{"title":"Crystals \u0026 Oscillators","description":"\u003ch2\u003eCrystals \u0026amp; Oscillators – Timing Components for Microcontrollers \u0026amp; Electronics\u003c\/h2\u003e\u003cp\u003eKeep your circuits running on time with our range of \u003cstrong\u003equartz crystals, crystal oscillators, ceramic resonators, and timer ICs\u003c\/strong\u003e – compatible with Arduino, AVR, PIC, and all microcontroller platforms.\u003c\/p\u003e\u003ch3\u003eWhat's in This Collection\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuartz Crystals\u003c\/strong\u003e – 8MHz, 12MHz, 16MHz, 20MHz crystals with 18pF load capacitors for Arduino and AVR microcontrollers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWatch Crystals\u003c\/strong\u003e – 32.768kHz crystals for RTC modules and low-power timing applications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHC-49S Crystal Oscillator Kits\u003c\/strong\u003e – Ceramic quartz resonator assortment kits 32.768kHz–25MHz DIP7\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCeramic Resonators\u003c\/strong\u003e – 3-pin ceramic resonators with built-in capacitors for simplified oscillator circuits\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTimer ICs\u003c\/strong\u003e – NE555\/NE555P\/NE555N DIP-8 precision timer ICs for oscillator and PWM applications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOscillator ICs\u003c\/strong\u003e – CD4047BE multi-frequency oscillator, CD4541BE programmable oscillator timer ICs\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhy Choose Keszoox?\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e✅ 20+ crystal \u0026amp; oscillator products in stock\u003c\/li\u003e\n\u003cli\u003e✅ Arduino, AVR \u0026amp; PIC compatible\u003c\/li\u003e\n\u003cli\u003e✅ Bulk quantities available – ready to ship worldwide\u003c\/li\u003e\n\u003c\/ul\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":"8mhz-crystal-with-18pf-caps","title":"8MHz Crystal with 18pF Caps","description":"\u003cp\u003e\u003cspan\u003eKit consists of a high quality 8MHz Crystal and the matching 18pF load capacitors\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003eDESCRIPTION\u003c\/h2\u003e\n\u003cp\u003eThis kit consists of a high quality 8MHz Crystal and the matching 18pF load capacitors that are required to operate it.\u003c\/p\u003e\n\u003ch2\u003ePACKAGE INCLUDES:\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e8MHz Quartz Crystal in HC-49\/US metal package\u003c\/li\u003e\n\u003cli\u003eQty 2 – 18pF Capacitors\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eKEY FEATURES OF 8MHZ CRYSTAL WITH 18PF CAPS:\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eLow profile HC-49 metal package\u003c\/li\u003e\n\u003cli\u003eHigh quality CTS Crystal with ±10PPM tolerance and ±10PPM stability\u003c\/li\u003e\n\u003cli\u003eHigh quality Kemet 18pF 5% Ceramic Multilayer Capacitors\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThese parts are thru-hole and breadboard friendly.  These are typically used to provide the clock for microprocessors.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eNotes:  \u003c\/em\u003e\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003e\u003cem\u003eNone\u003c\/em\u003e\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003chr\u003e\n\u003ch2\u003eTECHNICAL SPECIFICATIONS\u003c\/h2\u003e\n\u003ctable class=\"table table-hover\" width=\"842\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd width=\"127\"\u003e\u003cstrong\u003eFrequency\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd width=\"228\"\u003e\u003c\/td\u003e\n\u003ctd width=\"283\"\u003e8MHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"127\"\u003e\u003c\/td\u003e\n\u003ctd width=\"228\"\u003e Tolerance\u003c\/td\u003e\n\u003ctd width=\"283\"\u003e± 30ppm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"127\"\u003e\u003c\/td\u003e\n\u003ctd width=\"228\"\u003e Stability\u003c\/td\u003e\n\u003ctd width=\"283\"\u003e± 50ppm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"127\"\u003e\u003cstrong\u003eLoad Capacitance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd width=\"228\"\u003e\u003c\/td\u003e\n\u003ctd width=\"283\"\u003e18pF\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"127\"\u003e\u003cstrong\u003ePackage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd width=\"228\"\u003e\u003c\/td\u003e\n\u003ctd width=\"283\"\u003e HC-49\/US Low Profile, Thru-hole\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"127\"\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd width=\"228\"\u003eL x W x H\u003c\/td\u003e\n\u003ctd width=\"283\"\u003e11.35 x 4.65 x 3.5mm (.45 x 0.18 x 0.14″)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"127\"\u003e\u003cstrong\u003eMfr\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd width=\"228\"\u003e\u003c\/td\u003e\n\u003ctd width=\"283\"\u003eCTS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"127\"\u003e\u003cb\u003eDatasheet\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd width=\"228\"\u003e\u003c\/td\u003e\n\u003ctd width=\"283\"\u003e\u003cspan\u003e\u003ca href=\"https:\/\/ecsxtal.com\/index.php?plg=sslfixer\u0026amp;url=http%3A%2F%2Fecsxtal.com%2Fstore%2Fpdf%2Fhc-49usx.pdf\" rel=\"noopener noreferrer\" target=\"_blank\"\u003e\u003cstrong\u003eECS-80-18-4X-CKM\u003c\/strong\u003e\u003c\/a\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c!----\u003e","brand":"Keszoox","offers":[{"title":"Default Title","offer_id":45674502652139,"sku":"","price":4.22,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/1005\/8731\/files\/Crystal-8Mhz-with-18pF-Caps-1.jpg?v=1723007227"},{"product_id":"12mhz-crystal-with-18pf-caps","title":"12MHz Crystal with 18pF Caps","description":"\u003ch2\u003e12MHz Crystal Oscillator with 18pF Load Capacitors — Arduino \u0026amp; ATmega Microcontroller Clock\u003c\/h2\u003e\n\u003cp\u003eA 12MHz fundamental mode quartz crystal resonator in HC-49S (or HC-49US low-profile) package, supplied with a matched pair of 18pF ceramic load capacitors for a complete crystal oscillator circuit. The 12MHz crystal is commonly used as the clock source for ATmega microcontrollers (ATmega328P, ATmega2560, ATmega32U4) in standalone Arduino circuits, USB interface circuits (where 12MHz provides the exact USB full-speed clock), and general-purpose microcontroller clock applications. The 18pF load capacitors are matched to the crystal’s specified load capacitance for accurate frequency operation.\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\u003eFrequency\u003c\/td\u003e\n\u003ctd\u003e12.000MHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency Tolerance\u003c\/td\u003e\n\u003ctd\u003e±30ppm (at 25°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency Stability\u003c\/td\u003e\n\u003ctd\u003e±50ppm (−20°C to +70°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLoad Capacitance\u003c\/td\u003e\n\u003ctd\u003e18pF (matched capacitors included)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackage\u003c\/td\u003e\n\u003ctd\u003eHC-49S (through-hole, 2-pin)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEquivalent Series Resistance (ESR)\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;80Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDrive Level\u003c\/td\u003e\n\u003ctd\u003e100µW max\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e−20°C to +70°C\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\u003eWhy 12MHz for USB Applications?