618. It is the recommended upgrade as it has improved protection characteristics that reduce the likelihood of repeat failure.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: What other components should I replace when repairing an LCD power board?\u003c\/strong\u003e\u003cbr\u003eA: When replacing FR9618\/FR9618A, also inspect and replace: (1) all electrolytic capacitors on the primary and secondary side (common failure point), (2) the power MOSFET if shorted, (3) the optocoupler (PC817) in the feedback loop. Replacing only the IC without checking these often results in the new IC failing again.\u003c\/p\u003e\u003ch3\u003ePackage Contents\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e5× FR9618 \/ FR9618A LCD Power Management IC (SOP-8) — variant as selected\u003c\/li\u003e\u003c\/ul\u003e","brand":"Keszoox","offers":[{"title":"Default Title","offer_id":46991457747179,"sku":"\u003cnone\u003e","price":7.48,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/1005\/8731\/files\/fr9618-fr9618a-sop-8-lcd-power-ic.webp?v=1761795988"},{"product_id":"uc3845an-uc3845bn-uc3843an-uc3842-current-mode-pwm-controller-dip8-5pack","title":"UC3845AN \/ UC3845BN \/ UC3843AN \/ UC3842 Current-Mode PWM Controller — DIP-8 (5-Pack)","description":"\u003ch2\u003eUC3845AN \/ UC3845BN \/ UC3843AN \/ UC3842 Current-Mode PWM Controller — DIP-8 (5-Pack)\u003c\/h2\u003e\u003cp\u003eThe UC384x series are industry-standard current-mode PWM controller ICs in DIP-8 packages, widely used in flyback, forward, and boost switching power supply designs. They integrate an oscillator, error amplifier, current-sense comparator, and gate driver in a single package, providing all the control functions needed for a complete SMPS. The UC3842\/UC3843\/UC3845 variants differ in startup voltage and maximum duty cycle, making them suitable for different SMPS topologies and input voltage ranges.\u003c\/p\u003e\u003ch3\u003eVariant Comparison\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003cth\u003eStartup Voltage\u003c\/th\u003e\n\u003cth\u003eMax Duty Cycle\u003c\/th\u003e\n\u003cth\u003eBest For\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUC3842 \/ UC3842A\u003c\/td\u003e\n\u003ctd\u003e16V (UVLO on: 16V, off: 10V)\u003c\/td\u003e\n\u003ctd\u003e100%\u003c\/td\u003e\n\u003ctd\u003eContinuous-mode flyback, forward converter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUC3843 \/ UC3843AN\u003c\/td\u003e\n\u003ctd\u003e8.5V (UVLO on: 8.5V, off: 7.6V)\u003c\/td\u003e\n\u003ctd\u003e100%\u003c\/td\u003e\n\u003ctd\u003eLow-voltage startup SMPS, battery-powered\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUC3845 \/ UC3845AN \/ UC3845BN\u003c\/td\u003e\n\u003ctd\u003e16V (UVLO on: 16V, off: 10V)\u003c\/td\u003e\n\u003ctd\u003e50%\u003c\/td\u003e\n\u003ctd\u003ePush-pull, half-bridge, two-switch forward\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eKey Specifications (All Variants)\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackage\u003c\/td\u003e\n\u003ctd\u003eDIP-8 (through-hole)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOscillator Frequency\u003c\/td\u003e\n\u003ctd\u003eUp to 500kHz (external R\/C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGate Drive Output\u003c\/td\u003e\n\u003ctd\u003e1A peak source\/sink\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReference Voltage\u003c\/td\u003e\n\u003ctd\u003e5.0V (±1%)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eError Amplifier GBW\u003c\/td\u003e\n\u003ctd\u003e1MHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent Sense Input\u003c\/td\u003e\n\u003ctd\u003e1V threshold (cycle-by-cycle OCP)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e0°C to +70°C (UC38xx) \/ -40°C to +85°C (UC28xx)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuantity\u003c\/td\u003e\n\u003ctd\u003e5 pieces\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eWhy Choose UC384x Series?\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCycle-by-cycle current limiting\u003c\/strong\u003e — instantaneous overcurrent protection prevents transformer saturation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1A gate drive\u003c\/strong\u003e — directly drives power MOSFETs up to ~100nC gate charge without external buffer\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e500kHz max frequency\u003c\/strong\u003e — allows compact transformer and filter designs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e5V precision reference\u003c\/strong\u003e — stable reference for feedback network design\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndustry-standard pinout\u003c\/strong\u003e — compatible with UC2842\/UC2843\/UC2845 (industrial grade) and KA3842\/KA3843 (Samsung equivalents)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCompatible With \/ Common Use Cases\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlyback SMPS repair\u003c\/strong\u003e: Most common repair IC in ATX power supplies, monitor power boards, and industrial SMPS\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eForward converter design\u003c\/strong\u003e: UC3842\/UC3843 for single-switch forward topology\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePush-pull \/ half-bridge\u003c\/strong\u003e: UC3845 (50% max duty cycle) for push-pull and half-bridge topologies\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eATX power supply repair\u003c\/strong\u003e: UC3842 or UC3843 is the primary PWM controller in most ATX PSUs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReference designs\u003c\/strong\u003e: Texas Instruments SLUA107, ON Semiconductor AND8016 application notes\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eQ: What is the difference between UC3842 and UC3843?\u003c\/strong\u003e\u003cbr\u003eA: Both have 100% max duty cycle and identical pinout. The key difference is UVLO (undervoltage lockout) threshold: UC3842 starts at 16V (suitable for offline SMPS with bootstrap startup), UC3843 starts at 8.5V (suitable for low-voltage and battery-powered SMPS). Use UC3843 when your VCC supply cannot reach 16V during startup.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Why does my SMPS use UC3845 instead of UC3842?\u003c\/strong\u003e\u003cbr\u003eA: UC3845 limits maximum duty cycle to 50%, which is required for push-pull and half-bridge topologies to prevent simultaneous conduction of both switches (shoot-through). UC3842 allows up to 100% duty cycle, suitable for single-switch flyback and forward converters only.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Can I replace UC3842 with KA3842 or SG3842?\u003c\/strong\u003e\u003cbr\u003eA: Yes — KA3842 (Samsung\/Fairchild), SG3842 (Silicon General), and UC3842 (TI\/ON Semi) are functionally identical with the same pinout and specifications. They are direct drop-in replacements for each other.\u003c\/p\u003e\u003ch3\u003ePackage Contents\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e5× UC3845AN \/ UC3845BN \/ UC3843AN \/ UC3842 PWM Controller IC (DIP-8) — variant as selected\u003c\/li\u003e\u003c\/ul\u003e","brand":"Keszoox","offers":[{"title":"UC3842AN","offer_id":46991460729067,"sku":"14:1202#UC3842AN","price":5.88,"currency_code":"USD","in_stock":true},{"title":"UC3845BN","offer_id":46991460761835,"sku":"14:4044226#UC3845BN","price":6.48,"currency_code":"USD","in_stock":true},{"title":"UC3845AN","offer_id":46991460794603,"sku":"14:350852#UC3845AN","price":6.68,"currency_code":"USD","in_stock":true},{"title":"UC3843AN","offer_id":46991460827371,"sku":"14:351074#UC3843AN","price":5.88,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/1005\/8731\/files\/uc3845an-uc3845bn-uc3843an-uc3842-dip-8-pwm-controller-ic-chipset.webp?v=1761794654"},{"product_id":"apw7165-apw7145-apw7302-apw7120-apw7142-apw7301-pwm-controller-sop8-5pack","title":"APW7165 \/ APW7145 \/ APW7302 \/ APW7120 \/ APW7142 \/ APW7301 PWM Controller IC — SOP-8 (5-Pack)","description":"\u003ch2\u003eAPW7165 \/ APW7145 \/ APW7302 \/ APW7120 \/ APW7142 \/ APW7301 PWM Controller IC — SOP-8 (5-Pack)\u003c\/h2\u003e\u003cp\u003eThe APW71xx and APW73xx series are SOP-8 PWM controller ICs from Anpec Electronics, designed for synchronous buck DC-DC converter applications in LCD monitors, LCD TVs, and consumer electronics power supplies. They integrate voltage-mode or current-mode PWM control with comprehensive protection (OCP, OVP, thermal shutdown) and are widely used as repair replacements in LCD power board SMPS stages.\u003c\/p\u003e\u003ch3\u003eVariant Overview\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003cth\u003eTopology\u003c\/th\u003e\n\u003cth\u003eKey Feature\u003c\/th\u003e\n\u003cth\u003eCommon Application\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAPW7165\u003c\/td\u003e\n\u003ctd\u003eSynchronous buck\u003c\/td\u003e\n\u003ctd\u003e5V\/12V dual output\u003c\/td\u003e\n\u003ctd\u003eLCD monitor logic supply\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAPW7145\u003c\/td\u003e\n\u003ctd\u003eSynchronous buck\u003c\/td\u003e\n\u003ctd\u003eHigh efficiency, wide input\u003c\/td\u003e\n\u003ctd\u003eLCD TV power board\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAPW7302\u003c\/td\u003e\n\u003ctd\u003eSynchronous buck\u003c\/td\u003e\n\u003ctd\u003eAdjustable frequency\u003c\/td\u003e\n\u003ctd\u003eGeneral SMPS design\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAPW7120\u003c\/td\u003e\n\u003ctd\u003eSynchronous buck\u003c\/td\u003e\n\u003ctd\u003eLow quiescent current\u003c\/td\u003e\n\u003ctd\u003eStandby power supply\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAPW7142\u003c\/td\u003e\n\u003ctd\u003eSynchronous buck\u003c\/td\u003e\n\u003ctd\u003eIntegrated gate driver\u003c\/td\u003e\n\u003ctd\u003eLCD backlight supply\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAPW7301\u003c\/td\u003e\n\u003ctd\u003eSynchronous buck\u003c\/td\u003e\n\u003ctd\u003eHigh current capability\u003c\/td\u003e\n\u003ctd\u003eHigh-power LCD supply\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eKey Specifications (All Variants)\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackage\u003c\/td\u003e\n\u003ctd\u003eSOP-8 (SMD)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTopology\u003c\/td\u003e\n\u003ctd\u003eSynchronous buck PWM controller\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection\u003c\/td\u003e\n\u003ctd\u003eOCP, OVP, thermal shutdown, soft-start, UVLO\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-40°C to +85°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuantity\u003c\/td\u003e\n\u003ctd\u003e5 pieces\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eWhy Choose APW71xx \/ APW73xx Series?\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLCD-specific design\u003c\/strong\u003e — optimized for the power sequencing and load profiles of LCD monitor and TV power boards\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull protection suite\u003c\/strong\u003e — OCP\/OVP\/thermal\/UVLO\/soft-start prevents cascade failure during repair\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSOP-8 footprint\u003c\/strong\u003e — direct replacement on existing LCD power board layouts\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide variant coverage\u003c\/strong\u003e — one listing covers the most common APW7xxx repair ICs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e5-pack value\u003c\/strong\u003e — sufficient for multiple LCD repair jobs\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCompatible With \/ Common Repair Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLCD monitor power board\u003c\/strong\u003e: 17–27 inch LCD monitor SMPS logic supply stage (Samsung, LG, Dell, AOC, Philips)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLCD TV power board\u003c\/strong\u003e: 32–55 inch LCD TV main power board step-down stage\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo-power fault\u003c\/strong\u003e: Monitor powers on briefly then shuts off, or no power — common symptom of failed APW7xxx IC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage rail missing\u003c\/strong\u003e: 5V or 12V logic rail absent on power board — check APW7xxx and associated MOSFETs\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eQ: How do I identify which APW7xxx variant is on my LCD power board?\u003c\/strong\u003e\u003cbr\u003eA: Read the markings on the original IC under magnification or with a loupe. The full part number is printed on the SOP-8 body (e.g., “APW7165” or “7165” abbreviated). Cross-reference with the board service manual or schematic if available. APW7165 is the most common variant in 19–24 inch LCD monitors.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: What other components should I check when replacing APW7xxx on an LCD power board?\u003c\/strong\u003e\u003cbr\u003eA: When replacing APW7xxx, also inspect: (1) the external power MOSFETs (often shorted when the controller fails), (2) bootstrap capacitor (typically 100nF ceramic), (3) output electrolytic capacitors (bulging = replace), (4) current-sense resistor for open circuit. Replacing only the IC without checking these often results in the new IC failing again.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Can APW7302 replace APW7165 in an existing LCD power board?\u003c\/strong\u003e\u003cbr\u003eA: Only if the pinout and specifications match. APW71xx and APW73xx variants are not universally pin-compatible. Always compare the datasheet pinout of the original IC with the replacement before substituting. Verify input voltage range, switching frequency, and gate drive compatibility.\u003c\/p\u003e\u003ch3\u003ePackage Contents\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e5× APW7165 \/ APW7145 \/ APW7302 \/ APW7120 \/ APW7142 \/ APW7301 PWM Controller IC (SOP-8) — variant as selected\u003c\/li\u003e\u003c\/ul\u003e","brand":"Keszoox","offers":[{"title":"APW7145","offer_id":46991461581035,"sku":"14:350852#APW7145","price":5.92,"currency_code":"USD","in_stock":true},{"title":"APW7142","offer_id":46991461613803,"sku":"14:201659813#APW7142","price":5.56,"currency_code":"USD","in_stock":true},{"title":"APW7120","offer_id":46991461646571,"sku":"14:4044226#APW7120","price":4.96,"currency_code":"USD","in_stock":true},{"title":"APW7165","offer_id":46991461679339,"sku":"14:1202#APW7165","price":5.28,"currency_code":"USD","in_stock":true},{"title":"APW7301","offer_id":46991461712107,"sku":"14:10#APW7301","price":11.28,"currency_code":"USD","in_stock":true},{"title":"APW7302","offer_id":46991461744875,"sku":"14:351074#APW7302","price":5.56,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/1005\/8731\/files\/apw7165-apw7145-apw7302-apw7120-apw7142-apw7301-sop-8-ic-chipset.webp?v=1761794278"},{"product_id":"icl7555-icm7555-cmos-timer-dip8-2-18v-60ua-555-compatible-5pack","title":"ICL7555 \/ ICM7555 CMOS Timer IC — DIP-8, 2–18V, 60μA, 555 Pin-Compatible (5-Pack)","description":"\u003ch2\u003eICL7555 \/ ICM7555 CMOS Timer IC — DIP-8, 2–18V, 60μA, NE555 Pin-Compatible (5-Pack)\u003c\/h2\u003e\u003cp\u003eThe ICL7555 and ICM7555 are CMOS versions of the classic NE555 timer IC, offering dramatically lower power consumption (60μA quiescent vs 3mA for NE555) while maintaining full pin and functional compatibility. Operating from 2V to 18V, they are ideal for battery-powered oscillator, timer, and PWM circuits where the NE555’s high quiescent current would drain batteries too quickly. The CMOS output swings rail-to-rail, providing cleaner logic levels than the bipolar NE555.