LCR-T4 Digital Transistor Tester Why you need it Quickly identify faulty components and verify parts before installation. The LCR-T4 combines multiple test functions in one handheld tool, saving time and reducing troubleshooting complexity for electronics hobbyists and professionals. Delivers fast, reliable readings so you can diagnose circuits and confirm component values without guessing or risking damage to boards. Key benefits and what makes it stand out Broad component coverage: Tests inductors, capacitors, diodes, dual diodes, MOSFETs, transistors, SCRs, regulators, LED tubes, ESR and resistors — a single instrument for most discrete component checks. Fast and accurate: Typical measurements complete in about 2 seconds for most components. Measuring larger capacitances may take longer — up to one minute — and the device reports results precisely. Clear results: Large 128 x 64 backlit LCD provides readable measurements and identification information in varied lighting conditions. Energy efficient: Low standby current (2 mA) and an automatic shut-off feature preserve battery life and reduce downtime between uses. Easy to use: Designed for straightforward operation so both beginners and experienced technicians get consistent results without a steep learning curve. Performance and compatibility Supports the full range of functions listed above for common discrete electronic components and semiconductors. Measurement speed and ESR capability make it practical for component verification, repair, and bench testing workflows. Low standby consumption and auto power-off extend operational time and minimize maintenance. Practical use scenarios Repair technician: Rapidly test transistors, MOSFETs and diodes removed from a malfunctioning power supply to isolate faulty parts and validate replacements. Hobbyist project assembly: Verify capacitor and resistor values before soldering to prevent rework and ensure circuit behavior matches design. Small-scale electronics troubleshooting: Measure ESR and check regulators or SCRs in consumer electronics repair to speed diagnosis and reduce parts replacement cost. What you get A compact, multi-function tester (model LCR-T4) that consolidates many common component tests into one instrument, with clear display, energy-saving features, and fast, reliable measurements suited to both enthusiasts and professionals.