\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eUSB Speed\u003c\/th\u003e\n\u003cth\u003eBit Rate\u003c\/th\u003e\n\u003cth\u003eRequired Clock\u003c\/th\u003e\n\u003cth\u003e12MHz Suitability\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eUSB Low Speed\u003c\/td\u003e\n\u003ctd\u003e1.5Mbps\u003c\/td\u003e\n\u003ctd\u003e12MHz \/ 8 = 1.5MHz\u003c\/td\u003e\n\u003ctd\u003eYes (exact)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUSB Full Speed\u003c\/td\u003e\n\u003ctd\u003e12Mbps\u003c\/td\u003e\n\u003ctd\u003e12MHz (exact)\u003c\/td\u003e\n\u003ctd\u003eYes (exact)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUSB High Speed\u003c\/td\u003e\n\u003ctd\u003e480Mbps\u003c\/td\u003e\n\u003ctd\u003e480MHz\u003c\/td\u003e\n\u003ctd\u003eNo (requires PLL)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eCrystal Oscillator Circuit\u003c\/h3\u003e\n\u003cp\u003eConnect the crystal and load capacitors as follows for ATmega microcontrollers:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCrystal pin 1 → XTAL1 pin of ATmega + 18pF capacitor to GND\u003c\/li\u003e\n\u003cli\u003eCrystal pin 2 → XTAL2 pin of ATmega + 18pF capacitor to GND\u003c\/li\u003e\n\u003cli\u003eSet ATmega fuse bits to external crystal oscillator mode (CKSEL = 1111, SUT = 11 for 12MHz crystal)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTypical Applications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandalone Arduino:\u003c\/strong\u003e 12MHz clock source for standalone ATmega328P Arduino circuits on custom PCBs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUSB Interface:\u003c\/strong\u003e 12MHz crystal for ATmega32U4 and V-USB software USB implementations requiring exact 12MHz clock\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMicrocontroller Clock:\u003c\/strong\u003e General-purpose 12MHz clock source for PIC, AVR, STM32, and other microcontrollers supporting external crystal oscillators\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUART Baud Rate:\u003c\/strong\u003e 12MHz provides exact baud rates for 9600, 19200, 38400, 57600, and 115200 bps UART communication with zero error\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I use a 12MHz crystal instead of the standard 16MHz Arduino crystal?\u003c\/strong\u003e\u003cbr\u003eA: Yes. ATmega328P supports 12MHz external crystal. Update the Arduino board definition to 12MHz (or use a custom boards.txt entry) to ensure correct timing for delay(), millis(), and UART baud rate calculations.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Why are 18pF capacitors included?\u003c\/strong\u003e\u003cbr\u003eA: The 18pF load capacitors are required for the crystal oscillator circuit to oscillate at the specified frequency. The capacitor value must match the crystal’s specified load capacitance (CL = 18pF for this crystal). Using incorrect capacitor values will cause frequency error or oscillation failure.\u003c\/p\u003e\n\u003ch3\u003ePackage Contents\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1 × 12MHz HC-49S quartz crystal\u003c\/li\u003e\n\u003cli\u003e2 × 18pF ceramic capacitors (load capacitors)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Keszoox","offers":[{"title":"Default Title","offer_id":45674503635179,"sku":"","price":4.22,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/1005\/8731\/files\/Crystal-12Mhz-with-18pF-Caps-1.jpg?v=1723007224"},{"product_id":"16mhz-crystal-with-18pf-caps","title":"16MHz Crystal with 18pF Caps","description":"\u003cp\u003e\u003cspan\u003eKit consists of high quality 16MHz Crystal and matching 18pF load capacitors\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003eDESCRIPTION\u003c\/h2\u003e\n\u003cp\u003eThis kit consists of a high quality 16MHz Crystal and the matching 18pF load capacitors that are required to operate it.\u003c\/p\u003e\n\u003ch2\u003ePACKAGE INCLUDES:\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e16MHz Quartz Crystal HC-49 Package\u003c\/li\u003e\n\u003cli\u003eQty 2 – 18pF Capacitors\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eKEY FEATURES OF 16MHZ CRYSTAL WITH 18PF CAPS:\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eLow profile HC-49 metal package\u003c\/li\u003e\n\u003cli\u003eHigh quality ECS Crystal with ±10PPM tolerance and ±10PPM stability\u003c\/li\u003e\n\u003cli\u003eHigh quality Kemet 18pF 5% COG Ceramic Multilayer Capacitors\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThese parts are thru-hole and breadboard friendly.  These are typically used to provide the clock for microprocessors.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eNotes:  \u003c\/em\u003e\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003e\u003cem\u003eNone\u003c\/em\u003e\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003chr\u003e\n\u003ch2\u003eTECHNICAL SPECIFICATIONS\u003c\/h2\u003e\n\u003ctable class=\"table table-hover\" width=\"842\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd width=\"127\"\u003e\u003cstrong\u003eFrequency\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd width=\"228\"\u003e\u003c\/td\u003e\n\u003ctd width=\"283\"\u003e16MHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"127\"\u003e\u003c\/td\u003e\n\u003ctd width=\"228\"\u003e Tolerance\u003c\/td\u003e\n\u003ctd width=\"283\"\u003e± 10ppm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"127\"\u003e\u003c\/td\u003e\n\u003ctd width=\"228\"\u003e Stability\u003c\/td\u003e\n\u003ctd width=\"283\"\u003e± 10ppm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"127\"\u003e\u003cstrong\u003eLoad Capacitance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd width=\"228\"\u003e\u003c\/td\u003e\n\u003ctd width=\"283\"\u003e18pF\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"127\"\u003e\u003cstrong\u003ePackage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd width=\"228\"\u003e\u003c\/td\u003e\n\u003ctd width=\"283\"\u003e HC-49\/US Low Profile, Thru-hole\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"127\"\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd width=\"228\"\u003eL x W x H\u003c\/td\u003e\n\u003ctd width=\"283\"\u003e11.35 x 4.65 x 3.5mm (.45 x 0.18 x 0.14″)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"127\"\u003e\u003cstrong\u003eMfr\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd width=\"228\"\u003e\u003c\/td\u003e\n\u003ctd width=\"283\"\u003eECS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"127\"\u003e\u003cb\u003eDatasheet\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd width=\"228\"\u003e\u003c\/td\u003e\n\u003ctd width=\"283\"\u003e\u003cspan\u003e\u003ca href=\"https:\/\/ecsxtal.com\/index.php?plg=sslfixer\u0026amp;url=http%3A%2F%2Fecsxtal.com%2Fstore%2Fpdf%2Fhc-49usx.pdf\" rel=\"noopener noreferrer\" target=\"_blank\"\u003e\u003cstrong\u003eECS-160-18-4X-CKM\u003c\/strong\u003e\u003c\/a\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c!----\u003e","brand":"Keszoox","offers":[{"title":"Default Title","offer_id":45674504454379,"sku":"","price":4.22,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/1005\/8731\/files\/Crystal-16Mhz-with-18pF-Caps-1.jpg?v=1723007222"},{"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":"10pcs-cd4001be-cd4011be-cd4012be-cd4013be-cd4016be-cd4024be-cd4025be-cd4030be-cd4047be-cd4066be-dip-14-logic-ics","title":"10PCS CD4001BE \/ CD4011BE \/ CD4012BE \/ CD4013BE \/ CD4016BE \/ CD4024BE \/ CD4025BE \/ CD4030BE \/ CD4047BE \/ CD4066BE DIP-14 Logic ICs","description":"\u003ch2\u003eCD4000 Series CMOS Logic ICs — DIP-14, 10 Pieces\u003c\/h2\u003e\n\n\u003cp\u003eThe CD4000B series are classic CMOS logic integrated circuits from Texas Instruments (and compatible manufacturers), operating from 3V to 18V with extremely low quiescent current consumption. Their wide supply voltage range, high noise immunity, and compatibility with both TTL and CMOS logic levels make them indispensable for digital logic design, timer circuits, oscillators, analog switches, and educational electronics projects.