\u003c\/p\u003e\u003ch3\u003eKey Specifications\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackage\u003c\/td\u003e\n\u003ctd\u003eDIP-8 (through-hole)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupply Voltage\u003c\/td\u003e\n\u003ctd\u003e2V – 18V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuiescent Current\u003c\/td\u003e\n\u003ctd\u003e60μA typ. (vs 3mA for NE555)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Current\u003c\/td\u003e\n\u003ctd\u003e10mA source\/sink (vs 200mA for NE555)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Swing\u003c\/td\u003e\n\u003ctd\u003eRail-to-rail (CMOS)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Oscillation Frequency\u003c\/td\u003e\n\u003ctd\u003e~500kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTiming Accuracy\u003c\/td\u003e\n\u003ctd\u003e±1% (with stable R\/C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-40°C to +85°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuantity\u003c\/td\u003e\n\u003ctd\u003e5 pieces\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eICL7555 \/ ICM7555 vs NE555 — CMOS vs Bipolar\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eICL7555 \/ ICM7555 (CMOS)\u003c\/th\u003e\n\u003cth\u003eNE555 (Bipolar)\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupply Voltage\u003c\/td\u003e\n\u003ctd\u003e2–18V\u003c\/td\u003e\n\u003ctd\u003e4.5–15V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuiescent Current\u003c\/td\u003e\n\u003ctd\u003e60μA (50× lower)\u003c\/td\u003e\n\u003ctd\u003e3mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Current\u003c\/td\u003e\n\u003ctd\u003e10mA\u003c\/td\u003e\n\u003ctd\u003e200mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Swing\u003c\/td\u003e\n\u003ctd\u003eRail-to-rail\u003c\/td\u003e\n\u003ctd\u003e~1.5V from rail\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTiming Accuracy\u003c\/td\u003e\n\u003ctd\u003eBetter (lower input bias)\u003c\/td\u003e\n\u003ctd\u003eStandard\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBest For\u003c\/td\u003e\n\u003ctd\u003eBattery-powered, low-power circuits\u003c\/td\u003e\n\u003ctd\u003eHigh-current output, LED\/relay drive\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eWhy Choose ICL7555 \/ ICM7555?\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e60μA quiescent current\u003c\/strong\u003e — 50× lower than NE555, extends battery life dramatically in always-on timer circuits\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2V minimum supply\u003c\/strong\u003e — works from a single AA battery (1.5V with boost) or two AA batteries (3V)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRail-to-rail output\u003c\/strong\u003e — cleaner logic levels for interfacing with CMOS logic and microcontrollers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePin-compatible with NE555\u003c\/strong\u003e — direct drop-in replacement, same circuit topology\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e5-pack value\u003c\/strong\u003e — sufficient for multiple low-power timer builds\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCompatible With \/ Common Use Cases\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBattery-powered oscillator\u003c\/strong\u003e: Astable mode from 2×AA (3V) for LED blinker, tone generator — months of battery life vs hours with NE555\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSleep timer circuit\u003c\/strong\u003e: Monostable mode to wake up a microcontroller periodically from deep sleep\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow-power PWM\u003c\/strong\u003e: Astable mode for motor speed control or LED dimming in battery devices\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSensor trigger\u003c\/strong\u003e: Monostable one-shot pulse generator for debounce or delay circuits\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3.3V logic compatible\u003c\/strong\u003e: Rail-to-rail output at 3.3V supply directly drives ESP32\/STM32 GPIO inputs\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eQ: Can ICL7555 directly replace NE555 in an existing circuit?\u003c\/strong\u003e\u003cbr\u003eA: Yes — ICL7555 is pin-compatible with NE555. However, note the lower output current (10mA vs 200mA). If your NE555 circuit drives an LED, relay, or buzzer directly from the output pin, the ICL7555 may not provide enough current. Add a transistor buffer (BC547) if more than 10mA output current is needed.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: What is the minimum supply voltage for ICL7555?\u003c\/strong\u003e\u003cbr\u003eA: ICL7555 operates from 2V minimum. At 2V, timing accuracy and output drive are reduced. For reliable operation, use ≥3V (2×AA batteries or single Li-ion). At 3.3V or 5V, performance is fully specified.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: How much longer does a battery last with ICL7555 vs NE555 in an astable circuit?\u003c\/strong\u003e\u003cbr\u003eA: In a simple astable oscillator with no load: NE555 draws ~3mA quiescent + output current. ICL7555 draws ~60μA quiescent. On a 2000mAh AA battery pair: NE555 lasts ~27 days; ICL7555 lasts ~3.8 years (quiescent only). With a 1mA LED load, ICL7555 still lasts ~2 years vs NE555’s ~20 days.\u003c\/p\u003e\u003ch3\u003ePackage Contents\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e5× ICL7555 \/ ICM7555 CMOS Timer IC (DIP-8)\u003c\/li\u003e\u003c\/ul\u003e","brand":"Keszoox","offers":[{"title":"Default Title","offer_id":46991464005867,"sku":"\u003cnone\u003e","price":9.28,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/1005\/8731\/files\/icl7555-icm7555-7555-dip8-timer-ic-chip.webp?v=1761720789"},{"product_id":"mje13001-mje13002-npn-power-transistor-to92-600v-200ma-smps-cfl-50pack","title":"MJE13001 \/ MJE13002 NPN Power Transistor — TO-92, 600V, 200mA, SMPS \u0026 CFL (50-Pack)","description":"\u003ch2\u003eMJE13001 \/ MJE13002 NPN Power Transistor — TO-92, 600V, 200mA, SMPS \u0026amp; CFL (50-Pack)\u003c\/h2\u003e\u003cp\u003eThe MJE13001 and MJE13002 are high-voltage NPN power transistors in TO-92 packages, rated at 600V collector-emitter voltage and 200mA continuous collector current. Designed for high-voltage switching applications, they are widely used in SMPS startup circuits, compact fluorescent lamp (CFL) ballasts, flyback converter auxiliary supplies, and high-voltage signal switching. The TO-92 package provides a compact footprint for PCB-mounted high-voltage switching stages.\u003c\/p\u003e\u003ch3\u003eKey Specifications\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackage\u003c\/td\u003e\n\u003ctd\u003eTO-92 (through-hole)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eNPN silicon power transistor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCollector-Emitter Voltage (VCEO)\u003c\/td\u003e\n\u003ctd\u003e600V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCollector-Base Voltage (VCBO)\u003c\/td\u003e\n\u003ctd\u003e700V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eContinuous Collector Current (IC)\u003c\/td\u003e\n\u003ctd\u003e200mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDC Current Gain (hFE)\u003c\/td\u003e\n\u003ctd\u003e8–40 (at IC=100mA)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCollector Power Dissipation (PC)\u003c\/td\u003e\n\u003ctd\u003e625mW (TO-92, free air)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransition Frequency (fT)\u003c\/td\u003e\n\u003ctd\u003e~4MHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-55°C to +150°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuantity\u003c\/td\u003e\n\u003ctd\u003e50 pieces\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eMJE13001 vs MJE13002 vs 2SC1815\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eMJE13001\u003c\/th\u003e\n\u003cth\u003eMJE13002\u003c\/th\u003e\n\u003cth\u003e2SC1815\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVCEO\u003c\/td\u003e\n\u003ctd\u003e600V\u003c\/td\u003e\n\u003ctd\u003e600V\u003c\/td\u003e\n\u003ctd\u003e50V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIC max\u003c\/td\u003e\n\u003ctd\u003e200mA\u003c\/td\u003e\n\u003ctd\u003e200mA\u003c\/td\u003e\n\u003ctd\u003e150mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ehFE\u003c\/td\u003e\n\u003ctd\u003e8–40\u003c\/td\u003e\n\u003ctd\u003e8–40\u003c\/td\u003e\n\u003ctd\u003e70–700\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBest for\u003c\/td\u003e\n\u003ctd\u003eHigh-voltage SMPS, CFL ballast\u003c\/td\u003e\n\u003ctd\u003eHigh-voltage SMPS, CFL ballast\u003c\/td\u003e\n\u003ctd\u003eLow-voltage audio, signal switching\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eWhy Choose MJE13001 \/ MJE13002?\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e600V VCEO\u003c\/strong\u003e — handles mains-derived high-voltage DC bus (up to 400V DC from 230V AC rectified)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTO-92 compact package\u003c\/strong\u003e — small footprint for high-voltage switching in compact SMPS and CFL PCBs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e200mA collector current\u003c\/strong\u003e — sufficient for SMPS startup, gate drive, and auxiliary supply circuits\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e-55°C to +150°C\u003c\/strong\u003e — wide temperature range for industrial and lighting applications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e50-pack value\u003c\/strong\u003e — sufficient for multiple SMPS repair jobs and CFL ballast replacements\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCompatible With \/ Common Use Cases\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSMPS startup circuit\u003c\/strong\u003e: High-voltage startup transistor in flyback SMPS (ATX power supply, phone charger, adapter)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCFL ballast\u003c\/strong\u003e: Half-bridge switching transistor in compact fluorescent lamp electronic ballast\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlyback auxiliary supply\u003c\/strong\u003e: High-voltage switch for auxiliary winding rectifier in isolated SMPS\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-voltage signal switching\u003c\/strong\u003e: Switch 100–400V DC signals in industrial control circuits\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSnubber circuit\u003c\/strong\u003e: Clamp high-voltage spikes in inductive switching circuits\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eQ: What is the difference between MJE13001 and MJE13002?\u003c\/strong\u003e\u003cbr\u003eA: MJE13001 and MJE13002 have identical electrical specifications (600V, 200mA, hFE 8–40). The difference is typically in the gain grouping or manufacturing batch — they are functionally interchangeable in most SMPS and CFL applications. Always verify with the specific datasheet for your application.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Can MJE13001 replace 2SC3457 or 2SC4106 in a CFL ballast?\u003c\/strong\u003e\u003cbr\u003eA: MJE13001 is a common replacement for high-voltage NPN transistors in CFL ballasts. Verify VCEO (≥600V), IC (≥200mA), and package (TO-92) match before substituting. The hFE range (8–40) is typical for CFL ballast transistors. Check the original transistor’s datasheet for exact specifications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Why does MJE13001 have such low hFE (8–40) compared to BC547 (420–800)?\u003c\/strong\u003e\u003cbr\u003eA: High-voltage transistors inherently have lower current gain than low-voltage signal transistors. The high-voltage junction design that enables 600V VCEO reduces the minority carrier lifetime, resulting in lower hFE. For SMPS and CFL applications, low hFE is acceptable because the base drive current is provided by the oscillator circuit, not a microcontroller GPIO.\u003c\/p\u003e\u003ch3\u003ePackage Contents\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e50× MJE13001 \/ MJE13002 NPN Power Transistor (TO-92)\u003c\/li\u003e\u003c\/ul\u003e","brand":"Keszoox","offers":[{"title":"MJE13001","offer_id":46991466922219,"sku":"14:4044226#MJE13001","price":4.84,"currency_code":"USD","in_stock":true},{"title":"MJE13002","offer_id":46991466954987,"sku":"14:1202#MJE13002","price":4.84,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/1005\/8731\/files\/mje13001-mje13002-to92-npn-power-transistor.webp?v=1761719255"},{"product_id":"2kv-high-voltage-ceramic-capacitor-kit-102k-821k-y1-y2-smps-cfl-assortment","title":"2KV High Voltage Ceramic Capacitor Kit — 102K–821K, Y1\/Y2 Class, SMPS \u0026 CFL (Assortment)","description":"\u003ch2\u003e2KV High Voltage Ceramic Capacitor Kit — 102K–821K, Y1\/Y2 Class, SMPS \u0026amp; CFL Assortment\u003c\/h2\u003e\u003cp\u003eThis assortment kit contains high-voltage ceramic disc capacitors rated at 2KV (2000V), covering the most commonly used values from 102K (1nF) to 821K (820pF). These Y1\/Y2-class safety capacitors are designed for mains-connected circuits including SMPS snubber networks, CFL ballast resonant circuits, flyback converter clamp circuits, and EMI filter Y-capacitors. The 2KV rating provides adequate margin for 230V AC mains applications (peak voltage ~325V) and high-voltage DC bus circuits.\u003c\/p\u003e\u003ch3\u003eCapacitor Value Decoding\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eMarking\u003c\/th\u003e\n\u003cth\u003eCapacitance\u003c\/th\u003e\n\u003cth\u003eCommon Use\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e102K\u003c\/td\u003e\n\u003ctd\u003e1nF (1000pF) ±10%\u003c\/td\u003e\n\u003ctd\u003eSMPS snubber, EMI filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e221K\u003c\/td\u003e\n\u003ctd\u003e220pF ±10%\u003c\/td\u003e\n\u003ctd\u003eCFL resonant circuit, RF filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e332K\u003c\/td\u003e\n\u003ctd\u003e3.3nF ±10%\u003c\/td\u003e\n\u003ctd\u003eFlyback snubber, SMPS clamp\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e471K\u003c\/td\u003e\n\u003ctd\u003e470pF ±10%\u003c\/td\u003e\n\u003ctd\u003eCFL ballast, resonant tank\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e472K\u003c\/td\u003e\n\u003ctd\u003e4.7nF ±10%\u003c\/td\u003e\n\u003ctd\u003eSMPS snubber, Y-capacitor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e561K\u003c\/td\u003e\n\u003ctd\u003e560pF ±10%\u003c\/td\u003e\n\u003ctd\u003eHigh-voltage filter, RF bypass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e681K\u003c\/td\u003e\n\u003ctd\u003e680pF ±10%\u003c\/td\u003e\n\u003ctd\u003eCFL resonant, SMPS timing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e821K\u003c\/td\u003e\n\u003ctd\u003e820pF ±10%\u003c\/td\u003e\n\u003ctd\u003eHigh-voltage bypass, snubber\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eKey Specifications\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVoltage Rating\u003c\/td\u003e\n\u003ctd\u003e2KV (2000V DC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTolerance\u003c\/td\u003e\n\u003ctd\u003e±10% (K grade)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDielectric\u003c\/td\u003e\n\u003ctd\u003eClass Y1\/Y2 ceramic disc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Coefficient\u003c\/td\u003e\n\u003ctd\u003eY5P \/ Z5U (high-voltage disc type)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackage\u003c\/td\u003e\n\u003ctd\u003eRadial lead disc (through-hole)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-25°C to +85°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eWhy Use 2KV Ceramic Capacitors?