LCR-T7 ESR Meter – The automatic tester that identifies any electronic component in seconds
Have an unknown component on your workbench and aren’t sure what it is? Or perhaps you need to quickly verify if an electrolytic capacitor has failed? The LCR-T7 handles this without the need for complex settings or guesswork—simply connect the component, press the button, and view the results on the clear colour TFT screen.
Note: DO NOT connect charged capacitors. Always ensure all components are fully discharged before testing to prevent damage to the device. Recharge the battery when the voltage drops below 3V.
Why choose the LCR-T7 model? (Key Advantages):
- Automatic detection with no setup required — simply connect the component to any of the 3 terminals and the tester automatically identifies the type: transistor, capacitor, resistor, diode, or inductor.
- Real-time ESR measurement — the Equivalent Series Resistance value tells you immediately if an electrolytic capacitor is functional or aged, without needing additional equipment.
- Comprehensive component coverage — supports NPN/PNP, N/P-channel MOSFETs, IGBTs, JFETs, triacs, Zener diodes up to 30V, capacitors from 25pF to 100mF, and resistors from 0.01Ω to 50MΩ.
- 160×128 Colour TFT Display — displays the component symbol and all relevant parameters, rather than just a raw numerical value.
- IR decoding for remote controls — analyses infrared signals from TV and appliance remotes, a highly useful feature for any repair workshop.
- Rechargeable micro-USB power — no need for AAA batteries; charge it via any 5V source, including your computer’s USB port.
- Auto-calibration on every startup — ensures your measurements remain precise regardless of temperature or working conditions.
- Auto power-off included — the device switches off automatically when not in use to extend battery life between charges.
Details and Performance
Every time you power it on, the LCR-T7 performs an internal auto-calibration, meaning there is no need for manual adjustments and your results remain consistent across all your projects. The capacitor measurement range spans from 25pF (small ceramic capacitors) to 100mF (large power electrolytic capacitors), with simultaneous display of capacitance and ESR values. Inductance is measured between 0.01mH and 20H, perfect for filter coils and small transformers. The IR decoding function rounds out the package, transforming the LCR-T7 from a simple tester into a versatile tool for any electronics enthusiast or professional.
| Parameter | Value / Detail |
|---|---|
| Model | LCR-T7 |
| Display | 160 × 128 pixel colour TFT |
| Power Supply | Rechargeable Li-Ion battery (micro-USB, 5V) |
| Capacitor Measurement | 25pF – 100mF |
| ESR Measurement | Yes (displayed alongside capacitance) |
| Resistance Measurement | 0.01Ω – 50MΩ |
| Inductance Measurement | 0.01mH – 20H |
| Zener Diodes | Breakdown voltage up to 30V |
| Detected Components | NPN/PNP, MOSFET (N/P), IGBT, JFET, triac, diode, Zener diode, capacitor, resistor, inductor |
| IR Function | Infrared remote control signal decoding |
| Auto-calibration | Yes, on every startup |
| Auto power-off | Yes |
| Dimensions | 90 × 70 × 27 mm |
| Weight | 84 g |
Package Contents
- 1 × LCR-T7 Electronic Component Tester
- 1 × Set of electronic components for testing
- 1 × Micro-USB charging cable
- 3 × Test clips
Frequently Asked Questions
Can the LCR-T7 measure the ESR of electrolytic capacitors?
Yes. It displays the ESR value simultaneously with the capacitance—exactly what you need to determine if a capacitor in a power supply or motherboard is still good or requires replacement.
Do I need to remove the component from the circuit before testing?
Yes, it is highly recommended to test components out of circuit. Other components connected in parallel can interfere with the measurement and lead to inaccurate results.
Which types of transistors does it automatically identify?
It identifies bipolar NPN and PNP transistors, N and P-channel MOSFETs, IGBTs, JFETs, and triacs. It displays the pinout (base, collector, emitter or gate, drain, source) and the primary parameters for each.
Does the IR function work with any remote control?
It works with standard IR protocols used in most TV and household appliance remote controls. Compatibility may vary for proprietary or less common protocols.
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