\u003c\/p\u003e\n\n\u003cp\u003eThis listing offers 10-piece packs of individual CD4000B series ICs in DIP-14 packages — breadboard and PCB compatible.\u003c\/p\u003e\n\n\u003ch3\u003eAvailable ICs — Function Reference\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCD4001BE\u003c\/strong\u003e — Quad 2-input NOR gate. Universal logic gate; can implement any Boolean function. Used in oscillators, latches, and logic circuits.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCD4011BE\u003c\/strong\u003e — Quad 2-input NAND gate. Universal gate; widely used in debounce circuits, oscillators, and logic design.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCD4012BE\u003c\/strong\u003e — Dual 4-input NAND gate. For multi-input logic reduction and address decoding.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCD4013BE\u003c\/strong\u003e — Dual D-type flip-flop with set\/reset. For frequency division, data storage, shift registers, and toggle circuits.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCD4016BE\u003c\/strong\u003e — Quad bilateral analog switch. For audio signal routing, multiplexing, and sample-and-hold circuits.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCD4024BE\u003c\/strong\u003e — 7-stage ripple-carry binary counter. For frequency division (divide by 2 to 128) and timer applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCD4025BE\u003c\/strong\u003e — Triple 3-input NOR gate. For logic reduction and combinational circuits.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCD4030BE\u003c\/strong\u003e — Quad 2-input XOR gate. For parity generation, comparators, and arithmetic circuits.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCD4047BE\u003c\/strong\u003e — Monostable\/astable multivibrator. For pulse generation, one-shot timers, and square wave oscillators. Widely used in inverter circuits.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCD4066BE\u003c\/strong\u003e — Quad bilateral analog switch (improved CD4016). Lower on-resistance, better for audio and signal switching applications.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eGeneral Electrical Specifications (CD4000B Series)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSupply Voltage (VDD):\u003c\/strong\u003e 3V – 18V DC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput Voltage:\u003c\/strong\u003e 0V to VDD\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuiescent Current:\u003c\/strong\u003e \u0026lt;1µA typical at 5V (extremely low power)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput Drive Current:\u003c\/strong\u003e ±0.5mA at 5V; ±2.25mA at 10V; ±8.8mA at 15V\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNoise Immunity:\u003c\/strong\u003e 45% of VDD (high noise margin)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePropagation Delay:\u003c\/strong\u003e ~60ns at 10V (varies by device)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating Temperature:\u003c\/strong\u003e −55°C to +125°C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage:\u003c\/strong\u003e DIP-14 (0.3\" row spacing, 2.54mm pin pitch)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 10 pieces per pack\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCMOS vs. TTL: Why CD4000 Series?\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide voltage range (3–18V):\u003c\/strong\u003e Works with 3.3V, 5V, 9V, and 12V systems without level shifters\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltra-low power:\u003c\/strong\u003e Ideal for battery-powered and sleep-mode applications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh noise immunity:\u003c\/strong\u003e More robust in electrically noisy environments than TTL\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAnalog switch capability:\u003c\/strong\u003e CD4016\/CD4066 pass analog signals bidirectionally — impossible with TTL\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTypical Applications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDigital logic circuit design and prototyping\u003c\/li\u003e\n\u003cli\u003eFrequency dividers and binary counters (CD4024)\u003c\/li\u003e\n\u003cli\u003eAstable and monostable oscillators (CD4047, CD4001, CD4011)\u003c\/li\u003e\n\u003cli\u003eAnalog signal multiplexing and routing (CD4016, CD4066)\u003c\/li\u003e\n\u003cli\u003eD flip-flop latches and shift registers (CD4013)\u003c\/li\u003e\n\u003cli\u003eXOR-based parity checkers and comparators (CD4030)\u003c\/li\u003e\n\u003cli\u003eEducational electronics and university lab experiments\u003c\/li\u003e\n\u003cli\u003eInverter and UPS driver circuits (CD4047)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003ePackage Contents\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e10 × CD4000B series CMOS IC in DIP-14 package (model as selected)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Keszoox","offers":[{"title":"CD4013BE","offer_id":46985521070315,"sku":"14:175#CD4013BE","price":14.44,"currency_code":"USD","in_stock":true},{"title":"CD4012BE","offer_id":46985521103083,"sku":"14:173#CD4012BE","price":21.0,"currency_code":"USD","in_stock":true},{"title":"CD4024BE","offer_id":46985521135851,"sku":"14:496#CD4024BE","price":19.44,"currency_code":"USD","in_stock":true},{"title":"CD4016BE","offer_id":46985521168619,"sku":"14:193#CD4016BE","price":21.68,"currency_code":"USD","in_stock":true},{"title":"CD4011BE","offer_id":46985521201387,"sku":"14:94#CD4011BE","price":14.12,"currency_code":"USD","in_stock":true},{"title":"CD4001BE","offer_id":46985521234155,"sku":"14:29#CD4001BE","price":14.76,"currency_code":"USD","in_stock":true},{"title":"CD4030BE","offer_id":46985521266923,"sku":"14:771#CD4030BE","price":54.8,"currency_code":"USD","in_stock":true},{"title":"CD4025BE","offer_id":46985521299691,"sku":"14:1052#CD4025BE","price":19.12,"currency_code":"USD","in_stock":true},{"title":"CD4066BE","offer_id":46985521332459,"sku":"14:365458#CD4066BE","price":14.88,"currency_code":"USD","in_stock":true},{"title":"CD4047BE","offer_id":46985521365227,"sku":"14:1254#CD4047BE","price":18.2,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/1005\/8731\/files\/cd4001be-cd4011be-dip14-logic-ics.webp?v=1761277610"},{"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":"5pcs-ne556-dual-timer-ic-in-line-dip-14-bipolar-chip","title":"5PCS NE556 Dual Timer IC In-Line DIP-14 Bipolar Chip","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\"\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\" 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\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/div\u003e","brand":"Keszoox","offers":[{"title":"Default Title","offer_id":46985542926571,"sku":"\u003cnone\u003e","price":7.92,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/1005\/8731\/files\/ne556-dual-timer-ic-dip14.webp?v=1761200008"},{"product_id":"10pcs-cd4541be-programmable-oscillator-timer-ic-dip-14-cd4541-dip14-precision-timing-and-oscillation-chip","title":"10pcs 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":"cd4000-series-dip-16-ics-5pcs","title":"CD4000 Series DIP-16 ICs — CD4015BE CD4017BE CD4019BE CD4020BE CD4021BE CD4026BE CD4029BE CD4040BE CD4060BE CD4094BE (5PCS)","description":"\u003ch2\u003eCD4000 Series CMOS DIP-16 ICs — 5PCS Pack\u003c\/h2\u003e\u003cp\u003eThis value pack includes \u003cstrong\u003e5 pieces\u003c\/strong\u003e of CD4000 series CMOS logic ICs in DIP-16 package, covering a wide range of digital logic functions — from decade counters and shift registers to binary counters and display drivers. All ICs are manufactured to standard CMOS specifications with wide supply voltage range (3V–18V) and low power consumption.