\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e2KV rating\u003c\/strong\u003e — 6× margin over 325V mains peak, essential for reliable long-term SMPS operation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eY1\/Y2 safety class\u003c\/strong\u003e — approved for mains-connected circuits where capacitor failure could cause electric shock\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCeramic disc construction\u003c\/strong\u003e — self-healing dielectric, no polarity, suitable for AC and DC high-voltage circuits\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAssortment kit\u003c\/strong\u003e — covers all common SMPS and CFL values in one purchase\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThrough-hole radial\u003c\/strong\u003e — easy to solder on prototype and repair PCBs\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCompatible With \/ Common Use Cases\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSMPS snubber network\u003c\/strong\u003e: RC snubber across MOSFET drain-source or diode to suppress voltage spikes (102K–472K at 2KV)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCFL ballast resonant circuit\u003c\/strong\u003e: 221K–681K in series resonant tank with inductor for lamp ignition\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlyback converter clamp\u003c\/strong\u003e: 102K–332K across primary winding to clamp leakage inductance spikes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEMI filter Y-capacitor\u003c\/strong\u003e: 472K between mains line and earth ground for common-mode noise suppression\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-voltage bypass\u003c\/strong\u003e: Bypass capacitor on 400V DC bus in PFC and inverter circuits\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eQ: What does the “K” suffix mean in 102K, 472K capacitor markings?\u003c\/strong\u003e\u003cbr\u003eA: The “K” is the tolerance code, meaning ±10%. The number before K is the capacitance code: first two digits are significant figures, third digit is the multiplier (number of zeros in pF). So 102K = 10 × 10² pF = 1000pF = 1nF ±10%. 472K = 47 × 10² pF = 4700pF = 4.7nF ±10%.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Can I use these capacitors in a 230V AC mains circuit?\u003c\/strong\u003e\u003cbr\u003eA: Yes — 2KV rated capacitors are suitable for 230V AC mains circuits. The 230V AC peak voltage is ~325V, giving a 6× safety margin. For Y-capacitor applications (line-to-earth), ensure the capacitor is Y1 or Y2 safety class certified. Do not use standard ceramic capacitors (rated 50V–100V) in mains circuits.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: What is the difference between X-capacitors and Y-capacitors in EMI filters?\u003c\/strong\u003e\u003cbr\u003eA: X-capacitors connect across the mains lines (L–N) to suppress differential-mode noise. Y-capacitors connect from each mains line to earth ground (L–PE, N–PE) to suppress common-mode noise. Y-capacitors must be safety-rated (Y1\/Y2 class) because their failure could result in mains voltage appearing on the earth ground, creating an electric shock hazard.\u003c\/p\u003e\u003ch3\u003ePackage Contents\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eAssortment of 2KV High Voltage Ceramic Disc Capacitors (values as listed, quantity per value as specified)\u003c\/li\u003e\u003c\/ul\u003e","brand":"Keszoox","offers":[{"title":"Default Title","offer_id":46991468232939,"sku":"\u003cnone\u003e","price":9.44,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/1005\/8731\/files\/2kv-high-voltage-ceramic-capacitor-assortment-kit-set.webp?v=1761718884"},{"product_id":"rt9711a-rt8105-rt8293ah-rt9214-rt7257-rt8284-rt8108-rt9108-rt8289-rt8120a-sop8-2pack","title":"RT9711A \/ RT8105 \/ RT8293AH \/ RT9214 \/ RT7257 \/ RT8284 \/ RT8108 \/ RT9108 \/ RT8289 \/ RT8120A SOP-8 Power Management IC (2-Pack)","description":"\u003ch2\u003eRichtek RT-Series SOP-8 Power Management ICs — Buck, Boost, LDO \u0026amp; Load Switch\u003c\/h2\u003e\u003cp\u003eA selection of \u003cstrong\u003eRichtek (RT) SOP-8 power management ICs\u003c\/strong\u003e covering buck converters, boost converters, LDO regulators, and load switches. Each listing is a \u003cstrong\u003e2-pack of the same IC\u003c\/strong\u003e — choose the specific part number from the variant selector. All are new, original Richtek parts in SOP-8 SMD package.\u003c\/p\u003e\u003chr\u003e\u003ch3\u003eIC Variants \u0026amp; Key Functions\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003cth\u003eFunction\u003c\/th\u003e\n\u003cth\u003eKey Specs\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eRT9711A\u003c\/td\u003e\n\u003ctd\u003eLoad Switch \/ Power Distribution Switch\u003c\/td\u003e\n\u003ctd\u003e2.5–5.5V, 2A, OVP, OCP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRT8105\u003c\/td\u003e\n\u003ctd\u003eSynchronous Buck Converter\u003c\/td\u003e\n\u003ctd\u003e4.5–18V in, Adj. out, 2A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRT8293AH\u003c\/td\u003e\n\u003ctd\u003eBoost Converter\u003c\/td\u003e\n\u003ctd\u003e2.5–5.5V in, up to 28V out, 1.2A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRT9214\u003c\/td\u003e\n\u003ctd\u003ePWM Controller (Synchronous Buck)\u003c\/td\u003e\n\u003ctd\u003eMulti-phase capable, notebook PSU\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRT7257\u003c\/td\u003e\n\u003ctd\u003eSynchronous Buck Converter\u003c\/td\u003e\n\u003ctd\u003e4.5–18V in, 0.6–5V out, 3A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRT8284\u003c\/td\u003e\n\u003ctd\u003eSynchronous Buck Converter\u003c\/td\u003e\n\u003ctd\u003e4.5–18V in, Adj. out, 2A, 1.5MHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRT8108\u003c\/td\u003e\n\u003ctd\u003eSynchronous Buck Converter\u003c\/td\u003e\n\u003ctd\u003e4.5–18V in, Adj. out, 3A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRT9108\u003c\/td\u003e\n\u003ctd\u003eLDO Voltage Regulator\u003c\/td\u003e\n\u003ctd\u003eUp to 6V in, Adj. out, 300mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRT8289\u003c\/td\u003e\n\u003ctd\u003eSynchronous Buck Converter\u003c\/td\u003e\n\u003ctd\u003e4.5–18V in, Adj. out, 2A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRT8120A\u003c\/td\u003e\n\u003ctd\u003eSynchronous Buck Converter\u003c\/td\u003e\n\u003ctd\u003e4.5–18V in, Adj. out, 3A, 340kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003chr\u003e\u003ch3\u003eWhy Choose Richtek RT-Series?\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh integration\u003c\/strong\u003e — internal MOSFETs eliminate external switching transistors\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSOP-8 package\u003c\/strong\u003e — compact SMD footprint for space-efficient PCB designs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh efficiency\u003c\/strong\u003e — synchronous rectification for \u0026gt;90% efficiency in buck converters\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide input range\u003c\/strong\u003e — most variants accept 4.5–18V for 5V, 9V, 12V systems\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2-pack value\u003c\/strong\u003e — one for prototyping, one as spare\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNew \u0026amp; original\u003c\/strong\u003e — genuine Richtek parts, not remarked or counterfeit\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch3\u003eTypical Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNotebook \/ laptop power supply\u003c\/strong\u003e — RT9214 multi-phase PWM controller for CPU core voltage\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUSB power delivery\u003c\/strong\u003e — RT9711A load switch for USB port power management\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLED backlight boost\u003c\/strong\u003e — RT8293AH boost converter for LCD panel backlight\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePoint-of-load regulation\u003c\/strong\u003e — RT8105\/RT8284\/RT8108 for board-level voltage regulation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIoT device power\u003c\/strong\u003e — compact buck converters for ESP32, STM32, and sensor nodes\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eQ: How do I identify which RT IC I need?\u003c\/strong\u003e\u003cbr\u003eA: Check the marking on your existing IC or refer to the schematic. The part number is printed on the SOP-8 package. Select the matching variant from the dropdown.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Are these compatible with standard SOP-8 PCB footprints?\u003c\/strong\u003e\u003cbr\u003eA: Yes. All variants use the standard SOP-8 (1.27mm pitch, 3.9mm body width) footprint.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Do I need external inductors and capacitors?\u003c\/strong\u003e\u003cbr\u003eA: Yes. Buck and boost converters require external inductors, input\/output capacitors, and feedback resistors. Refer to the Richtek datasheet for the specific part number for recommended component values.\u003c\/p\u003e\u003chr\u003e\u003ch3\u003ePackage Contents\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e2× Selected Richtek RT-Series SOP-8 Power Management IC (new, original)\u003c\/li\u003e\u003c\/ul\u003e","brand":"Keszoox","offers":[{"title":"RT7257","offer_id":46991475507435,"sku":"14:201659813#RT7257","price":5.16,"currency_code":"USD","in_stock":true},{"title":"RT8284","offer_id":46991475540203,"sku":"14:10#RT8284","price":4.64,"currency_code":"USD","in_stock":true},{"title":"RT8293AH","offer_id":46991475572971,"sku":"14:351074#RT8293AH","price":6.12,"currency_code":"USD","in_stock":true},{"title":"RT9214","offer_id":46991475605739,"sku":"14:4044226#RT9214","price":4.96,"currency_code":"USD","in_stock":true},{"title":"RT9711A","offer_id":46991475638507,"sku":"14:1202#RT9711A","price":4.64,"currency_code":"USD","in_stock":true},{"title":"RT8105","offer_id":46991475671275,"sku":"14:350852#RT8105","price":4.64,"currency_code":"USD","in_stock":true},{"title":"RT8289","offer_id":46991475704043,"sku":"14:173#RT8289","price":13.24,"currency_code":"USD","in_stock":true},{"title":"RT8120A","offer_id":46991475736811,"sku":"14:175#RT8120A","price":4.64,"currency_code":"USD","in_stock":true},{"title":"RT8108","offer_id":46991475769579,"sku":"14:29#RT8108","price":6.64,"currency_code":"USD","in_stock":true},{"title":"RT9018","offer_id":46991475802347,"sku":"14:94#RT9018","price":4.64,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/1005\/8731\/files\/rt-sop8-power-management-ics.webp?v=1761630687"},{"product_id":"ne555-ne555d-sop8-smd-timer-ic-new-original","title":"NE555 \/ NE555D SOP-8 SMD Timer IC — New Original","description":"\u003ch2\u003eNE555 \/ NE555D — SOP-8 SMD Timer IC\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003eNE555\u003c\/strong\u003e is the world's most popular timer IC, and this listing provides the \u003cstrong\u003eSOP-8 SMD surface-mount version (NE555D)\u003c\/strong\u003e — new and original parts. Ideal for compact PCB designs where the classic DIP-8 package is too large. Operates in astable, monostable, and bistable modes.\u003c\/p\u003e\u003chr\u003e\u003ch3\u003eKey Specifications\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Numbers\u003c\/td\u003e\n\u003ctd\u003eNE555 \/ NE555D\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackage\u003c\/td\u003e\n\u003ctd\u003eSOP-8 (SMD)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupply Voltage (Vcc)\u003c\/td\u003e\n\u003ctd\u003e4.5V – 16V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Current (sink\/source)\u003c\/td\u003e\n\u003ctd\u003e200mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTiming Range\u003c\/td\u003e\n\u003ctd\u003eMicroseconds to hours\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency Range\u003c\/td\u003e\n\u003ctd\u003e0.1Hz – 1MHz (astable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e0°C to +70°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTrigger Threshold\u003c\/td\u003e\n\u003ctd\u003e1\/3 Vcc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReset Threshold\u003c\/td\u003e\n\u003ctd\u003e2\/3 Vcc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003chr\u003e\u003ch3\u003eWhy Choose NE555D SOP-8?\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e✅ \u003cstrong\u003eSMD form factor\u003c\/strong\u003e — saves PCB space vs DIP-8, compatible with reflow soldering\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003e200mA output\u003c\/strong\u003e — directly drives LEDs, small relays, and buzzers\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003eWide voltage range\u003c\/strong\u003e — works from 4.5V to 16V (3.3V systems use TLC555)\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003eNew \u0026amp; original\u003c\/strong\u003e — genuine NE555 grade, not SA555 or LM555 substitutes\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003eIndustry-standard pinout\u003c\/strong\u003e — drop-in compatible with all NE555 circuit designs\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch3\u003eCompatible With \/ Works With\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eArduino PWM signal generation (external oscillator for precise frequency)\u003c\/li\u003e\n\u003cli\u003eIR remote control carrier generation (38kHz astable)\u003c\/li\u003e\n\u003cli\u003eServo motor PWM signal (1–20ms period monostable)\u003c\/li\u003e\n\u003cli\u003eLED flasher and blinker circuits\u003c\/li\u003e\n\u003cli\u003eDebounce circuits for mechanical switches\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch3\u003eTypical Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePWM Generation\u003c\/strong\u003e — motor speed control, LED dimming (astable mode)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePulse Generation\u003c\/strong\u003e — single-shot timer for relay control (monostable mode)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOscillator\u003c\/strong\u003e — clock signal for logic circuits, 38kHz IR carrier\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMissing Pulse Detector\u003c\/strong\u003e — watchdog timer for embedded systems\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTone Generator\u003c\/strong\u003e — audio frequency buzzer and alarm circuits\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eQ: What is the difference between NE555 and NE555D?\u003c\/strong\u003e\u003cbr\u003eA: NE555D is the SOP-8 surface-mount package variant of the NE555. Electrically identical — only the package differs (DIP-8 vs SOP-8).\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Can NE555D work at 3.3V for Arduino\/ESP32 circuits?\u003c\/strong\u003e\u003cbr\u003eA: The NE555 minimum Vcc is 4.5V, so it is not suitable for 3.3V-only systems. Use TLC555 (1V–15V) or LMC555 (1.5V–15V) for 3.3V operation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: What is the maximum frequency for NE555 in astable mode?\u003c\/strong\u003e\u003cbr\u003eA: Approximately 500kHz–1MHz with small RC values. For higher frequencies, use a dedicated oscillator IC like NE556 or a crystal oscillator.\u003c\/p\u003e\u003chr\u003e\u003ch3\u003ePackage Contents\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eNE555 \/ NE555D SOP-8 SMD Timer IC (quantity per variant selected)\u003c\/li\u003e\u003c\/ul\u003e","brand":"Keszoox","offers":[{"title":"20PCS-NE555D","offer_id":46991477866731,"sku":"14:10#20PCS-NE555D","price":5.32,"currency_code":"USD","in_stock":true},{"title":"10PCS-NE555D","offer_id":46991477899499,"sku":"14:350852#10PCS-NE555D","price":4.48,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/1005\/8731\/files\/ne555-ne555d-sop8-timer-ic-smd-chipset.webp?v=1761628866"},{"product_id":"ice3bs03ljg-3bs3lj-sop8-flyback-power-switch-controller-ic-2pcs","title":"ICE3BS03LJG \/ 3BS3LJ SOP-8 Flyback Power Switch Controller IC (2pcs)","description":"\u003ch2\u003eICE3BS03LJG \/ 3BS3LJ — SOP-8 Flyback Power Switch Controller IC\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003eICE3BS03LJG\u003c\/strong\u003e (also marked \u003cstrong\u003e3BS3LJ\u003c\/strong\u003e) is an \u003cstrong\u003eInfineon CoolSET® integrated flyback controller\u003c\/strong\u003e combining a PWM controller and a \u003cstrong\u003e650V N-channel MOSFET\u003c\/strong\u003e in a single SOP-8 package. Designed for low-power offline flyback SMPS, it's widely used in LCD monitor standby power supplies and auxiliary power stages. This listing provides \u003cstrong\u003e2 pieces\u003c\/strong\u003e — new and original.