LCR-T4 Diode Triode Capacitance Esr Meter Transistor Checking Tool

Description Specification Reviews LCD Display Transistor Tester with ESR Meter LCRT4 Description The LCR-T4 Transistor Tester is a multifunction digital component tester capable of automatically detecting and measuring transistors (NPN/PNP), diodes, triodes, MOSFETs, resistors, capacitors, inductors, and ESR (Equivalent Series Resistance). It features a clear LCD display that shows component type, pin configuration, and electrical parameters. This compact and easy-to-use tester is ideal for electronics repair, circuit troubleshooting, DIY projects, and educational use, making component identification fast and accurate. Key Specifications Display and Interface LCD Type: Graphic LCD with backlight (128×64 pixels). Backlight: Yes — improves visibility in varied lighting. Controller Uses a microcontroller (commonly an ATmega328P), which coordinates measurement, detection, and display functions. Power Supply Primary: 9 V block battery (6F22). Alternative: Two Li-ion batteries configured for ~8.4 V. Measurement Ranges Resistance: up to 50 MΩ, resolution ~0.1 Ω. Capacitance: ~25 pF up to 100 mF (100,000 µF) with ~1 pF resolution. Inductance: ~0.01 mH to 20 H. ESR (Equivalent Series Resistance): measured with capacitors (resolution varies by unit, often ~0.01 Ω). Resistance Measurement Range: up to ~50 MΩ. Performance Testing Speed: Typically ~2 seconds per test (larger capacitance measurements may take up to ~1 minute). Shutdown Current: Very low (around ~20 nA) to conserve battery. Provided Testing Current: ~6 mA typical. Physical Typical Size: ~72 mm × 62.5 mm (unit board/assembled tester). Material: PCB board (often shipped without permanent casing unless specified). Features Automatic Component Detection – Identifies component type and pinout Clear LCD Display – Easy-to-read measurement results Wide Component Support – Diodes, BJTs, MOSFETs, resistors, capacitors, inductors ESR Measurement – Tests capacitor ESR for health analysis Pinout Identification – Displays pin configuration automatically Low Power Consumption – Battery powered for portability High Accuracy Measurement – Reliable test results Compact & Portable Design – Perfect for field and bench work Package Contents 1 x LCR-T4 Transistor Tester / ESR Meter unit. Battery not included in most standard packages. Supported Components & Functions The LCR-T4 tester can automatically identify and measure a broad range of electronic parts: Passive Components Resistors Capacitors (with ESR) Inductors Semiconductors Diodes (including dual diodes) LEDs Transistors (automatic identification of NPN or PNP) MOSFETs (n-channel and p-channel) SCRs / Thyristors Voltage regulators and other semiconductors Component Characteristics Measured Resistor values and symbol detection Capacitance and ESR values Inductance values transistor gain (hFE), type, and pinout MOSFET gate threshold and gate capacitance Diode forward voltage drop and polarity Automatic Testing Component pinout detection without manual orientation. One-button operation triggers auto-test and display. Backlight and battery voltage displayed on power-up. Operational Notes One-Touch Operation: Simplifies the user experience — place component leads in the test socket, press the button, wait for measurement. Auto Power-Off: Typically present to save battery life. Component Discharge: Before testing capacitors, ensure they are fully discharged to avoid damage. ESR Measurement: Useful for evaluating capacitor health, especially in power supply circuits. Display Backlight: Aids readability in lower light conditions. Typical Use Cases Hobby Electronics Repair: Quickly identify faulty components or confirm functionality. Prototyping / Bench Testing: Rapid checks of discrete parts during design validation. Educational / Lab Work: Demonstrations of component values and semiconductor characteristics. Field Service: Portable tool for onsite diagnostics where full LCR meters aren’t available. SKU: 1908 Categories: Discrete Electronic Components, General ICs, ICs