\u003c\/p\u003e\u003ch3\u003eIncluded IC Models\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003cth\u003eFunction\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eCD4015BE\u003c\/td\u003e\n\u003ctd\u003eDual 4-Stage Static Shift Register\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCD4017BE\u003c\/td\u003e\n\u003ctd\u003eDecade Counter \/ Divider with 10 Decoded Outputs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCD4019BE\u003c\/td\u003e\n\u003ctd\u003eQuad AND-OR Select Gate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCD4020BE\u003c\/td\u003e\n\u003ctd\u003e14-Stage Ripple-Carry Binary Counter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCD4021BE\u003c\/td\u003e\n\u003ctd\u003e8-Stage Static Shift Register (Parallel-to-Serial)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCD4026BE\u003c\/td\u003e\n\u003ctd\u003eDecade Counter with 7-Segment Display Outputs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCD4029BE\u003c\/td\u003e\n\u003ctd\u003ePresettable Binary\/Decade Up\/Down Counter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCD4040BE\u003c\/td\u003e\n\u003ctd\u003e12-Stage Ripple-Carry Binary Counter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCD4060BE\u003c\/td\u003e\n\u003ctd\u003e14-Stage Ripple-Carry Binary Counter + Oscillator\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCD4094BE\u003c\/td\u003e\n\u003ctd\u003e8-Stage Shift-and-Store Bus Register\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eKey Specifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage:\u003c\/strong\u003e DIP-16 (0.3\" row spacing)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSupply Voltage:\u003c\/strong\u003e 3V – 18V\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLogic Family:\u003c\/strong\u003e CMOS (4000 series)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating Temperature:\u003c\/strong\u003e -55°C to +125°C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput Drive:\u003c\/strong\u003e Compatible with TTL and CMOS logic levels\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhy Choose This Pack?\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e✅ 10 different IC functions in one order — ideal for prototyping and lab stock\u003c\/li\u003e\n\u003cli\u003e✅ Wide voltage range — works with 3.3V and 5V microcontrollers\u003c\/li\u003e\n\u003cli\u003e✅ Industry-standard DIP-16 footprint — breadboard and PCB compatible\u003c\/li\u003e\n\u003cli\u003e✅ Low quiescent current — suitable for battery-powered designs\u003c\/li\u003e\n\u003cli\u003e✅ Genuine CMOS process — high noise immunity\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTypical Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eLED chaser \/ sequencer circuits (CD4017BE)\u003c\/li\u003e\n\u003cli\u003eFrequency dividers and clock generators (CD4060BE)\u003c\/li\u003e\n\u003cli\u003e7-segment display counters (CD4026BE)\u003c\/li\u003e\n\u003cli\u003eSerial data communication shift registers (CD4015BE, CD4021BE, CD4094BE)\u003c\/li\u003e\n\u003cli\u003eBinary counting and timing circuits (CD4020BE, CD4029BE, CD4040BE)\u003c\/li\u003e\n\u003cli\u003eLogic gate selection and multiplexing (CD4019BE)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003ePackage Contents\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e5 × CD4000 series DIP-16 ICs (assorted from the 10 models listed above)\u003c\/li\u003e\u003c\/ul\u003e\u003cp\u003e\u003cem\u003eNote: The 5 pieces are selected from the 10 models listed. Specific combination may vary. Contact us if you need a specific model.\u003c\/em\u003e\u003c\/p\u003e","brand":"Keszoox","offers":[{"title":"CD4026BE","offer_id":46991427436779,"sku":"14:200004890#CD4026BE","price":11.72,"currency_code":"USD","in_stock":true},{"title":"CD4021BE","offer_id":46991427469547,"sku":"14:691#CD4021BE","price":7.92,"currency_code":"USD","in_stock":true},{"title":"CD4040BE","offer_id":46991427502315,"sku":"14:202997806#CD4040BE","price":6.32,"currency_code":"USD","in_stock":true},{"title":"CD4029BE","offer_id":46991427535083,"sku":"14:203008818#CD4029BE","price":19.28,"currency_code":"USD","in_stock":true},{"title":"CD4017BE","offer_id":46991427567851,"sku":"14:350852#CD4017BE","price":5.24,"currency_code":"USD","in_stock":true},{"title":"CD4015BE","offer_id":46991427600619,"sku":"14:1202#CD4015BE","price":7.72,"currency_code":"USD","in_stock":true},{"title":"CD4020BE","offer_id":46991427633387,"sku":"14:193#CD4020BE","price":5.72,"currency_code":"USD","in_stock":true},{"title":"CD4019BE","offer_id":46991427666155,"sku":"14:175#CD4019BE","price":15.08,"currency_code":"USD","in_stock":true},{"title":"CD4094BE","offer_id":46991427698923,"sku":"14:202693815#CD4094BE","price":5.72,"currency_code":"USD","in_stock":true},{"title":"CD4060BE","offer_id":46991427731691,"sku":"14:203027873#CD4060BE","price":5.72,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/1005\/8731\/files\/cd4000-series-dip16-ics.webp?v=1761884936"},{"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":"cd4060-dream-light-diy-electronics-kit-led-chaser-soldering-practice-gift","title":"CD4060 Dream Light DIY Electronics Kit — LED Chaser, Soldering Practice, Gift","description":"\u003ch2\u003eCD4060 Dream Light DIY Electronics Kit — LED Chaser, Soldering Practice\u003c\/h2\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eCD4060 Dream Light DIY kit\u003c\/strong\u003e is a fun through-hole soldering project that builds a multi-LED chasing light display using the CD4060 14-stage binary ripple counter IC. As you solder the components and power it on, LEDs light up in a sequential chasing pattern — making it an engaging introduction to electronics assembly and circuit operation. An ideal gift for electronics beginners, students, and hobbyists.\u003c\/p\u003e\n\n\u003ch3\u003eKit Contents\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eCD4060 14-stage binary counter IC\u003c\/li\u003e\n  \u003cli\u003eMultiple LEDs (chasing light display)\u003c\/li\u003e\n  \u003cli\u003eResistors, capacitors, and timing components\u003c\/li\u003e\n  \u003cli\u003ePCB with component silkscreen markings\u003c\/li\u003e\n  \u003cli\u003eAssembly instructions\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat You Learn\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eThrough-hole PCB soldering technique\u003c\/li\u003e\n  \u003cli\u003eBinary counter IC operation (CD4060)\u003c\/li\u003e\n  \u003cli\u003eRC oscillator timing circuit\u003c\/li\u003e\n  \u003cli\u003eLED current limiting resistor selection\u003c\/li\u003e\n  \u003cli\u003eReading component values and PCB silkscreen\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTypical Applications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eBeginner electronics soldering practice\u003c\/li\u003e\n  \u003cli\u003eBirthday and holiday gift for electronics enthusiasts\u003c\/li\u003e\n  \u003cli\u003eSchool electronics club project\u003c\/li\u003e\n  \u003cli\u003eDecorative LED display after assembly\u003c\/li\u003e\n  \u003cli\u003eIntroduction to CMOS logic ICs\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eCD4060 dream light DIY kit — LED chaser circuit, through-hole soldering practice for electronics beginners and a fun gift for hobbyists.