Description
LCR-T4 Graphical Transistor, Resistor, Capacitor, ESR & SCR Tester
The LCR-T4 Graphical Multifunctional Tester is a compact diagnostic tool for electronics repair, component testing and DIY projects. It can automatically identify various electronic components and display their circuit symbol and pin configuration on its graphical LCD. The tester can automatically identify NPN/PNP transistors, N/P-channel MOSFETs, JFETs, diodes and SCRs. It can also provide transistor parameters such as current gain (hFE) and FET gate threshold voltage, making component identification and troubleshooting easier. One of its key features is the built-in ESR measurement function, allowing electrolytic capacitors to be checked for equivalent series resistance. The tester supports capacitance measurement from 25pF to 100,000µF, resistance measurement from 0.1Ω to 50MΩ, and inductance measurement from 0.01mH to 20H.
The 128×64 backlit graphical LCDs measurement results clearly, including component symbols and pin configuration. With one-button testing and automatic power-off, the LCR-T4 is convenient for electronics technicians, students, hobbyists and makers.
Key Features
- Automatic electronic component identification
- Supports NPN and PNP transistors
- Supports N-channel and P-channel MOSFETs
- Supports JFETs, diodes and SCRs
- Graphical display with circuit symbols
- Displays component pin configuration
- Measures transistor hFE/current gain
- Measures FET gate threshold voltage
- Built-in ESR measurement
- ESR resolution of 0.01Ω for capacitors over 2µF
- One-button component testing
- 128×64 backlit LCD
- Automatic power-off function
- Supports resistor, capacitor and inductor measurements
- Powered by a standard 9V 6F22 battery
Technical Specifications
| Specification | Details |
|---|---|
| Model | LCR-T4 |
| Display | 128×64 Backlit Graphical LCD |
| Capacitance Range | 25pF to 100,000µF |
| Inductance Range | 0.01mH to 20H |
| Resistance Range | 0.1Ω to 50MΩ |
| ESR Measurement | Supported |
| ESR Resolution | 0.01Ω for capacitors over 2µF |
| Transistor Testing | NPN / PNP |
| MOSFET Testing | N-Channel / P-Channel |
| Other Components | JFET, Diode, SCR |
| Transistor Parameter | hFE / Current Gain |
| FET Parameter | Gate Threshold Voltage |
| Power Supply | 9V 6F22 Battery |
| Testing Method | One-Button Testing |
| Auto Power-Off | Supported |
Applications
- Electronics Repair
- Component Identification
- PCB Troubleshooting
- Capacitor ESR Testing
- Transistor Testing
- MOSFET Testing
- Diode and SCR Testing
- DIY Electronics Projects
- Electronics Education
- Maker and Hobby Projects
- Workshop Component Testing
Precautions
- Use only a suitable 9V 6F22 battery as the specified power source.
- Discharge capacitors completely before connecting them to the tester.
- Do not connect a powered circuit or live voltage source to the test terminals.
- Observe the component's polarity where applicable, especially for polarised capacitors.
- Avoid exceeding the specified measurement ranges.
- Handle electronic components carefully during testing.
- Remove components from the circuit when possible for more reliable component identification and measurement.
- The ESR measurement specification provided applies to capacitors over 2µF.