\u003c\/p\u003e\u003chr\u003e\u003ch3\u003eKey Specifications\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Numbers\u003c\/td\u003e\n\u003ctd\u003eICE3BS03LJG \/ 3BS3LJ\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackage\u003c\/td\u003e\n\u003ctd\u003eSOP-8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIntegrated MOSFET\u003c\/td\u003e\n\u003ctd\u003e650V N-channel (built-in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDrain Current (ID)\u003c\/td\u003e\n\u003ctd\u003e0.3A (continuous)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSwitching Frequency\u003c\/td\u003e\n\u003ctd\u003eFixed 65kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStartup Current\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;200μA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBurst Mode\u003c\/td\u003e\n\u003ctd\u003eYes (light-load efficiency)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtections\u003c\/td\u003e\n\u003ctd\u003eOVP, OCP, OTP, SCP, auto-restart\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVcc Range\u003c\/td\u003e\n\u003ctd\u003e10V – 23V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-25°C to +125°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuantity\u003c\/td\u003e\n\u003ctd\u003e2 PCS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003chr\u003e\u003ch3\u003eWhy Choose ICE3BS03LJG?\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e✅ \u003cstrong\u003eIntegrated MOSFET\u003c\/strong\u003e — no external power switch needed, reduces BOM and PCB area\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003eBurst mode\u003c\/strong\u003e — ultra-low standby power (\u0026lt;1W) for energy efficiency compliance\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003eAuto-restart protection\u003c\/strong\u003e — safe recovery from fault conditions without manual reset\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003eInfineon CoolSET®\u003c\/strong\u003e — proven reliability in millions of LCD monitor PSUs\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003eNew \u0026amp; original\u003c\/strong\u003e — genuine Infineon parts for reliable repair\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch3\u003eCompatible With \/ Works With\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eLCD monitor standby\/auxiliary power supply boards (5VSB rail)\u003c\/li\u003e\n\u003cli\u003eLCD TV standby power stage (3.3VSB \/ 5VSB)\u003c\/li\u003e\n\u003cli\u003eLow-power offline flyback adapters (\u0026lt;10W output)\u003c\/li\u003e\n\u003cli\u003eFlyback transformers: EE13, EE16, EI19 cores\u003c\/li\u003e\n\u003cli\u003eOptocoupler feedback: PC817 + TL431 secondary regulation\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch3\u003eTypical Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLCD Monitor Standby PSU\u003c\/strong\u003e — 5VSB rail generation in 17–27\" monitor power boards\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLCD TV Auxiliary Power\u003c\/strong\u003e — 3.3VSB \/ 5VSB for TV microcontroller and IR receiver\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow-Power Offline Flyback\u003c\/strong\u003e — \u0026lt;10W isolated power supply for industrial controls\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUSB Charger Design\u003c\/strong\u003e — 5V\/1A isolated flyback with ICE3BS03LJG\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eQ: What does \"3BS3LJ\" marking mean on the IC?\u003c\/strong\u003e\u003cbr\u003eA: \"3BS3LJ\" is the abbreviated date\/lot code marking used on the SOP-8 package. It corresponds to ICE3BS03LJG — the full part number from Infineon.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Can ICE3BS03LJG replace ICE3BS02LJG or ICE3BS04LJG?\u003c\/strong\u003e\u003cbr\u003eA: These are the same CoolSET® family with different MOSFET current ratings (02=0.2A, 03=0.3A, 04=0.4A). Pinout is identical — use a higher-rated variant (04LJG) as a direct upgrade if the original is marginal.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: How do I diagnose a failed ICE3BS03LJG?\u003c\/strong\u003e\u003cbr\u003eA: Check for: no Vcc startup voltage, MOSFET drain shorted to source (measure D-S resistance), or no switching waveform on drain. A shorted internal MOSFET is the most common failure mode.\u003c\/p\u003e\u003chr\u003e\u003ch3\u003ePackage Contents\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e2× ICE3BS03LJG \/ 3BS3LJ SOP-8 Flyback Power Switch Controller IC\u003c\/li\u003e\u003c\/ul\u003e","brand":"Keszoox","offers":[{"title":"Default Title","offer_id":46991479570667,"sku":"\u003cnone\u003e","price":17.48,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/1005\/8731\/files\/ice3bs03ljg-3bs3lj-sop8-power-switch-controller-ic.webp?v=1761628195"},{"product_id":"sg3525a-sg3525ap-16pin-pwm-controller-ic-push-pull-smps-5pcs","title":"SG3525A \/ SG3525AP 16-Pin PWM Controller IC — Push-Pull SMPS (5pcs)","description":"\u003ch2\u003eSG3525A \/ SG3525AP — 16-Pin PWM Controller IC\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003eSG3525A\u003c\/strong\u003e is a classic \u003cstrong\u003evoltage-mode PWM controller\u003c\/strong\u003e with complementary push-pull outputs, designed for \u003cstrong\u003epush-pull, half-bridge, and full-bridge SMPS topologies\u003c\/strong\u003e. With a wide supply range of 8–35V, 400mA output drive, and programmable soft-start, it remains the go-to IC for inverter and DC-DC converter designs. This listing provides \u003cstrong\u003e5 pieces\u003c\/strong\u003e — new and original.\u003c\/p\u003e\u003chr\u003e\u003ch3\u003eKey Specifications\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Numbers\u003c\/td\u003e\n\u003ctd\u003eSG3525A \/ SG3525AP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackage\u003c\/td\u003e\n\u003ctd\u003eDIP-16 \/ SOP-16 (per variant)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupply Voltage (Vcc)\u003c\/td\u003e\n\u003ctd\u003e8V – 35V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Current (peak)\u003c\/td\u003e\n\u003ctd\u003e400mA sink\/source (per output)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOscillator Frequency\u003c\/td\u003e\n\u003ctd\u003e100Hz – 500kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Mode\u003c\/td\u003e\n\u003ctd\u003eComplementary push-pull (50% max duty each)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDead-Time Control\u003c\/td\u003e\n\u003ctd\u003eProgrammable (CT discharge resistor)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSoft Start\u003c\/td\u003e\n\u003ctd\u003eProgrammable (external capacitor)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReference Voltage\u003c\/td\u003e\n\u003ctd\u003e5.1V ±1% internal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eError Amplifier\u003c\/td\u003e\n\u003ctd\u003e1 (with 70dB gain, 1MHz GBW)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e0°C to +70°C (A grade)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuantity\u003c\/td\u003e\n\u003ctd\u003e5 PCS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003chr\u003e\u003ch3\u003eWhy Choose SG3525A?\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e✅ \u003cstrong\u003eComplementary push-pull outputs\u003c\/strong\u003e — directly drives transformer primary in push-pull\/half-bridge topologies\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003e400mA output drive\u003c\/strong\u003e — 2× higher than TL494, drives larger MOSFETs directly\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003eProgrammable soft-start\u003c\/strong\u003e — prevents inrush current on startup\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003eShutdown pin\u003c\/strong\u003e — immediate output disable for protection circuits\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003eWide frequency range\u003c\/strong\u003e — 100Hz to 500kHz for diverse SMPS designs\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch3\u003eCompatible With \/ Works With\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003ePush-pull inverter transformer drivers (EE42, EE55, EI66 cores)\u003c\/li\u003e\n\u003cli\u003e12V to 220V pure sine wave inverter driver stages\u003c\/li\u003e\n\u003cli\u003eHalf-bridge DC-DC converter control (48V to 12V)\u003c\/li\u003e\n\u003cli\u003eN-channel MOSFET pairs: IRF3205, IRFZ44N, STP75NF75\u003c\/li\u003e\n\u003cli\u003eGate driver ICs: IR2110, TC4420 (for high-frequency designs)\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch3\u003eTypical Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e12V–220V Inverter\u003c\/strong\u003e — push-pull driver for EE42\/EE55 transformer, 500W–1kW\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPS Inverter Stage\u003c\/strong\u003e — SPWM generation for sine-wave UPS output\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDC-DC Converter\u003c\/strong\u003e — half-bridge 48V to 12V\/5V converter for telecom\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMotor Drive\u003c\/strong\u003e — H-bridge PWM control for DC servo motors\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInduction Heater\u003c\/strong\u003e — resonant half-bridge driver with ZVS detection\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eQ: What is the difference between SG3525A and SG3525?\u003c\/strong\u003e\u003cbr\u003eA: SG3525A is the improved version with tighter reference voltage tolerance (±1% vs ±2%) and better temperature stability. Always prefer SG3525A for new designs.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: How does SG3525A differ from TL494?\u003c\/strong\u003e\u003cbr\u003eA: SG3525A has 400mA output (vs 200mA for TL494), a dedicated shutdown pin, and complementary outputs with built-in dead-time. TL494 has dual error amplifiers. SG3525A is preferred for push-pull inverter designs.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: How do I set the switching frequency?\u003c\/strong\u003e\u003cbr\u003eA: Connect RT between pin 6 and Vref (pin 16), CT between pin 5 and GND. Frequency ≈ 1 \/ (CT × (0.7 × RT + 3 × RD)), where RD is the dead-time resistor on pin 5. For 50kHz: RT=10kΩ, CT=2.2nF.\u003c\/p\u003e\u003chr\u003e\u003ch3\u003ePackage Contents\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e5× SG3525A \/ SG3525AP 16-Pin PWM Controller IC\u003c\/li\u003e\u003c\/ul\u003e","brand":"Keszoox","offers":[{"title":"Default Title","offer_id":46991479668971,"sku":"\u003cnone\u003e","price":5.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/1005\/8731\/files\/sg3525a-sg3525ap-16pin-pwm-controller-ic-smd.webp?v=1761547668"},{"product_id":"ka7500b-ka7500-dip16-pwm-controller-ic-tl494-equivalent-5pcs","title":"KA7500B \/ KA7500 DIP-16 PWM Controller IC — TL494 Equivalent (5pcs)","description":"\u003ch2\u003eKA7500B \/ KA7500 — DIP-16 PWM Controller IC (TL494 Equivalent)\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003eKA7500B\u003c\/strong\u003e is Samsung's \u003cstrong\u003epin-compatible equivalent of the TL494\u003c\/strong\u003e PWM controller IC in DIP-16 package. Electrically identical to TL494CN, it features dual error amplifiers, programmable dead-time, and complementary push-pull outputs capable of \u003cstrong\u003e200mA\u003c\/strong\u003e. Widely used in ATX power supplies, inverters, and DC-DC converters. This listing provides \u003cstrong\u003e5 pieces\u003c\/strong\u003e — new and original.\u003c\/p\u003e\u003chr\u003e\u003ch3\u003eKey Specifications\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Numbers\u003c\/td\u003e\n\u003ctd\u003eKA7500B \/ KA7500\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackage\u003c\/td\u003e\n\u003ctd\u003eDIP-16\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTL494 Compatible\u003c\/td\u003e\n\u003ctd\u003e✅ Yes (pin-for-pin)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupply Voltage (Vcc)\u003c\/td\u003e\n\u003ctd\u003e7V – 40V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Current (per driver)\u003c\/td\u003e\n\u003ctd\u003e200mA sink\/source\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOscillator Frequency\u003c\/td\u003e\n\u003ctd\u003e1Hz – 300kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eError Amplifiers\u003c\/td\u003e\n\u003ctd\u003e2 (differential, 70dB gain)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDead-Time Control\u003c\/td\u003e\n\u003ctd\u003e0–45% programmable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Modes\u003c\/td\u003e\n\u003ctd\u003eSingle-ended or push-pull\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInternal Reference\u003c\/td\u003e\n\u003ctd\u003e5V ±1%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e0°C to +70°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuantity\u003c\/td\u003e\n\u003ctd\u003e5 PCS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003chr\u003e\u003ch3\u003eKA7500B vs TL494 Equivalents\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003cth\u003eManufacturer\u003c\/th\u003e\n\u003cth\u003ePackage\u003c\/th\u003e\n\u003cth\u003eNotes\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eKA7500B\u003c\/td\u003e\n\u003ctd\u003eSamsung (Fairchild)\u003c\/td\u003e\n\u003ctd\u003eDIP-16\u003c\/td\u003e\n\u003ctd\u003ePin-compatible TL494\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTL494CN\u003c\/td\u003e\n\u003ctd\u003eTexas Instruments\u003c\/td\u003e\n\u003ctd\u003eDIP-16\u003c\/td\u003e\n\u003ctd\u003eOriginal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDBL494\u003c\/td\u003e\n\u003ctd\u003eDaewoo\u003c\/td\u003e\n\u003ctd\u003eDIP-16\u003c\/td\u003e\n\u003ctd\u003ePin-compatible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIR3M02\u003c\/td\u003e\n\u003ctd\u003eInternational Rectifier\u003c\/td\u003e\n\u003ctd\u003eDIP-16\u003c\/td\u003e\n\u003ctd\u003ePin-compatible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003chr\u003e\u003ch3\u003eWhy Choose KA7500B?\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e✅ \u003cstrong\u003eTL494 pin-compatible\u003c\/strong\u003e — direct drop-in replacement in any TL494 circuit\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003eDual error amplifiers\u003c\/strong\u003e — independent voltage and current feedback loops\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003ePush-pull outputs\u003c\/strong\u003e — drives transformer primary in push-pull\/half-bridge topologies\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003eProgrammable dead-time\u003c\/strong\u003e — prevents shoot-through in complementary switch pairs\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003eNew \u0026amp; original Samsung\/Fairchild parts\u003c\/strong\u003e — reliable quality for repair and design\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch3\u003eCompatible With \/ Works With\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eATX desktop PC power supply primary PWM stage (direct TL494 replacement)\u003c\/li\u003e\n\u003cli\u003ePush-pull 12V–220V inverter transformer driver\u003c\/li\u003e\n\u003cli\u003eDC-DC boost\/buck converter control stage\u003c\/li\u003e\n\u003cli\u003eMotor PWM speed controller\u003c\/li\u003e\n\u003cli\u003eGate drivers: IR2110, TC4420 (for large MOSFET gate capacitance)\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch3\u003eTypical Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eATX PSU Repair\u003c\/strong\u003e — replace failed TL494\/KA7500 in desktop PC power supply\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e12V–220V Inverter\u003c\/strong\u003e — push-pull driver for EI33\/EE42 transformer\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDC-DC Converter\u003c\/strong\u003e — boost\/buck-boost topology control up to 300kHz\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPS Inverter Stage\u003c\/strong\u003e — sine-wave or square-wave output control\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMotor Speed Controller\u003c\/strong\u003e — variable frequency PWM for DC motors\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eQ: Is KA7500B a direct replacement for TL494CN?