\u003c\/p\u003e","brand":"Keszoox","offers":[{"title":"Default Title","offer_id":46991443558635,"sku":"\u003cnone\u003e","price":17.68,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/1005\/8731\/files\/cd4060-dream-light-diy-kit-electronic-birthday-gift.webp?v=1761806483"},{"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":"hc-49s-quartz-crystal-oscillator-kit-32-768khz-25mhz-through-hole-timing","title":"HC-49S Quartz Crystal Oscillator Kit — 32.768kHz to 25MHz, Through-Hole, Timing Circuits","description":"\u003ch2\u003eHC-49S Quartz Crystal Oscillator Kit — 32.768kHz to 25MHz, Through-Hole\u003c\/h2\u003e\u003cp\u003eThis HC-49S quartz crystal oscillator kit covers the most commonly used frequencies from 32.768kHz (RTC clock) to 25MHz (microcontroller system clock), in a low-profile HC-49S through-hole package. Quartz crystals provide highly accurate and stable clock references for microcontrollers, real-time clocks, UART baud rate generation, and RF carrier frequency applications. Select your required frequency from the dropdown.\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\u003eHC-49S (low-profile through-hole, 2-pin)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency Range\u003c\/td\u003e\n\u003ctd\u003e32.768kHz – 25MHz (select from dropdown)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency Tolerance\u003c\/td\u003e\n\u003ctd\u003e±30ppm (at 25°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency Stability\u003c\/td\u003e\n\u003ctd\u003e±50ppm (-20°C to +70°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLoad Capacitance\u003c\/td\u003e\n\u003ctd\u003e12pF or 20pF (frequency dependent)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDrive Level\u003c\/td\u003e\n\u003ctd\u003e100μW max\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-20°C to +70°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eCommon Frequencies and Applications\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eFrequency\u003c\/th\u003e\n\u003cth\u003eApplication\u003c\/th\u003e\n\u003cth\u003eUsed With\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e32.768kHz\u003c\/td\u003e\n\u003ctd\u003eRTC clock (32768 = 2¹⁵ Hz, divides to 1Hz)\u003c\/td\u003e\n\u003ctd\u003eDS1307, DS3231, PCF8563 RTC ICs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e4MHz\u003c\/td\u003e\n\u003ctd\u003eMCU system clock\u003c\/td\u003e\n\u003ctd\u003ePIC16F, ATmega8 at 4MHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e8MHz\u003c\/td\u003e\n\u003ctd\u003eMCU system clock\u003c\/td\u003e\n\u003ctd\u003eATmega328P (Arduino Pro Mini 3.3V), STM32\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e11.0592MHz\u003c\/td\u003e\n\u003ctd\u003eUART baud rate generation\u003c\/td\u003e\n\u003ctd\u003e8051, ATmega — exact baud rates (9600, 115200)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e12MHz\u003c\/td\u003e\n\u003ctd\u003eUSB clock, MCU clock\u003c\/td\u003e\n\u003ctd\u003eCH340G, CP2102, STM32 USB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e16MHz\u003c\/td\u003e\n\u003ctd\u003eArduino UNO\/Nano system clock\u003c\/td\u003e\n\u003ctd\u003eATmega328P (Arduino UNO, Nano, Pro Mini 5V)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e20MHz\u003c\/td\u003e\n\u003ctd\u003eHigh-speed MCU clock\u003c\/td\u003e\n\u003ctd\u003eATmega at 20MHz, PIC18F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e25MHz\u003c\/td\u003e\n\u003ctd\u003eEthernet PHY clock, high-speed MCU\u003c\/td\u003e\n\u003ctd\u003eW5500, ENC28J60 Ethernet modules\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eWhy Choose HC-49S Crystals?\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow-profile HC-49S package\u003c\/strong\u003e — shorter than HC-49U, fits low-clearance PCB designs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e±30ppm tolerance\u003c\/strong\u003e — accurate enough for UART, I²C, SPI, and RTC applications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide frequency range\u003c\/strong\u003e — one kit covers RTC (32.768kHz) through high-speed MCU (25MHz)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThrough-hole 2-pin\u003c\/strong\u003e — easy to solder on perfboard and prototype PCBs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKit value\u003c\/strong\u003e — multiple frequencies in one purchase for different projects\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eQ: What load capacitors do I need for an HC-49S crystal oscillator circuit?\u003c\/strong\u003e\u003cbr\u003eA: Most HC-49S crystals specify 12pF or 20pF load capacitance. For a Pierce oscillator (standard MCU crystal circuit), use two capacitors (C1 and C2) from each crystal pin to GND. C1 = C2 = 2 × CL − Cstray, where CL is the crystal load capacitance and Cstray ≈ 3–5pF. For CL=12pF: C1=C2=18–22pF. For CL=20pF: C1=C2=33–39pF.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Why does Arduino UNO use 16MHz and Arduino Pro Mini 3.3V use 8MHz?\u003c\/strong\u003e\u003cbr\u003eA: ATmega328P is rated for 16MHz at 5V and 8MHz at 3.3V (per Atmel datasheet). Running at 16MHz on 3.3V is technically overclocking and may cause instability. Arduino Pro Mini 3.3V uses an 8MHz crystal to stay within the safe operating range for 3.3V operation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Why is 11.0592MHz used for 8051 UART baud rate generation?\u003c\/strong\u003e\u003cbr\u003eA: 11.0592MHz divides evenly to produce standard UART baud rates (9600, 19200, 38400, 57600, 115200) with 0% error using the 8051 timer reload formula. Other frequencies (12MHz, 16MHz) produce small baud rate errors that can cause communication failures at high baud rates.\u003c\/p\u003e\u003ch3\u003ePackage Contents\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eHC-49S Quartz Crystal Oscillator(s) — frequency as selected\u003c\/li\u003e\u003c\/ul\u003e","brand":"Keszoox","offers":[{"title":"Default Title","offer_id":46991462564075,"sku":"\u003cnone\u003e","price":8.72,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/1005\/8731\/files\/hc-49s-crystal-oscillator-ceramic-quartz-resonators-kit.webp?v=1761721204"},{"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":"cd4047be-astable-monostable-multivibrator-cmos-dip14-3-15v-5pack","title":"CD4047BE Astable \/ Monostable Multivibrator CMOS IC — DIP-14, 3–15V, 50% Duty (5-Pack)","description":"\u003ch2\u003eCD4047BE Astable \/ Monostable Multivibrator CMOS IC — DIP-14, 3–15V, 50% Duty Cycle (5-Pack)\u003c\/h2\u003e\u003cp\u003eThe CD4047BE is a CMOS low-power astable\/monostable multivibrator IC in a DIP-14 package. In astable mode, it generates a continuous square wave with a precise 50% duty cycle using a single external R\/C network. In monostable mode, it generates a single output pulse of defined width triggered by a rising or falling edge. With 3–15V supply range and complementary Q\/̅Q outputs, it is widely used as the oscillator and gate driver in low-power inverter circuits, DC-AC inverters, and pulse generation 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-14 (through-hole)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupply Voltage\u003c\/td\u003e\n\u003ctd\u003e3V – 15V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Modes\u003c\/td\u003e\n\u003ctd\u003eAstable (free-running) + Monostable (one-shot)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDuty Cycle (astable)\u003c\/td\u003e\n\u003ctd\u003e50% (fixed, complementary Q\/̅Q outputs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency (astable)\u003c\/td\u003e\n\u003ctd\u003ef ≈ 1 \/ (4.4 × R × C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePulse Width (monostable)\u003c\/td\u003e\n\u003ctd\u003et ≈ 2.48 × R × C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Current\u003c\/td\u003e\n\u003ctd\u003e±1mA (CMOS, low drive)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-55°C to +125°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\u003eCD4047 vs NE555 vs CD4047 — Oscillator Comparison\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eCD4047BE\u003c\/th\u003e\n\u003cth\u003eNE555 (astable)\u003c\/th\u003e\n\u003cth\u003eCD4060\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDuty cycle\u003c\/td\u003e\n\u003ctd\u003eFixed 50%\u003c\/td\u003e\n\u003ctd\u003eAdjustable (\u0026gt;50%)\u003c\/td\u003e\n\u003ctd\u003e50% (with divider)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eComplementary outputs\u003c\/td\u003e\n\u003ctd\u003eYes (Q + ̅Q)\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupply voltage\u003c\/td\u003e\n\u003ctd\u003e3–15V\u003c\/td\u003e\n\u003ctd\u003e4.5–15V\u003c\/td\u003e\n\u003ctd\u003e3–15V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBest for\u003c\/td\u003e\n\u003ctd\u003e50% duty inverter driver, push-pull oscillator\u003c\/td\u003e\n\u003ctd\u003eAdjustable duty PWM, timer\u003c\/td\u003e\n\u003ctd\u003eFrequency divider chain\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eWhy Choose CD4047BE?\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFixed 50% duty cycle\u003c\/strong\u003e — essential for push-pull and half-bridge inverter topologies that require equal on-time for both switches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplementary Q\/̅Q outputs\u003c\/strong\u003e — directly drives both sides of a push-pull transformer driver without additional logic\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3–15V supply\u003c\/strong\u003e — works from 3V battery to 12V\/15V supply\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBoth astable and monostable\u003c\/strong\u003e — one IC covers oscillator and one-shot timer applications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e5-pack value\u003c\/strong\u003e — sufficient for multiple inverter and 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\u003eDC-AC inverter oscillator\u003c\/strong\u003e: CD4047BE astable mode at 50Hz (R=47kΩ, C=100nF) drives push-pull MOSFET stage (IRF540N) for 12V→220V inverter\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHalf-bridge inverter driver\u003c\/strong\u003e: Q and ̅Q outputs drive two MOSFETs\/IGBTs in complementary switching\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltrasonic transducer driver\u003c\/strong\u003e: 40kHz astable oscillator for ultrasonic cleaner or distance sensor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMonostable pulse generator\u003c\/strong\u003e: One-shot pulse for debounce, delay, or trigger circuits\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrequency generator\u003c\/strong\u003e: Adjustable frequency square wave from audio (20Hz) to ~500kHz\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eQ: How do I calculate R and C for a 50Hz inverter oscillator with CD4047?\u003c\/strong\u003e\u003cbr\u003eA: In astable mode: f = 1 \/ (4.4 × R × C). For f=50Hz: R × C = 1 \/ (4.4 × 50) = 0.00454. Choose C=100nF (0.1μF), then R = 0.00454 \/ 0.0000001 = 45.4kΩ. Use 47kΩ standard value for ~48Hz, or 43kΩ for ~52Hz. Fine-tune with a trimmer potentiometer in series with R.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Can CD4047BE directly drive MOSFET gates for an inverter?\u003c\/strong\u003e\u003cbr\u003eA: CD4047BE output current is only ~1mA (CMOS), insufficient to drive MOSFET gates directly at high frequency. Use a gate driver IC (IR2104S, TC4420, UCC27524) or a totem-pole buffer (two BC547\/BC557 transistors) between CD4047 outputs and MOSFET gates. For low-frequency (50–60Hz) inverters with small MOSFETs (\u0026lt;10nC gate charge), direct drive may work at reduced switching speed.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: What is the maximum frequency for CD4047BE?\u003c\/strong\u003e\u003cbr\u003eA: CD4047BE can oscillate up to approximately 1–2MHz at 15V supply. At 5V, maximum reliable frequency is ~500kHz. For audio and ultrasonic frequencies (20Hz–100kHz), CD4047BE is fully adequate. For higher frequencies, use a dedicated oscillator IC (74HC14 RC oscillator, Si5351 PLL).\u003c\/p\u003e\u003ch3\u003ePackage Contents\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e5× CD4047BE Astable\/Monostable Multivibrator CMOS IC (DIP-14)\u003c\/li\u003e\u003c\/ul\u003e","brand":"Keszoox","offers":[{"title":"Default Title","offer_id":46991467020523,"sku":"\u003cnone\u003e","price":9.16,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/1005\/8731\/files\/cd4047be-dip14-logic-ic-multi-frequency-oscillator.webp?v=1761719215"},{"product_id":"cd4060be-cd4060bn-cmos-14-stage-ripple-counter-oscillator-dip16-5pack","title":"CD4060BE \/ CD4060BN CMOS 14-Stage Ripple Counter with Oscillator — DIP-16 (5-Pack)","description":"\u003ch2\u003eCD4060BE \/ CD4060BN — CMOS 14-Stage Binary Ripple Counter with Oscillator, DIP-16\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003eCD4060\u003c\/strong\u003e (marked \u003cstrong\u003eCD4060BE\u003c\/strong\u003e or \u003cstrong\u003eCD4060BN\u003c\/strong\u003e) is a \u003cstrong\u003eCMOS 14-stage binary ripple counter\u003c\/strong\u003e with a built-in \u003cstrong\u003eoscillator\/clock generator\u003c\/strong\u003e in DIP-16 through-hole package. The integrated oscillator accepts an external RC or crystal network, making it a complete \u003cstrong\u003eself-contained timer and frequency divider\u003c\/strong\u003e — no external clock source needed. Operating from \u003cstrong\u003e3V to 15V\u003c\/strong\u003e, it divides the oscillator frequency by powers of 2 (up to 2^14 = 16,384). Each pack contains \u003cstrong\u003e5 pieces\u003c\/strong\u003e.\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 Number\u003c\/td\u003e\n\u003ctd\u003eCD4060BE \/ CD4060BN\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackage\u003c\/td\u003e\n\u003ctd\u003eDIP-16 (Through-Hole)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFunction\u003c\/td\u003e\n\u003ctd\u003e14-Stage Binary Ripple Counter + Oscillator\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCounter Stages\u003c\/td\u003e\n\u003ctd\u003e14 (Q3-Q13 outputs available)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOscillator\u003c\/td\u003e\n\u003ctd\u003eBuilt-in (RC or crystal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupply Voltage\u003c\/td\u003e\n\u003ctd\u003e3V – 15V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReset\u003c\/td\u003e\n\u003ctd\u003eYes (active HIGH)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Clock Frequency\u003c\/td\u003e\n\u003ctd\u003e~3MHz @ 5V, ~12MHz @ 10V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLogic Family\u003c\/td\u003e\n\u003ctd\u003eCMOS (CD4000 series)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-55 to +125 degrees C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCondition\u003c\/td\u003e\n\u003ctd\u003eNew, Original\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\/tbody\u003e\n\u003c\/table\u003e\u003chr\u003e\u003ch3\u003eAvailable Output