{"product_id":"lcr-t4-transistor-tester-esr-capacitance-diode-mosfet-lcd","title":"LCR-T4 Transistor Tester Meter — ESR, Capacitance, Diode, MOSFET, LCD Display","description":"\u003ch2\u003eLCR-T4 Multi-Function Transistor \u0026amp; Component Tester — ESR, Capacitance, MOSFET, LCD\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003eLCR-T4\u003c\/strong\u003e is an automatic component identification and measurement tool that tests virtually any passive or active electronic component in seconds. Insert the component into the ZIF socket or test clips, press the button, and the \u003cstrong\u003eLCD display\u003c\/strong\u003e shows the component type, pinout, and key parameters — no manual range selection required.\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\u003eDisplay\u003c\/td\u003e\n\u003ctd\u003e128×64 LCD (ST7565 or equivalent)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupply Voltage\u003c\/td\u003e\n\u003ctd\u003e9V (6F22 battery or DC jack)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransistor Test\u003c\/td\u003e\n\u003ctd\u003eNPN, PNP (BJT) — hFE, VBE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMOSFET\/JFET Test\u003c\/td\u003e\n\u003ctd\u003eN\/P-Channel — VGS(th), Ciss\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDiode Test\u003c\/td\u003e\n\u003ctd\u003eVF, reverse breakdown voltage\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCapacitance Range\u003c\/td\u003e\n\u003ctd\u003e25pF – 100mF\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eESR Measurement\u003c\/td\u003e\n\u003ctd\u003eYes (for capacitors)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInductance Range\u003c\/td\u003e\n\u003ctd\u003e0.01mH – 20H\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResistance Range\u003c\/td\u003e\n\u003ctd\u003e0.1Ω – 50MΩ\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAuto Power-Off\u003c\/td\u003e\n\u003ctd\u003eYes (~60 seconds)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eWhat LCR-T4 Can Test\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBJT Transistors\u003c\/strong\u003e — NPN\/PNP identification, hFE (gain), VBE, pinout (B\/C\/E)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMOSFETs \u0026amp; JFETs\u003c\/strong\u003e — N\/P-Channel, gate threshold voltage VGS(th), input capacitance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiodes \u0026amp; Zener Diodes\u003c\/strong\u003e — Forward voltage, Zener breakdown voltage\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCapacitors\u003c\/strong\u003e — Capacitance (25pF–100mF) + ESR (equivalent series resistance)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInductors\u003c\/strong\u003e — Inductance value and series resistance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eResistors\u003c\/strong\u003e — 0.1Ω to 50MΩ\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThyristors (SCR) \u0026amp; TRIACs\u003c\/strong\u003e — Basic identification\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhy Choose LCR-T4?\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFully Automatic\u003c\/strong\u003e — Auto-detects component type and displays pinout; no manual mode selection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eESR Measurement\u003c\/strong\u003e — Identifies failing electrolytic capacitors by high ESR before they cause circuit failure\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePinout Display\u003c\/strong\u003e — Shows which pin is Base\/Collector\/Emitter or Gate\/Drain\/Source\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAuto Power-Off\u003c\/strong\u003e — Extends battery life with automatic shutdown after ~60 seconds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAcrylic Case Included\u003c\/strong\u003e — Protects the PCB and provides a professional appearance\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTypical Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eIdentifying unknown transistors from salvaged PCBs\u003c\/li\u003e\n\u003cli\u003eVerifying component values before soldering\u003c\/li\u003e\n\u003cli\u003eTesting electrolytic capacitors for ESR degradation\u003c\/li\u003e\n\u003cli\u003eChecking MOSFET gate threshold in power electronics repair\u003c\/li\u003e\n\u003cli\u003eElectronics lab and workshop bench tool\u003c\/li\u003e\n\u003cli\u003eTeaching component identification in STEM education\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eQ: Can LCR-T4 test SMD components?\u003c\/strong\u003e\u003cbr\u003eA: Yes — use the test clip leads (included) to probe SMD components directly on the PCB or in a component holder.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: What battery does LCR-T4 use?\u003c\/strong\u003e\u003cbr\u003eA: 9V 6F22 (PP3) battery. Some versions also accept 6–12V DC via a barrel jack.\u003c\/p\u003e\u003ch3\u003ePackage Contents\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e1× LCR-T4 Component Tester (assembled, with acrylic case)\u003c\/li\u003e\n\u003cli\u003e1× ZIF Test Socket\u003c\/li\u003e\n\u003cli\u003eTest clip leads\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Keszoox","offers":[{"title":"1set","offer_id":46991488221419,"sku":"14:366#1set","price":50.6,"currency_code":"USD","in_stock":true},{"title":"case","offer_id":46991488254187,"sku":"14:10#case","price":16.32,"currency_code":"USD","in_stock":true},{"title":"module","offer_id":46991488286955,"sku":"14:350852#module","price":32.88,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/1005\/8731\/files\/lcr-t4-transistor-tester.webp?v=1761536519","url":"https:\/\/keszoox.com\/products\/lcr-t4-transistor-tester-esr-capacitance-diode-mosfet-lcd","provider":"Keszoox","version":"1.0","type":"link"}