\u003c\/strong\u003e\u003cbr\u003eA: Yes. KA7500B is pin-for-pin compatible with TL494CN. Same DIP-16 package, identical pinout, and equivalent electrical specifications. Simply swap the IC without any circuit modification.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: How do I set the switching frequency on KA7500B?\u003c\/strong\u003e\u003cbr\u003eA: Same as TL494: connect RT between pin 6 and Vref (pin 14), CT between pin 5 and GND. Frequency ≈ 1.1 \/ (RT × CT). For 50kHz: RT=22kΩ, CT=1nF.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: What is the difference between KA7500 and KA7500B?\u003c\/strong\u003e\u003cbr\u003eA: KA7500B is the improved version with tighter reference voltage tolerance (±1% vs ±2%) and better temperature stability. KA7500B is preferred for new designs and repair.\u003c\/p\u003e\u003chr\u003e\u003ch3\u003ePackage Contents\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e5× KA7500B \/ KA7500 DIP-16 PWM Controller IC\u003c\/li\u003e\u003c\/ul\u003e","brand":"Keszoox","offers":[{"title":"Default Title","offer_id":46991482224875,"sku":"\u003cnone\u003e","price":5.64,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/1005\/8731\/files\/ka7500b-dip16-pwm-ic.webp?v=1761545296"},{"product_id":"cr6850t-dip8-flyback-pwm-controller-ic-cr6850","title":"CR6850T DIP-8 Flyback PWM Controller IC CR6850 (5-Pack)","description":"\u003ch2\u003eCR6850T DIP-8 Flyback PWM Controller IC — Green-Mode SMPS\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003eCR6850T\u003c\/strong\u003e is a highly integrated flyback PWM controller IC in a \u003cstrong\u003eDIP-8\u003c\/strong\u003e package, featuring a built-in \u003cstrong\u003e650V high-voltage MOSFET\u003c\/strong\u003e. Designed for green-mode operation, it delivers high efficiency at light loads by reducing switching frequency — ideal for chargers, adapters, and standby power supplies.\u003c\/p\u003e\u003ch3\u003eKey Specifications\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003eCR6850T\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackage\u003c\/td\u003e\n\u003ctd\u003eDIP-8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBuilt-in MOSFET\u003c\/td\u003e\n\u003ctd\u003e650V N-Channel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Frequency\u003c\/td\u003e\n\u003ctd\u003eUp to 100kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStartup Voltage\u003c\/td\u003e\n\u003ctd\u003e~18V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Mode\u003c\/td\u003e\n\u003ctd\u003eGreen-mode (frequency reduction at light load)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtections\u003c\/td\u003e\n\u003ctd\u003eOVP, OCP, OTP, SCP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStandby Power\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;30mW typical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuantity\u003c\/td\u003e\n\u003ctd\u003e5 pieces\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eWhy Choose CR6850T?\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegrated 650V MOSFET\u003c\/strong\u003e — Reduces BOM count and PCB area vs. discrete solutions\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGreen-Mode Operation\u003c\/strong\u003e — Meets ErP\/Energy Star standby power requirements\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComprehensive Protection\u003c\/strong\u003e — OVP, OCP, OTP, and short-circuit protection for robust designs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDIP-8 Package\u003c\/strong\u003e — Easy through-hole repair and prototyping\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrop-in Compatible\u003c\/strong\u003e — Replaces CR6842, CR6853 in many charger designs\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTypical Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMobile phone charger and USB adapter repair\/design\u003c\/li\u003e\n\u003cli\u003eLED driver power supplies\u003c\/li\u003e\n\u003cli\u003eStandby power supply for TVs and set-top boxes\u003c\/li\u003e\n\u003cli\u003e5V\/12V flyback SMPS for embedded systems\u003c\/li\u003e\n\u003cli\u003eLow-power AC-DC converter modules\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eQ: What’s the difference between CR6850T and CR6850?\u003c\/strong\u003e\u003cbr\u003eA: CR6850T is the standard DIP-8 variant. Electrically equivalent; “T” denotes tape packaging for the original reel.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Can CR6850T replace CR6842?\u003c\/strong\u003e\u003cbr\u003eA: In many charger circuits yes, but verify startup voltage and frequency settings as they differ slightly.\u003c\/p\u003e\u003ch3\u003ePackage Contents\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e5× CR6850T DIP-8 Flyback PWM Controller IC\u003c\/li\u003e\u003c\/ul\u003e","brand":"Keszoox","offers":[{"title":"Default Title","offer_id":46991484420331,"sku":"\u003cnone\u003e","price":6.6,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/1005\/8731\/files\/cr6850t-dip8-power-ic.webp?v=1761543966"},{"product_id":"tl494cd-sop16-pwm-controller-ic-tl494-smd","title":"TL494CD SOP-16 PWM Controller IC TL494 SMD (5-Pack)","description":"\u003ch2\u003eTL494CD SOP-16 PWM Controller IC — Dual Output, 300kHz\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003eTL494CD\u003c\/strong\u003e is the surface-mount (SOP-16) version of the classic \u003cstrong\u003eTL494\u003c\/strong\u003e fixed-frequency PWM controller IC. With a wide supply range of \u003cstrong\u003e7V–41V\u003c\/strong\u003e, dual output transistors, and a programmable oscillator up to \u003cstrong\u003e300kHz\u003c\/strong\u003e, it remains the industry standard for push-pull, half-bridge, and full-bridge SMPS designs.\u003c\/p\u003e\u003ch3\u003eKey Specifications\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003eTL494CD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackage\u003c\/td\u003e\n\u003ctd\u003eSOP-16 (SMD)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupply Voltage\u003c\/td\u003e\n\u003ctd\u003e7V – 41V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOscillator Frequency\u003c\/td\u003e\n\u003ctd\u003e1kHz – 300kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Configuration\u003c\/td\u003e\n\u003ctd\u003eDual NPN transistors (push-pull or parallel)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Current (each)\u003c\/td\u003e\n\u003ctd\u003e200mA sink\/source\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReference Voltage\u003c\/td\u003e\n\u003ctd\u003e5V ±1%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eError Amplifiers\u003c\/td\u003e\n\u003ctd\u003e2 (voltage feedback + current limit)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDead-Time Control\u003c\/td\u003e\n\u003ctd\u003eProgrammable via DTC pin\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuantity\u003c\/td\u003e\n\u003ctd\u003e5 pieces\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eWhy Choose TL494CD?\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndustry Standard\u003c\/strong\u003e — Decades of proven reliability in SMPS and power supply designs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual Error Amplifiers\u003c\/strong\u003e — Independent voltage feedback and current limiting in one IC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlexible Output Modes\u003c\/strong\u003e — Push-pull (180° phase shift) or parallel (single-ended) output\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProgrammable Dead Time\u003c\/strong\u003e — Prevents shoot-through in bridge topologies\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSOP-16 SMD\u003c\/strong\u003e — Compact footprint vs. DIP-16, ideal for modern PCB designs\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTypical Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003ePush-pull and half-bridge SMPS (ATX power supplies, DC-DC converters)\u003c\/li\u003e\n\u003cli\u003eMotor speed controllers (PWM-based DC motor drives)\u003c\/li\u003e\n\u003cli\u003eBattery charger controllers\u003c\/li\u003e\n\u003cli\u003eInverter and UPS control circuits\u003c\/li\u003e\n\u003cli\u003eAdjustable bench power supply controllers\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCompatible With\u003c\/h3\u003e\u003cp\u003ePin-compatible with TL494CN (DIP-16), KA7500C, SG3524 (similar function). Works with IR2110, IR2113 gate drivers in bridge topologies.\u003c\/p\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eQ: What’s the difference between TL494CD and TL494CN?\u003c\/strong\u003e\u003cbr\u003eA: TL494CD is SOP-16 (SMD); TL494CN is DIP-16 (through-hole). Electrically identical.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: How do I set the switching frequency?\u003c\/strong\u003e\u003cbr\u003eA: f = 1.1 \/ (RT × CT). Use RT = 10kΩ and CT = 0.01μF for ~11kHz, or adjust for your target frequency.\u003c\/p\u003e\u003ch3\u003ePackage Contents\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e5× TL494CD SOP-16 PWM Controller IC\u003c\/li\u003e\u003c\/ul\u003e","brand":"Keszoox","offers":[{"title":"Default Title","offer_id":46991484748011,"sku":"\u003cnone\u003e","price":5.68,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/1005\/8731\/files\/tl494cd-sop16-pwm-ic.webp?v=1761543638"},{"product_id":"uc3842-sop8-current-mode-pwm-controller-ic-smd","title":"UC3842A\/B SOP-8 Current-Mode PWM Controller IC UC3842 SMD (5-Pack)","description":"\u003ch2\u003eUC3842A\/B SOP-8 Current-Mode PWM Controller IC — 500kHz\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003eUC3842\u003c\/strong\u003e is a high-performance current-mode PWM controller IC in a compact \u003cstrong\u003eSOP-8\u003c\/strong\u003e surface-mount package. With a \u003cstrong\u003e500kHz\u003c\/strong\u003e maximum switching frequency, \u003cstrong\u003e1A peak gate drive\u003c\/strong\u003e, and built-in UVLO (undervoltage lockout), it is the go-to controller for single-ended flyback and forward converter designs in SMPS repair and new designs alike.\u003c\/p\u003e\u003ch3\u003eKey Specifications\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003eUC3842A \/ UC3842B\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackage\u003c\/td\u003e\n\u003ctd\u003eSOP-8 (SMD)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupply Voltage (VCC)\u003c\/td\u003e\n\u003ctd\u003e10V – 30V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUVLO Start Threshold\u003c\/td\u003e\n\u003ctd\u003e16V (UC3842A) \/ 16V (UC3842B)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUVLO Stop Threshold\u003c\/td\u003e\n\u003ctd\u003e10V (UC3842A) \/ 10V (UC3842B)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Oscillator Frequency\u003c\/td\u003e\n\u003ctd\u003e500kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGate Drive Output\u003c\/td\u003e\n\u003ctd\u003e1A peak source\/sink\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReference Voltage\u003c\/td\u003e\n\u003ctd\u003e5V ±1%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent Sense Input\u003c\/td\u003e\n\u003ctd\u003e1V threshold\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuantity\u003c\/td\u003e\n\u003ctd\u003e5 pieces\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eUC3842A vs UC3842B\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eUC3842A\u003c\/th\u003e\n\u003cth\u003eUC3842B\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUVLO Hysteresis\u003c\/td\u003e\n\u003ctd\u003e6V\u003c\/td\u003e\n\u003ctd\u003e6V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Duty Cycle\u003c\/td\u003e\n\u003ctd\u003e100%\u003c\/td\u003e\n\u003ctd\u003e100%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemp Range\u003c\/td\u003e\n\u003ctd\u003e0°C to +70°C\u003c\/td\u003e\n\u003ctd\u003e−40°C to +85°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eWhy Choose UC3842?\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCurrent-Mode Control\u003c\/strong\u003e — Inherent cycle-by-cycle current limiting for robust protection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1A Gate Drive\u003c\/strong\u003e — Directly drives power MOSFETs without external buffer\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e500kHz Operation\u003c\/strong\u003e — Enables smaller transformer and filter components\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuilt-in UVLO\u003c\/strong\u003e — Prevents operation below safe supply voltage\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndustry Standard\u003c\/strong\u003e — Compatible with UC2842, UC1842, KA3842, NCP3842\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTypical Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eFlyback SMPS for chargers, adapters, and LED drivers\u003c\/li\u003e\n\u003cli\u003eForward converter power supplies\u003c\/li\u003e\n\u003cli\u003eATX power supply repair (common UC3842 failure point)\u003c\/li\u003e\n\u003cli\u003eDC-DC converter modules\u003c\/li\u003e\n\u003cli\u003eIndustrial power supply design\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eQ: What’s the difference between UC3842 and UC3843?\u003c\/strong\u003e\u003cbr\u003eA: UC3843 has a lower UVLO threshold (8.5V start \/ 7.6V stop) and is better for low-voltage bus applications. UC3842 suits higher-voltage offline supplies.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Can UC3842 SOP-8 replace the DIP-8 version?\u003c\/strong\u003e\u003cbr\u003eA: Electrically yes, but requires SMD PCB footprint. Use a SOP-8 to DIP-8 adapter for through-hole board repair.\u003c\/p\u003e\u003ch3\u003ePackage Contents\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e5× UC3842A\/B SOP-8 Current-Mode PWM Controller IC\u003c\/li\u003e\u003c\/ul\u003e","brand":"Keszoox","offers":[{"title":"Default Title","offer_id":46991484846315,"sku":"\u003cnone\u003e","price":6.28,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/1005\/8731\/files\/uc3842-sop8-pwm-ic.webp?v=1761543596"},{"product_id":"ob2263mp-sot23-6-green-mode-pwm-controller-ic","title":"OB2263MP SOT-23-6 Green-Mode PWM Controller IC OB2263 (5-Pack)","description":"\u003ch2\u003eOB2263MP SOT-23-6 Green-Mode PWM Controller IC — Built-in 700V MOSFET\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003eOB2263MP\u003c\/strong\u003e is a highly integrated green-mode flyback PWM controller from On-Bright Electronics in a compact \u003cstrong\u003eSOT-23-6\u003c\/strong\u003e package. It integrates a \u003cstrong\u003e700V N-Channel power MOSFET\u003c\/strong\u003e and comprehensive protection features, enabling ultra-compact charger and adapter designs with minimal external components.