Stages\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eOutput\u003c\/th\u003e\n\u003cth\u003eDivision Ratio\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\u003eQ3\u003c\/td\u003e\n\u003ctd\u003eDivide by 8\u003c\/td\u003e\n\u003ctd\u003eFast sub-division\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQ4\u003c\/td\u003e\n\u003ctd\u003eDivide by 16\u003c\/td\u003e\n\u003ctd\u003e-\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQ5\u003c\/td\u003e\n\u003ctd\u003eDivide by 32\u003c\/td\u003e\n\u003ctd\u003e-\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQ6\u003c\/td\u003e\n\u003ctd\u003eDivide by 64\u003c\/td\u003e\n\u003ctd\u003e-\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQ7\u003c\/td\u003e\n\u003ctd\u003eDivide by 128\u003c\/td\u003e\n\u003ctd\u003e-\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQ8\u003c\/td\u003e\n\u003ctd\u003eDivide by 256\u003c\/td\u003e\n\u003ctd\u003e1Hz from 256Hz oscillator\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQ9\u003c\/td\u003e\n\u003ctd\u003eDivide by 512\u003c\/td\u003e\n\u003ctd\u003e-\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQ10\u003c\/td\u003e\n\u003ctd\u003eDivide by 1024\u003c\/td\u003e\n\u003ctd\u003e1Hz from 1kHz oscillator\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQ12\u003c\/td\u003e\n\u003ctd\u003eDivide by 4096\u003c\/td\u003e\n\u003ctd\u003e1Hz from 4.096kHz crystal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQ13\u003c\/td\u003e\n\u003ctd\u003eDivide by 8192\u003c\/td\u003e\n\u003ctd\u003e1Hz from 8.192kHz crystal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003chr\u003e\u003ch3\u003eWhy Choose CD4060?\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuilt-in oscillator\u003c\/strong\u003e — no external clock IC needed, just add RC or crystal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e14 division stages\u003c\/strong\u003e — divide by 8 to 16,384 in binary steps\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3-15V supply\u003c\/strong\u003e — works with 3.3V, 5V, 9V, and 12V systems\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDIP-16 package\u003c\/strong\u003e — breadboard-friendly, no SMD soldering required\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e5-pack value\u003c\/strong\u003e — enough for multiple timer and clock projects\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch3\u003eTypical Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLong-duration timer\u003c\/strong\u003e — divide 32.768kHz crystal to get 1Hz, then count seconds\/minutes\/hours\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrequency divider\u003c\/strong\u003e — divide oscillator frequency by binary powers for sub-frequency generation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClock generator\u003c\/strong\u003e — generate precise clock signals for digital circuits\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWatchdog timer\u003c\/strong\u003e — generate periodic reset pulses for microcontroller watchdog\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLED flasher\u003c\/strong\u003e — slow-flash LED at precise intervals from RC oscillator\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eElectronics education\u003c\/strong\u003e — teach binary counting, oscillators, and frequency division\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eQ: How do I make a 1Hz output from CD4060?\u003c\/strong\u003e\u003cbr\u003eA: Use a 32.768kHz crystal with the built-in oscillator. Q15 (divide by 32768) gives exactly 1Hz. Note: Q14 and Q15 are not available as outputs on CD4060 — use Q13 (divide by 8192) with a 8.192kHz oscillator for 1Hz, or use CD4060 + CD4040 in cascade for 32.768kHz to 1Hz.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: What is the difference between CD4060BE and CD4060BN?\u003c\/strong\u003e\u003cbr\u003eA: Both are DIP-16 through-hole packages. BE is the standard commercial temperature range (-40 to +85C), BN is an older designation. Electrically equivalent.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Can CD4060 be used with a crystal oscillator?\u003c\/strong\u003e\u003cbr\u003eA: Yes. Connect a crystal between OSC1 and OSC2 pins with appropriate load capacitors (typically 22pF). The built-in inverter amplifier sustains crystal oscillation.\u003c\/p\u003e\u003chr\u003e\u003ch3\u003ePackage Contents\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e5x CD4060BE \/ CD4060BN DIP-16 CMOS Counter IC (new, original)\u003c\/li\u003e\u003c\/ul\u003e","brand":"Keszoox","offers":[{"title":"Default Title","offer_id":46991477506283,"sku":"\u003cnone\u003e","price":6.48,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/1005\/8731\/files\/cd4060be-cd4060bn-cd4060-dip16-timer-counter-ic.webp?v=1761629092"},{"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":"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":"cd4047be-dip14-multi-frequency-oscillator-monostable-ic-5pcs","title":"CD4047BE Multi-Frequency Oscillator \/ Monostable Multivibrator IC DIP-14 – Pack of 5","description":"\u003ch2\u003eCD4047BE CMOS Multi-Frequency Oscillator \/ Monostable Multivibrator — DIP-14 (5-Pack)\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003eCD4047BE\u003c\/strong\u003e is a versatile CMOS IC that operates as either a \u003cstrong\u003efree-running astable oscillator\u003c\/strong\u003e or a \u003cstrong\u003emonostable multivibrator (one-shot)\u003c\/strong\u003e, selectable via pin configuration. With a supply range of \u003cstrong\u003e3V–15V\u003c\/strong\u003e and complementary Q\/̅Q outputs, it is widely used in inverter circuits, pulse generation, and timing 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\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003eCD4047BE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackage\u003c\/td\u003e\n\u003ctd\u003eDIP-14\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupply Voltage (VDD)\u003c\/td\u003e\n\u003ctd\u003e3V – 15V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Modes\u003c\/td\u003e\n\u003ctd\u003eAstable oscillator \/ Monostable one-shot\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutputs\u003c\/td\u003e\n\u003ctd\u003eQ and ̅Q (complementary)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTiming Components\u003c\/td\u003e\n\u003ctd\u003eExternal R + C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAstable Frequency\u003c\/td\u003e\n\u003ctd\u003ef = 1 \/ (4.4 × R × C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMonostable Pulse Width\u003c\/td\u003e\n\u003ctd\u003et = 2.48 × R × C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e−55°C to +125°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\u003eOperating Modes\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAstable Mode\u003c\/strong\u003e — Connect pin 5 (ASTABLE) high; Q and ̅Q toggle at f = 1\/(4.4×R×C). Complementary outputs give 50% duty cycle push-pull drive.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMonostable Mode\u003c\/strong\u003e — Trigger via +TRIGGER (pin 8) or −TRIGGER (pin 6); output pulse width = 2.48×R×C. Retrigger or non-retrigger selectable.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhy Choose CD4047BE?