\u003c\/p\u003e\u003ch3\u003eKey Specifications\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003eOB2263MP \/ OB2263AMP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackage\u003c\/td\u003e\n\u003ctd\u003eSOT-23-6 (SMD)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBuilt-in MOSFET\u003c\/td\u003e\n\u003ctd\u003e700V N-Channel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Frequency\u003c\/td\u003e\n\u003ctd\u003e65kHz typical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStartup Current\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;10μA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Mode\u003c\/td\u003e\n\u003ctd\u003eGreen-mode (frequency jitter + burst mode)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtections\u003c\/td\u003e\n\u003ctd\u003eOVP, OCP, OTP, SCP, VCC clamp\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStandby Power\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;30mW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuantity\u003c\/td\u003e\n\u003ctd\u003e5 pieces\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eWhy Choose OB2263MP?\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegrated 700V MOSFET\u003c\/strong\u003e — Eliminates external power transistor, reduces PCB area by 40%\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGreen-Mode Operation\u003c\/strong\u003e — Frequency jitter reduces EMI; burst mode cuts standby power below 30mW\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltra-Low Startup Current\u003c\/strong\u003e — \u0026lt;10μA enables high-value startup resistors for lower power loss\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull Protection Suite\u003c\/strong\u003e — OVP, OCP, OTP, and short-circuit protection for reliable field operation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSOT-23-6 Package\u003c\/strong\u003e — Extremely compact, ideal for slim charger designs\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTypical Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMobile phone and tablet charger repair\/design\u003c\/li\u003e\n\u003cli\u003eUSB wall adapter power supply\u003c\/li\u003e\n\u003cli\u003eLED driver SMPS (5W–15W range)\u003c\/li\u003e\n\u003cli\u003eStandby power supply for consumer electronics\u003c\/li\u003e\n\u003cli\u003eLow-power AC-DC flyback converter modules\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eQ: What’s the difference between OB2263MP and OB2263AMP?\u003c\/strong\u003e\u003cbr\u003eA: OB2263AMP has improved OVP threshold accuracy. Both are pin-compatible and interchangeable in most designs.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Can OB2263MP replace CR6850T?\u003c\/strong\u003e\u003cbr\u003eA: They serve similar functions but have different startup voltages and frequency settings. Verify application circuit before substituting.\u003c\/p\u003e\u003ch3\u003ePackage Contents\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e5× OB2263MP SOT-23-6 Green-Mode PWM Controller IC\u003c\/li\u003e\u003c\/ul\u003e","brand":"Keszoox","offers":[{"title":"Default Title","offer_id":46991485239531,"sku":"\u003cnone\u003e","price":4.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/1005\/8731\/files\/ob2263mp-sot23-6-ic_1.webp?v=1761543444"},{"product_id":"ne555d-sop8-timer-ic-ne555-smd","title":"NE555D SOP-8 Timer IC NE555 SMD (10-Pack)","description":"\u003ch2\u003eNE555D SOP-8 Timer IC — SMD Version of the Classic NE555\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003eNE555D\u003c\/strong\u003e is the surface-mount (SOP-8) version of the legendary \u003cstrong\u003eNE555\u003c\/strong\u003e timer IC. Operating from \u003cstrong\u003e4.5V to 16V\u003c\/strong\u003e with a \u003cstrong\u003e200mA output drive\u003c\/strong\u003e, it supports astable (oscillator), monostable (one-shot), and bistable (flip-flop) configurations — making it one of the most versatile ICs ever designed.\u003c\/p\u003e\u003ch3\u003eKey Specifications\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003eNE555D\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackage\u003c\/td\u003e\n\u003ctd\u003eSOP-8 (SMD)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupply Voltage\u003c\/td\u003e\n\u003ctd\u003e4.5V – 16V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Current\u003c\/td\u003e\n\u003ctd\u003e200mA source\/sink\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTiming Range\u003c\/td\u003e\n\u003ctd\u003eμs to hours\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency Range\u003c\/td\u003e\n\u003ctd\u003eDC to 500kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDuty Cycle\u003c\/td\u003e\n\u003ctd\u003eAdjustable 50%–100% (astable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Stability\u003c\/td\u003e\n\u003ctd\u003e0.005%\/°C typical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e0°C to +70°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuantity\u003c\/td\u003e\n\u003ctd\u003e10 pieces\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eOperating Modes\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAstable\u003c\/strong\u003e — Free-running oscillator; frequency set by R1, R2, C: f = 1.44 \/ ((R1 + 2×R2) × C)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMonostable\u003c\/strong\u003e — One-shot pulse; pulse width t = 1.1 × R × C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBistable\u003c\/strong\u003e — SR flip-flop using TRIG and RESET pins\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhy Choose NE555D?\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSOP-8 SMD Package\u003c\/strong\u003e — Compact footprint for modern PCB designs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e200mA Output\u003c\/strong\u003e — Directly drives LEDs, relays, and small motors\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide Supply Range\u003c\/strong\u003e — 4.5V–16V covers 5V, 9V, and 12V systems\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProven Reliability\u003c\/strong\u003e — Billions deployed; extensive community support and reference designs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePack of 10\u003c\/strong\u003e — Ideal for prototyping, kits, and small production\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTypical Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003ePWM signal generation for motor speed control and LED dimming\u003c\/li\u003e\n\u003cli\u003eDebounce circuits for mechanical switches\u003c\/li\u003e\n\u003cli\u003eTone generators and audio oscillators\u003c\/li\u003e\n\u003cli\u003eMissing pulse detectors and watchdog timers\u003c\/li\u003e\n\u003cli\u003eVoltage-controlled oscillator (VCO) with control voltage on pin 5\u003c\/li\u003e\n\u003cli\u003eDelay timers for relay activation\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eQ: What's the difference between NE555D and NE555P?\u003c\/strong\u003e\u003cbr\u003eA: NE555D is SOP-8 (SMD); NE555P is DIP-8 (through-hole). Electrically identical.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Can NE555D run at 3.3V?\u003c\/strong\u003e\u003cbr\u003eA: No — minimum supply is 4.5V. Use TLC555 or LMC555 for 3.3V operation.\u003c\/p\u003e\u003ch3\u003ePackage Contents\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e10× NE555D SOP-8 Timer IC\u003c\/li\u003e\u003c\/ul\u003e","brand":"Keszoox","offers":[{"title":"100PCS-NE555D","offer_id":46991485436139,"sku":"14:10#100PCS-NE555D","price":13.96,"currency_code":"USD","in_stock":true},{"title":"20PCS-NE555D","offer_id":46991485468907,"sku":"14:350852#50PCS-NE555D","price":7.4,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/1005\/8731\/files\/ne555d-sop8-timer-ic.webp?v=1761540221"},{"product_id":"hs01g-sop8-green-mode-pwm-controller-ic","title":"HS01G SOP-8 Green-Mode PWM Controller IC HS01 (2-Pack)","description":"\u003ch2\u003eHS01G SOP-8 Green-Mode PWM Controller IC — Built-in 650V MOSFET\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003eHS01G\u003c\/strong\u003e is a highly integrated green-mode flyback PWM controller IC in a \u003cstrong\u003eSOP-8\u003c\/strong\u003e surface-mount package. Like the CR6850T and OB2263MP, it integrates a \u003cstrong\u003e650V high-voltage N-Channel MOSFET\u003c\/strong\u003e internally, enabling ultra-compact charger and adapter designs with minimal external components and excellent standby power performance.\u003c\/p\u003e\u003ch3\u003eKey Specifications\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003eHS01G\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackage\u003c\/td\u003e\n\u003ctd\u003eSOP-8 (SMD)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBuilt-in MOSFET\u003c\/td\u003e\n\u003ctd\u003e650V N-Channel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Mode\u003c\/td\u003e\n\u003ctd\u003eGreen-mode (frequency reduction at light load)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtections\u003c\/td\u003e\n\u003ctd\u003eOVP, OCP, OTP, SCP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStandby Power\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;30mW typical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStartup Current\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;15μA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuantity\u003c\/td\u003e\n\u003ctd\u003e2 pieces (original)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eWhy Choose HS01G?\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegrated 650V MOSFET\u003c\/strong\u003e — Reduces component count and PCB area in charger designs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGreen-Mode Operation\u003c\/strong\u003e — Meets ErP Lot 6 standby power requirements (\u0026lt;30mW)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull Protection Suite\u003c\/strong\u003e — OVP, OCP, OTP, and short-circuit protection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltra-Low Startup Current\u003c\/strong\u003e — \u0026lt;15μA enables high-value startup resistors\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOriginal Parts\u003c\/strong\u003e — Genuine HS01G for reliable repair results\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTypical Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMobile phone and USB charger repair\u003c\/li\u003e\n\u003cli\u003e5W–20W AC-DC flyback adapter design\u003c\/li\u003e\n\u003cli\u003eLED driver power supply\u003c\/li\u003e\n\u003cli\u003eStandby power supply for consumer electronics\u003c\/li\u003e\n\u003cli\u003eSet-top box and TV auxiliary power supply\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eQ: Is HS01G compatible with CR6850T or OB2263MP?\u003c\/strong\u003e\u003cbr\u003eA: They serve similar functions but have different pinouts and startup parameters. Always verify the application schematic before substituting.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: What output power can HS01G support?\u003c\/strong\u003e\u003cbr\u003eA: Typically 5W–18W in flyback topology, depending on transformer design and thermal management.\u003c\/p\u003e\u003ch3\u003ePackage Contents\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e2× HS01G SOP-8 Green-Mode PWM Controller IC (Original)\u003c\/li\u003e\u003c\/ul\u003e","brand":"Keszoox","offers":[{"title":"Default Title","offer_id":46991485993195,"sku":"\u003cnone\u003e","price":5.92,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/1005\/8731\/files\/hs01g-sop8-ic-chip.webp?v=1761539750"},{"product_id":"dc-5v-12v-ne555-time-delay-relay-module-adjustable-timer-switch","title":"DC 5V\/12V NE555 Time Delay Relay Module Adjustable Timer Switch","description":"\u003ch2\u003eDC 5V\/12V NE555 Time Delay Relay Module - Adjustable Timer Switch\u003c\/h2\u003e\u003cp\u003eThis \u003cstrong\u003eNE555-based time delay relay module\u003c\/strong\u003e provides an adjustable time delay from \u003cstrong\u003e0 to 270 seconds\u003c\/strong\u003e (depending on RC component values) before switching a \u003cstrong\u003e10A relay output\u003c\/strong\u003e. Powered from 5V or 12V DC, it is ideal for auto power-off circuits, delayed start applications, and timer-controlled switching without any microcontroller programming.\u003c\/p\u003e\u003ch3\u003eKey Specifications\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTimer IC\u003c\/td\u003e\n\u003ctd\u003eNE555\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupply Voltage\u003c\/td\u003e\n\u003ctd\u003e5V or 12V DC (select variant)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDelay Range\u003c\/td\u003e\n\u003ctd\u003e0 - 270 seconds (adjustable via potentiometer)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRelay Output\u003c\/td\u003e\n\u003ctd\u003e10A \/ 250V AC (or 10A \/ 30V DC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRelay Contacts\u003c\/td\u003e\n\u003ctd\u003eNO, NC, COM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTrigger Mode\u003c\/td\u003e\n\u003ctd\u003ePower-on delay (relay activates after set time)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAdjustment\u003c\/td\u003e\n\u003ctd\u003eOnboard potentiometer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIndicator LEDs\u003c\/td\u003e\n\u003ctd\u003ePower LED + Relay status LED\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Size\u003c\/td\u003e\n\u003ctd\u003e~60 x 40mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eOperating Modes\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower-On Delay\u003c\/strong\u003e - Apply power; relay activates after the set delay time. Use NO contact for delayed-on switching.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower-Off Delay\u003c\/strong\u003e - Relay activates immediately on power; deactivates after delay. Use NC contact for delayed-off switching.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhy Choose This Module?\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo Programming Required\u003c\/strong\u003e - Adjust delay with a screwdriver; no MCU or code needed\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e10A Relay Output\u003c\/strong\u003e - Switches mains loads (lamps, motors, appliances) up to 2500W @ 250V AC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdjustable Delay\u003c\/strong\u003e - Potentiometer sets delay from near-zero to ~270 seconds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNO\/NC\/COM Contacts\u003c\/strong\u003e - Flexible wiring for normally-open or normally-closed applications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVisual Indicators\u003c\/strong\u003e - Power and relay status LEDs for easy monitoring\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTypical Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eAuto power-off for tools and appliances after inactivity\u003c\/li\u003e\n\u003cli\u003eDelayed fan start after engine\/motor shutdown (cooling delay)\u003c\/li\u003e\n\u003cli\u003eDelayed power-on for audio amplifiers (speaker protection)\u003c\/li\u003e\n\u003cli\u003eAutomatic irrigation timer\u003c\/li\u003e\n\u003cli\u003eCar accessory delayed power-off (dome light, radio)\u003c\/li\u003e\n\u003cli\u003eIndustrial machine start delay for sequential power-up\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWiring Guide\u003c\/h3\u003e\u003cp\u003eConnect VCC\/GND to 5V or 12V supply. Wire load between COM and NO (for delayed-on) or COM and NC (for delayed-off). Adjust potentiometer clockwise to increase delay time. LED lights when relay is energized.\u003c\/p\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eQ: Can I extend the delay beyond 270 seconds?\u003c\/strong\u003e Yes - replace the timing capacitor with a larger value. Delay = 1.1 x R x C. Doubling the capacitor doubles the delay time.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Can this module switch 220V AC loads?\u003c\/strong\u003e Yes - the relay is rated 10A\/250V AC. Ensure proper insulation and safety precautions when wiring mains voltage.\u003c\/p\u003e\u003ch3\u003ePackage Contents\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e1x NE555 Time Delay Relay Module (5V or 12V version)\u003c\/li\u003e\u003c\/ul\u003e","brand":"Keszoox","offers":[{"title":"5V","offer_id":46991503524075,"sku":"14:1202#5V","price":5.12,"currency_code":"USD","in_stock":true},{"title":"12V","offer_id":46991503556843,"sku":"14:350852#12V","price":5.12,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/1005\/8731\/files\/dc-time-delay-relay-module.webp?v=1761531778"},{"product_id":"ob2263mp-sot-23-6-power-management-ic-5pcs-ob2263amp","title":"OB2263MP SOT-23-6 Power Management IC – Pack of 5 (OB2263AMP Compatible)","description":"\u003ch2\u003eOB2263MP SOT-23-6 Current-Mode PWM Controller IC (5-Pack)\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003eOB2263MP\u003c\/strong\u003e is a highly integrated current-mode PWM controller from On-Bright Electronics in a compact \u003cstrong\u003eSOT-23-6\u003c\/strong\u003e surface-mount package. Designed for \u003cstrong\u003eflyback SMPS, charger, and LED driver\u003c\/strong\u003e applications, it integrates a high-voltage startup circuit, cycle-by-cycle current limiting, and multiple protection features in a minimal footprint. Compatible with \u003cstrong\u003eOB2263AMP\u003ch3\u003eKey Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003eOB2263MP \/ OB2263AMP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackage\u003c\/td\u003e\n\u003ctd\u003eSOT-23-6 (SMD)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTopology\u003c\/td\u003e\n\u003ctd\u003eCurrent-mode PWM (flyback)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Frequency\u003c\/td\u003e\n\u003ctd\u003e~65kHz (fixed)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStartup Circuit\u003c\/td\u003e\n\u003ctd\u003eBuilt-in high-voltage startup\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVCC Range\u003c\/td\u003e\n\u003ctd\u003e8V - 30V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGate Drive Output\u003c\/td\u003e\n\u003ctd\u003eActive-high, totem-pole\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtections\u003c\/td\u003e\n\u003ctd\u003eOVP, OCP, OTP, VCC UVLO\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuantity\u003c\/td\u003e\n\u003ctd\u003e5 pieces\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch3\u003eWhy Choose OB2263MP?\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegrated Startup\u003c\/strong\u003e - Built-in high-voltage startup eliminates external startup resistors in many designs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCycle-by-Cycle OCP\u003c\/strong\u003e - Protects power MOSFET from overcurrent on every switching cycle\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSOT-23-6 Package\u003c\/strong\u003e - Ultra-compact for space-constrained charger and adapter PCBs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOB2263AMP Compatible\u003c\/strong\u003e - Direct replacement for OB2263AMP in existing designs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMultiple Protections\u003c\/strong\u003e - OVP, OCP, OTP, and UVLO for robust end-product reliability\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTypical Applications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eUSB charger and wall adapter flyback SMPS\u003c\/li\u003e\n\u003cli\u003eLED driver power supply controller\u003c\/li\u003e\n\u003cli\u003eOffline flyback converter (85-265V AC input)\u003c\/li\u003e\n\u003cli\u003eSet-top box and router auxiliary power supply\u003c\/li\u003e\n\u003cli\u003eIndustrial power supply repair and replacement\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is OB2263MP the same as OB2263AMP?\u003c\/strong\u003e Yes - OB2263AMP is an enhanced version with identical pinout and compatible electrical characteristics. OB2263MP is a direct drop-in replacement in most applications.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What MOSFET is typically used with OB2263MP?\u003c\/strong\u003e Common choices include 2N60, 5N60, or 6N60 N-Channel MOSFETs rated for the application voltage (typically 600V for offline flyback).\u003c\/p\u003e\n\u003ch3\u003ePackage Contents\u003c\/h3\u003e\n\u003cul\u003e\u003cli\u003e5x OB2263MP SOT-23-6 PWM Controller IC\u003c\/li\u003e\u003c\/ul\u003e\u003c\/strong\u003e\u003c\/p\u003e","brand":"Keszoox","offers":[{"title":"Default Title","offer_id":46991504900331,"sku":"\u003cnone\u003e","price":4.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/1005\/8731\/files\/ob2263mp-sot23-6-ic.webp?v=1761531510"},{"product_id":"str-a6351-lcd-power-management-ic-dip-8-5pcs","title":"STR-A6351 LCD Power Management IC DIP-8 – Pack of 5 (A6351A)","description":"\u003ch2\u003eSTR-A6351 LCD Power Management IC - DIP-8 (5-Pack)\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003eSTR-A6351\u003c\/strong\u003e (also marked \u003cstrong\u003eA6351A\u003c\/strong\u003e) is an integrated power management IC from Sanken Electric in a \u003cstrong\u003eDIP-8\u003c\/strong\u003e through-hole package, designed for \u003cstrong\u003eLCD monitor and TV power supply\u003c\/strong\u003e circuits. It integrates a PWM controller and power MOSFET in a single package, simplifying the design of flyback converters used in LCD display power stages.\u003c\/p\u003e\u003ch3\u003eKey Specifications\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003eSTR-A6351 \/ A6351A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackage\u003c\/td\u003e\n\u003ctd\u003eDIP-8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eIntegrated PWM controller + Power MOSFET\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTopology\u003c\/td\u003e\n\u003ctd\u003eQuasi-resonant flyback\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDrain Voltage (Max)\u003c\/td\u003e\n\u003ctd\u003e650V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Power\u003c\/td\u003e\n\u003ctd\u003eUp to ~30W (typical LCD application)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStartup Method\u003c\/td\u003e\n\u003ctd\u003eBuilt-in high-voltage startup\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtections\u003c\/td\u003e\n\u003ctd\u003eOVP, OCP, OTP, auto-restart\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuantity\u003c\/td\u003e\n\u003ctd\u003e5 pieces\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eWhy Choose STR-A6351?\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegrated MOSFET + Controller\u003c\/strong\u003e - Reduces component count vs. discrete PWM controller + external MOSFET\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuasi-Resonant Operation\u003c\/strong\u003e - Lower switching losses and EMI vs. hard-switching flyback\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e650V Drain Rating\u003c\/strong\u003e - Safe margin for 230V AC mains-connected LCD power supplies\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuilt-in Startup\u003c\/strong\u003e - No external startup resistor chain needed\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAuto-Restart Protection\u003c\/strong\u003e - Automatically recovers from fault conditions\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTypical Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eLCD monitor power supply repair (15-27 inch displays)\u003c\/li\u003e\n\u003cli\u003eLCD TV auxiliary power supply replacement\u003c\/li\u003e\n\u003cli\u003eFlyback converter design for display applications\u003c\/li\u003e\n\u003cli\u003eIndustrial display power supply\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eQ: How do I identify a failed STR-A6351?\u003c\/strong\u003e Common failure symptoms: no power output, blown fuse, shorted drain-source (measure with multimeter in diode mode). Replace with new STR-A6351 and check surrounding components (optocoupler, feedback resistors) before powering on.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Is STR-A6351 the same as A6351A?\u003c\/strong\u003e Yes - A6351A is the short marking used on the IC body. Full part number is STR-A6351.\u003c\/p\u003e\u003ch3\u003ePackage Contents\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e5x STR-A6351 DIP-8 LCD Power Management IC\u003c\/li\u003e\u003c\/ul\u003e","brand":"Keszoox","offers":[{"title":"Default Title","offer_id":46991505031403,"sku":"\u003cnone\u003e","price":7.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/1005\/8731\/files\/str-a6351-lcd-power-ic.webp?v=1761531443"},{"product_id":"uc3842-sop8-current-mode-pwm-controller-ic-5pack","title":"UC3842 SOP-8 Current-Mode PWM Controller IC UC3842A UC3842B (5-Pack)","description":"\u003ch2\u003eUC3842 SOP-8 Current-Mode PWM Controller IC (5-Pack)\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003eUC3842\u003c\/strong\u003e is a high-performance fixed-frequency current-mode PWM controller in a \u003cstrong\u003eSOP-8\u003c\/strong\u003e surface-mount package. Operating up to \u003cstrong\u003e500kHz\u003c\/strong\u003e with a \u003cstrong\u003e1A totem-pole gate drive output\u003c\/strong\u003e, it is the industry-standard controller for flyback, forward, and boost SMPS designs. The UC3842A and UC3842B variants differ only in UVLO thresholds.\u003c\/p\u003e\u003ch3\u003eKey Specifications\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003eUC3842 \/ UC3842A \/ UC3842B\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackage\u003c\/td\u003e\n\u003ctd\u003eSOP-8 (SMD)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTopology\u003c\/td\u003e\n\u003ctd\u003eCurrent-mode PWM (fixed frequency)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Oscillator Frequency\u003c\/td\u003e\n\u003ctd\u003e500kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGate Drive Output\u003c\/td\u003e\n\u003ctd\u003e1A peak (totem-pole)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDuty Cycle\u003c\/td\u003e\n\u003ctd\u003e0 - 100% (UC3842) \/ 0 - 50% (UC3843)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUVLO Thresholds\u003c\/td\u003e\n\u003ctd\u003e16V on \/ 10V off (UC3842A: 16V\/10V, UC3842B: 16V\/10V)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReference Voltage\u003c\/td\u003e\n\u003ctd\u003e5V (2% accuracy)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent Sense Input\u003c\/td\u003e\n\u003ctd\u003e1V threshold (cycle-by-cycle OCP)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e0C to +70C (UC3842) \/ -40C to +85C (UC3842A)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuantity\u003c\/td\u003e\n\u003ctd\u003e5 pieces\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eUC384x Family Comparison\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003ePart\u003c\/th\u003e\n\u003cth\u003eMax Duty Cycle\u003c\/th\u003e\n\u003cth\u003eUVLO On\/Off\u003c\/th\u003e\n\u003cth\u003eTemp Range\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUC3842\u003c\/td\u003e\n\u003ctd\u003e100%\u003c\/td\u003e\n\u003ctd\u003e16V \/ 10V\u003c\/td\u003e\n\u003ctd\u003e0 to +70C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUC3843\u003c\/td\u003e\n\u003ctd\u003e50%\u003c\/td\u003e\n\u003ctd\u003e8.5V \/ 7.6V\u003c\/td\u003e\n\u003ctd\u003e0 to +70C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUC3844\u003c\/td\u003e\n\u003ctd\u003e50%\u003c\/td\u003e\n\u003ctd\u003e16V \/ 10V\u003c\/td\u003e\n\u003ctd\u003e0 to +70C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUC3845\u003c\/td\u003e\n\u003ctd\u003e50%\u003c\/td\u003e\n\u003ctd\u003e8.5V \/ 7.6V\u003c\/td\u003e\n\u003ctd\u003e0 to +70C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eWhy Choose UC3842?\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCurrent-Mode Control\u003c\/strong\u003e - Inherent cycle-by-cycle overcurrent protection and improved line regulation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e500kHz Operation\u003c\/strong\u003e - Enables small transformer and filter components\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1A Gate Drive\u003c\/strong\u003e - Directly drives power MOSFETs up to ~10nC gate charge without external buffer\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e5V Reference\u003c\/strong\u003e - Accurate 2% reference for feedback network design\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndustry Standard\u003c\/strong\u003e - Extensive application notes and reference designs available\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTypical Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eFlyback SMPS (offline, isolated)\u003c\/li\u003e\n\u003cli\u003eForward converter power supply\u003c\/li\u003e\n\u003cli\u003eBoost PFC pre-regulator\u003c\/li\u003e\n\u003cli\u003eDC-DC converter controller\u003c\/li\u003e\n\u003cli\u003eSMPS repair replacement (common in monitors, TVs, adapters)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eQ: What is the difference between UC3842 and UC3843?\u003c\/strong\u003e UC3842 allows 0-100% duty cycle; UC3843 is limited to 0-50% (built-in duty cycle clamp). UC3843 is preferred for forward converters to prevent transformer saturation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: What MOSFET can UC3842 drive directly?\u003c\/strong\u003e MOSFETs with Qg up to ~10nC at the target switching frequency. For larger MOSFETs, add a totem-pole gate driver (TC4427, UCC27321) between UC3842 output and gate.\u003c\/p\u003e\u003ch3\u003ePackage Contents\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e5x UC3842 SOP-8 Current-Mode PWM Controller IC\u003c\/li\u003e\u003c\/ul\u003e","brand":"Keszoox","offers":[{"title":"Default Title","offer_id":46991505621227,"sku":"\u003cnone\u003e","price":6.28,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/1005\/8731\/files\/uc3842-pwm-controller-sop8.webp?v=1761531261"},{"product_id":"uc3845-sop8-current-mode-pwm-controller-ic-50-duty-cycle","title":"UC3845 SOP-8 Current-Mode PWM Controller IC 50% Duty Cycle (5-Pack)","description":"\u003ch2\u003eUC3845 SOP-8 Current-Mode PWM Controller IC - 50% Max Duty Cycle (5-Pack)\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003eUC3845\u003c\/strong\u003e is a current-mode PWM controller in a \u003cstrong\u003eSOP-8\u003c\/strong\u003e surface-mount package, identical to the UC3842 but with a \u003cstrong\u003e50% maximum duty cycle clamp\u003c\/strong\u003e and lower UVLO thresholds (\u003cstrong\u003e8.5V on \/ 7.6V off\u003c\/strong\u003e). The 50% duty cycle limit makes it ideal for \u003cstrong\u003eforward converters\u003c\/strong\u003e where transformer volt-second balance must be maintained, and the lower UVLO suits lower-voltage auxiliary supply designs.