\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual-Mode Versatility\u003c\/strong\u003e — One IC covers both oscillator and one-shot timing needs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplementary Outputs\u003c\/strong\u003e — Q and ̅Q directly drive push-pull or H-bridge stages\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide Supply Range\u003c\/strong\u003e — 3V–15V suits battery and mains-derived supplies\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSimple External Components\u003c\/strong\u003e — Only one R and one C needed for timing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndustry Standard\u003c\/strong\u003e — Widely used in DIY inverter and UPS designs\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTypical Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003ePure sine wave \/ square wave inverter SPWM driver (paired with IR2110)\u003c\/li\u003e\n\u003cli\u003eDC-AC inverter oscillator stage (50Hz\/60Hz generation)\u003c\/li\u003e\n\u003cli\u003ePulse-width modulation (PWM) signal generation\u003c\/li\u003e\n\u003cli\u003eMissing pulse detector and watchdog timer\u003c\/li\u003e\n\u003cli\u003eFrequency divider and clock generation\u003c\/li\u003e\n\u003cli\u003eMonostable delay timer for relay activation\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eQ: How do I generate 50Hz for an inverter with CD4047BE?\u003c\/strong\u003e\u003cbr\u003eA: In astable mode, f = 1\/(4.4×R×C). For 50Hz: use R=100kΩ, C=45nF (or R=47kΩ, C=100nF). The ̅Q output is 180° out of phase with Q — perfect for push-pull inverter drive.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Can CD4047BE replace NE555 for oscillator applications?\u003c\/strong\u003e\u003cbr\u003eA: Yes for push-pull applications — CD4047BE provides complementary outputs that NE555 cannot. For single-ended oscillators, NE555 is simpler.\u003c\/p\u003e\u003ch3\u003ePackage Contents\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e5× CD4047BE DIP-14 Oscillator\/Monostable Multivibrator IC\u003c\/li\u003e\u003c\/ul\u003e","brand":"Keszoox","offers":[{"title":"Default Title","offer_id":46991485796587,"sku":"\u003cnone\u003e","price":9.16,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/1005\/8731\/files\/cd4047be-dip14-oscillator-ic.webp?v=1761540025"},{"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":"cd4060be-dip16-14-stage-binary-counter-oscillator-cmos-ic","title":"CD4060BE DIP-16 14-Stage Binary Counter with Oscillator CMOS IC (5-Pack)","description":"\u003ch2\u003eCD4060BE DIP-16 14-Stage Binary Counter with Built-In Oscillator CMOS IC (5-Pack)\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003eCD4060BE\u003c\/strong\u003e is a 14-stage ripple binary counter with a built-in oscillator in a \u003cstrong\u003eDIP-16\u003c\/strong\u003e through-hole package. The onboard oscillator accepts a crystal, RC network, or external clock, and the 14 counter stages divide the input frequency by powers of 2 (from \/16 to \/16384), providing multiple simultaneous frequency outputs from a single IC. Supply range: \u003cstrong\u003e3V to 18V\u003c\/strong\u003e CMOS.\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\u003eCD4060BE\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\u003eCounter Stages\u003c\/td\u003e\n\u003ctd\u003e14-stage ripple binary counter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Pins\u003c\/td\u003e\n\u003ctd\u003eQ3-Q13 (Q4, Q5, Q6 not available externally)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOscillator\u003c\/td\u003e\n\u003ctd\u003eBuilt-in (crystal, RC, or external clock)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupply Voltage\u003c\/td\u003e\n\u003ctd\u003e3V - 18V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Clock Frequency\u003c\/td\u003e\n\u003ctd\u003e~12MHz @ VDD=10V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReset Input\u003c\/td\u003e\n\u003ctd\u003eActive-high (MR pin)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-55C to +125C\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\u003eFrequency Division Table\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eOutput Pin\u003c\/th\u003e\n\u003cth\u003eDivision Ratio\u003c\/th\u003e\n\u003cth\u003eExample (32.768kHz crystal)\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQ3\u003c\/td\u003e\n\u003ctd\u003e\/16\u003c\/td\u003e\n\u003ctd\u003e2048 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQ7\u003c\/td\u003e\n\u003ctd\u003e\/256\u003c\/td\u003e\n\u003ctd\u003e128 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQ10\u003c\/td\u003e\n\u003ctd\u003e\/2048\u003c\/td\u003e\n\u003ctd\u003e16 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQ13\u003c\/td\u003e\n\u003ctd\u003e\/16384\u003c\/td\u003e\n\u003ctd\u003e2 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQ14 (if available)\u003c\/td\u003e\n\u003ctd\u003e\/32768\u003c\/td\u003e\n\u003ctd\u003e1 Hz (1 pulse\/second)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eWhy Choose CD4060BE?\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuilt-In Oscillator\u003c\/strong\u003e - No external oscillator IC needed; add crystal + 2 capacitors for stable clock\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e14 Division Stages\u003c\/strong\u003e - Multiple simultaneous frequency outputs from one IC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCrystal Oscillator Mode\u003c\/strong\u003e - 32.768kHz watch crystal gives precise 1Hz output at Q14\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRC Oscillator Mode\u003c\/strong\u003e - Simple R+C sets frequency for non-critical timing applications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide Supply Range\u003c\/strong\u003e - 3V-18V covers battery and regulated supply operation\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTypical Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eReal-time clock frequency divider (32.768kHz to 1Hz)\u003c\/li\u003e\n\u003cli\u003eLong-duration timer (divide oscillator frequency for minutes\/hours)\u003c\/li\u003e\n\u003cli\u003eCrystal oscillator + divider for microcontroller clock generation\u003c\/li\u003e\n\u003cli\u003eFrequency synthesizer building block\u003c\/li\u003e\n\u003cli\u003eBinary counter for event counting and sequencing\u003c\/li\u003e\n\u003cli\u003eLow-power sleep timer for battery-powered devices\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCrystal Oscillator Circuit\u003c\/h3\u003e\u003cp\u003eConnect 32.768kHz crystal between OSC1 (pin 11) and OSC2 (pin 10). Add 22pF capacitors from each pin to GND. Connect OSC3 (pin 9) to OSC1 via 10M ohm resistor. Q14 output = 1Hz (1 pulse per second).\u003c\/p\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eQ: Why are Q4, Q5, Q6 not available on CD4060?\u003c\/strong\u003e These stages exist internally but their outputs are not connected to external pins due to DIP-16 pin count limitations. Q3 and Q7 are the adjacent available outputs.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Can CD4060BE replace CD4060B?\u003c\/strong\u003e Yes - CD4060BE is the DIP-16 through-hole version of the CD4060B family. Electrically identical.\u003c\/p\u003e\u003ch3\u003ePackage Contents\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e5x CD4060BE DIP-16 14-Stage Binary Counter IC\u003c\/li\u003e\u003c\/ul\u003e","brand":"Keszoox","offers":[{"title":"Default Title","offer_id":46991504965867,"sku":"\u003cnone\u003e","price":6.48,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/1005\/8731\/files\/cd4060be-dip16-ic.webp?v=1761531541"},{"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"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/1005\/8731\/collections\/image_b3b91ba8-d49f-478a-8c37-568bd5dfdb2f.png?v=1776230884","url":"https:\/\/keszoox.com\/collections\/crystals-oscillators.oembed?page=2","provider":"Keszoox","version":"1.0","type":"link"}