\u003c\/p\u003e\u003ch3\u003eKey Specifications\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003eUC3845\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackage\u003c\/td\u003e\n\u003ctd\u003eSOP-8 (SMD)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTopology\u003c\/td\u003e\n\u003ctd\u003eCurrent-mode PWM (fixed frequency)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Duty Cycle\u003c\/td\u003e\n\u003ctd\u003e50% (internal clamp)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Oscillator Frequency\u003c\/td\u003e\n\u003ctd\u003e500kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGate Drive Output\u003c\/td\u003e\n\u003ctd\u003e1A peak (totem-pole)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUVLO Thresholds\u003c\/td\u003e\n\u003ctd\u003e8.5V on \/ 7.6V off\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReference Voltage\u003c\/td\u003e\n\u003ctd\u003e5V (2% accuracy)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent Sense Threshold\u003c\/td\u003e\n\u003ctd\u003e1V (cycle-by-cycle OCP)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e0C to +70C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuantity\u003c\/td\u003e\n\u003ctd\u003e5 pieces\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eUC384x Family - Choose the Right Part\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003ePart\u003c\/th\u003e\n\u003cth\u003eMax Duty Cycle\u003c\/th\u003e\n\u003cth\u003eUVLO On\/Off\u003c\/th\u003e\n\u003cth\u003ePackage\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUC3842\u003c\/td\u003e\n\u003ctd\u003e100%\u003c\/td\u003e\n\u003ctd\u003e16V \/ 10V\u003c\/td\u003e\n\u003ctd\u003eDIP-8 \/ SOP-8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUC3843\u003c\/td\u003e\n\u003ctd\u003e50%\u003c\/td\u003e\n\u003ctd\u003e8.5V \/ 7.6V\u003c\/td\u003e\n\u003ctd\u003eDIP-8 \/ SOP-8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUC3844\u003c\/td\u003e\n\u003ctd\u003e50%\u003c\/td\u003e\n\u003ctd\u003e16V \/ 10V\u003c\/td\u003e\n\u003ctd\u003eDIP-8 \/ SOP-8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUC3845\u003c\/td\u003e\n\u003ctd\u003e50%\u003c\/td\u003e\n\u003ctd\u003e8.5V \/ 7.6V\u003c\/td\u003e\n\u003ctd\u003eDIP-8 \/ SOP-8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eWhy Choose UC3845?\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e50% Duty Cycle Clamp\u003c\/strong\u003e - Prevents transformer saturation in forward converter designs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow UVLO (8.5V\/7.6V)\u003c\/strong\u003e - Starts up from lower auxiliary supply voltages vs UC3842\/3844\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCurrent-Mode Control\u003c\/strong\u003e - Inherent cycle-by-cycle OCP and improved transient response\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSOP-8 SMD Package\u003c\/strong\u003e - Compact footprint for modern SMPS PCB designs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrop-in for UC3843\u003c\/strong\u003e - Same pinout and function as UC3843 (SOP-8 version)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTypical Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eSingle-ended forward converter SMPS\u003c\/li\u003e\n\u003cli\u003eDC-DC converter with 50% duty cycle limit\u003c\/li\u003e\n\u003cli\u003eFlyback converter (lower UVLO for auxiliary startup)\u003c\/li\u003e\n\u003cli\u003eSMPS repair replacement for UC3843\/UC3845\u003c\/li\u003e\n\u003cli\u003eIndustrial power supply controller\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eQ: Can UC3845 replace UC3843?\u003c\/strong\u003e Yes - UC3845 and UC3843 are electrically identical (same pinout, same UVLO, same 50% duty cycle). UC3845 is the SOP-8 SMD version; UC3843 is typically DIP-8.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Why use UC3845 instead of UC3842 for a forward converter?\u003c\/strong\u003e Forward converters require duty cycle below 50% to prevent transformer core saturation. UC3845 enforces this limit in hardware, preventing accidental saturation if the feedback loop fails.\u003c\/p\u003e\u003ch3\u003ePackage Contents\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e5x UC3845 SOP-8 Current-Mode PWM Controller IC\u003c\/li\u003e\u003c\/ul\u003e","brand":"Keszoox","offers":[{"title":"Default Title","offer_id":46991506473195,"sku":"\u003cnone\u003e","price":6.04,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/1005\/8731\/files\/uc3845-sop8-pwm-controller-smd-ic-chipset.webp?v=1761529899"},{"product_id":"uc3843-dip8-current-mode-pwm-controller-ic-50-duty-cycle","title":"UC3843 DIP-8 Current-Mode PWM Controller IC 50% Duty Cycle (5-Pack)","description":"\u003ch2\u003eUC3843 DIP-8 Current-Mode PWM Controller IC - 50% Max Duty Cycle (5-Pack)\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003eUC3843\u003c\/strong\u003e is a current-mode PWM controller in a \u003cstrong\u003eDIP-8\u003c\/strong\u003e through-hole package, featuring a \u003cstrong\u003e50% maximum duty cycle clamp\u003c\/strong\u003e and low UVLO thresholds (\u003cstrong\u003e8.5V on \/ 7.6V off\u003c\/strong\u003e). The through-hole DIP-8 package makes it ideal for prototyping, repair work, and breadboard-based SMPS development. Functionally identical to the UC3845 (SOP-8 SMD version).\u003c\/p\u003e\u003ch3\u003eKey Specifications\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003eUC3843\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackage\u003c\/td\u003e\n\u003ctd\u003eDIP-8 (through-hole)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTopology\u003c\/td\u003e\n\u003ctd\u003eCurrent-mode PWM (fixed frequency)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Duty Cycle\u003c\/td\u003e\n\u003ctd\u003e50% (internal clamp)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Oscillator Frequency\u003c\/td\u003e\n\u003ctd\u003e500kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGate Drive Output\u003c\/td\u003e\n\u003ctd\u003e1A peak (totem-pole)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUVLO Thresholds\u003c\/td\u003e\n\u003ctd\u003e8.5V on \/ 7.6V off\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReference Voltage\u003c\/td\u003e\n\u003ctd\u003e5V (2% accuracy)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent Sense Threshold\u003c\/td\u003e\n\u003ctd\u003e1V (cycle-by-cycle OCP)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e0C to +70C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuantity\u003c\/td\u003e\n\u003ctd\u003e5 pieces\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eUC3843 Pin Configuration (DIP-8)\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003ePin\u003c\/th\u003e\n\u003cth\u003eName\u003c\/th\u003e\n\u003cth\u003eFunction\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003ctd\u003eCOMP\u003c\/td\u003e\n\u003ctd\u003eError amplifier output \/ compensation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003ctd\u003eVFB\u003c\/td\u003e\n\u003ctd\u003eVoltage feedback input\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e3\u003c\/td\u003e\n\u003ctd\u003eISENSE\u003c\/td\u003e\n\u003ctd\u003eCurrent sense input (1V threshold)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003ctd\u003eRT\/CT\u003c\/td\u003e\n\u003ctd\u003eOscillator timing resistor\/capacitor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e5\u003c\/td\u003e\n\u003ctd\u003eGND\u003c\/td\u003e\n\u003ctd\u003eGround\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e6\u003c\/td\u003e\n\u003ctd\u003eOUTPUT\u003c\/td\u003e\n\u003ctd\u003eGate drive output (1A totem-pole)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e7\u003c\/td\u003e\n\u003ctd\u003eVCC\u003c\/td\u003e\n\u003ctd\u003eSupply voltage (8.5V-30V)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e8\u003c\/td\u003e\n\u003ctd\u003eVREF\u003c\/td\u003e\n\u003ctd\u003e5V reference output\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eWhy Choose UC3843?\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDIP-8 Through-Hole\u003c\/strong\u003e - Breadboard-friendly for prototyping and repair\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e50% Duty Cycle Clamp\u003c\/strong\u003e - Safe for forward converter transformer volt-second balance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow UVLO\u003c\/strong\u003e - 8.5V startup suits lower-voltage auxiliary supplies\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1A Gate Drive\u003c\/strong\u003e - Directly drives MOSFETs up to ~10nC gate charge\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndustry Standard\u003c\/strong\u003e - Widely used in SMPS repair; extensive reference designs\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTypical Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eSingle-ended forward converter SMPS\u003c\/li\u003e\n\u003cli\u003eFlyback converter with lower UVLO requirement\u003c\/li\u003e\n\u003cli\u003eDC-DC converter prototyping on breadboard\u003c\/li\u003e\n\u003cli\u003eSMPS repair replacement (monitors, adapters, industrial PSU)\u003c\/li\u003e\n\u003cli\u003eBoost converter controller\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eQ: How do I set the oscillator frequency for UC3843?\u003c\/strong\u003e Frequency = 1.72 \/ (RT x CT). For 65kHz: RT = 10k ohm, CT = 2.7nF. For 100kHz: RT = 10k ohm, CT = 1.8nF.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Can UC3843 replace UC3842 in an existing design?\u003c\/strong\u003e Only if the design operates below 50% duty cycle. UC3843 will clamp duty cycle at 50%; UC3842 allows up to 100%. Check the original design's maximum duty cycle before substituting.\u003c\/p\u003e\u003ch3\u003ePackage Contents\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e5x UC3843 DIP-8 Current-Mode PWM Controller IC\u003c\/li\u003e\u003c\/ul\u003e","brand":"Keszoox","offers":[{"title":"Default Title","offer_id":46991506505963,"sku":"\u003cnone\u003e","price":5.52,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/1005\/8731\/files\/uc3843-dip8-pwm-controller-ic-chipset.webp?v=1761529869"},{"product_id":"ne555-dip8-precision-timer-ic-monostable-astable-pwm-10pack","title":"NE555 DIP-8 Precision Timer IC — Monostable \/ Astable \/ PWM Oscillator (10-Pack)","description":"\u003ch2\u003eNE555 DIP-8 Precision Timer IC — Monostable \/ Astable \/ PWM Oscillator (10-Pack)\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003eNE555\u003c\/strong\u003e is the world’s most popular timer IC, with over one billion units sold annually. In a \u003cstrong\u003eDIP-8\u003c\/strong\u003e through-hole package, it operates from \u003cstrong\u003e4.5V to 16V\u003c\/strong\u003e and delivers a \u003cstrong\u003e200mA output\u003c\/strong\u003e capable of directly driving LEDs, relays, and small motors. Configurable in monostable (one-shot), astable (oscillator), or PWM modes with just a few external resistors and capacitors.\u003c\/p\u003e\u003ch3\u003eKey Specifications\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003eNE555 \/ LM555 \/ SA555\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackage\u003c\/td\u003e\n\u003ctd\u003eDIP-8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupply Voltage\u003c\/td\u003e\n\u003ctd\u003e4.5V – 16V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Current (Source\/Sink)\u003c\/td\u003e\n\u003ctd\u003e200mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTiming Accuracy\u003c\/td\u003e\n\u003ctd\u003e±1% (temperature stable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency Range\u003c\/td\u003e\n\u003ctd\u003e0.1Hz – 500kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTrigger Threshold\u003c\/td\u003e\n\u003ctd\u003e1\/3 VCC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReset Threshold\u003c\/td\u003e\n\u003ctd\u003e2\/3 VCC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e0°C to +70°C (NE555) \/ −55°C to +125°C (SE555)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuantity\u003c\/td\u003e\n\u003ctd\u003e10 pieces\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eOperating Modes\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eMode\u003c\/th\u003e\n\u003cth\u003eFunction\u003c\/th\u003e\n\u003cth\u003eKey Formula\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMonostable\u003c\/td\u003e\n\u003ctd\u003eOne-shot pulse on trigger\u003c\/td\u003e\n\u003ctd\u003eT = 1.1 × R × C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAstable\u003c\/td\u003e\n\u003ctd\u003eFree-running oscillator\u003c\/td\u003e\n\u003ctd\u003ef = 1.44 \/ ((R1+2×R2) × C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePWM\u003c\/td\u003e\n\u003ctd\u003eVariable duty cycle output\u003c\/td\u003e\n\u003ctd\u003eDuty = R1\/(R1+R2) × 100%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eTiming Component Calculator\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eTarget Frequency\u003c\/th\u003e\n\u003cth\u003eR1\u003c\/th\u003e\n\u003cth\u003eR2\u003c\/th\u003e\n\u003cth\u003eC\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1Hz\u003c\/td\u003e\n\u003ctd\u003e1kΩ\u003c\/td\u003e\n\u003ctd\u003e72kΩ\u003c\/td\u003e\n\u003ctd\u003e10μF\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1kHz\u003c\/td\u003e\n\u003ctd\u003e1kΩ\u003c\/td\u003e\n\u003ctd\u003e72kΩ\u003c\/td\u003e\n\u003ctd\u003e10nF\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e10kHz\u003c\/td\u003e\n\u003ctd\u003e1kΩ\u003c\/td\u003e\n\u003ctd\u003e6.2kΩ\u003c\/td\u003e\n\u003ctd\u003e10nF\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e100kHz\u003c\/td\u003e\n\u003ctd\u003e1kΩ\u003c\/td\u003e\n\u003ctd\u003e620Ω\u003c\/td\u003e\n\u003ctd\u003e10nF\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eWhy Choose NE555?\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e200mA Output\u003c\/strong\u003e — Directly drives LEDs, small relays, buzzers, and DC motors without transistor buffer\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e±1% Timing Accuracy\u003c\/strong\u003e — Temperature-stable timing for reliable delay and oscillator circuits\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide Supply Range\u003c\/strong\u003e — 4.5V–16V covers 5V, 9V, and 12V systems\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThree Operating Modes\u003c\/strong\u003e — Monostable, astable, and PWM from a single IC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndustry Classic\u003c\/strong\u003e — Extensive documentation, tutorials, and reference designs available\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTypical Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eTime delay relay (monostable: trigger → fixed output pulse)\u003c\/li\u003e\n\u003cli\u003eLED flasher and blinker (astable oscillator)\u003c\/li\u003e\n\u003cli\u003ePWM motor speed controller (astable with variable duty cycle)\u003c\/li\u003e\n\u003cli\u003eDebounce circuit for mechanical switches\u003c\/li\u003e\n\u003cli\u003eTone generator and alarm circuit\u003c\/li\u003e\n\u003cli\u003eMissing pulse detector (monostable reset by input pulses)\u003c\/li\u003e\n\u003cli\u003eVoltage-controlled oscillator (VCO) with control voltage on pin 5)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eQ: What is the difference between NE555, LM555, and SA555?\u003c\/strong\u003e\u003cbr\u003eA: Electrically identical — NE555 (Texas Instruments\/STMicro, 0–70°C), LM555 (National Semiconductor), SA555 (industrial grade, −40°C to +85°C). All are pin-compatible and interchangeable in most applications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Can NE555 generate audio tones?\u003c\/strong\u003e\u003cbr\u003eA: Yes — in astable mode, set frequency to 20Hz–20kHz audio range. Connect output to speaker via 100μF capacitor. For variable pitch, use a potentiometer for R2.\u003c\/p\u003e\u003ch3\u003ePackage Contents\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e10× NE555 DIP-8 Precision Timer IC\u003c\/li\u003e\u003c\/ul\u003e","brand":"Keszoox","offers":[{"title":"20PCS-NE555P","offer_id":46991509422315,"sku":"14:10#20PCS-NE555P","price":5.68,"currency_code":"USD","in_stock":true},{"title":"10PCS-NE555P","offer_id":46991509455083,"sku":"14:350852#10PCS-NE555P","price":4.48,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/1005\/8731\/files\/ne555-dip8-timer-ic-precision-controller.webp?v=1761364238"}],"url":"https:\/\/keszoox.com\/collections\/pwm-controllers-power-management-ics.oembed?page=2","provider":"Keszoox","version":"1.0","type":"link"}