FNIRSI LCR-ST1 Smart Tweezer – LCR Meter ESR Tester SMD Component

Professional Smart Tweezer LCR Meter for SMD Component Testing

The FNIRSI LCR-ST1 is a professional smart tweezer that instantly identifies and measures electronic components with laboratory accuracy. Designed for electronics repair technicians, mobile phone repair specialists, and electronics engineers who need fast, accurate component identification without desoldering.

Comprehensive Measurement Capabilities

Capacitance Testing: 1pF to 22mF range with ±1% accuracy. Includes ESR (Equivalent Series Resistance) measurement for identifying faulty electrolytic capacitors instantly. Perfect for testing timing circuits, filters, power supplies, and coupling capacitors.

Inductance Testing: 1µH to 10H range with ±1% accuracy for most values. Displays Q factor to assess coil quality and losses. Ideal for chokes, transformers, RF coils, and switching regulators.

Resistance Testing: 10mΩ to 10MΩ range with ultra-low 2-5mΩ contact resistance between tips. Measures precision resistors, fuses, traces, and connections accurately.

Diode Testing: Forward voltage measurement from 0.1V to 16V with automatic polarity detection. Works regardless of probe orientation for standard diodes.

Smart Auto-Recognition Technology

Automatically detects whether the component is a resistor, capacitor, or inductor. Three test frequencies (100Hz, 1kHz, 10kHz) allow you to see component behavior across the spectrum. Dual test voltages (0.3V for in-circuit testing, 0.6V for isolated components) prevent activating semiconductor junctions during live circuit testing.

Professional Features for Serious Work

The 1.14″ colour screen displays 4-digit precision measurements clearly from any angle. Data logging stores measurements as CSV files for PC analysis via USB-C connectivity. Measurement freeze function holds readings for documentation. Firmware updates keep your device current.

Ultra-Portable Design

Weighing just 40g, the LCR-ST1 features an ergonomic tweezer design with sharp, precise tips that are easily sharpenable. Replaceable curved tips are included for different component access angles. The 250mAh battery provides extended operation with auto-off function for battery preservation.

Complete Professional Kit

Includes LCR-ST1 main unit with sharp probe tips, curved probe tips, USB-C charging and data cable, magnetic mounting plate for bench organization, protective carrying case with foam inserts, and English/Chinese manual with measurement examples. Ready for immediate professional use.

Real-World Applications

Ideal for SMD component identification (0201, 0402, 0603, 0805 sizes), circuit board repair without desoldering, component sorting and inventory management, quality control in manufacturing, mobile device repair, and R&D prototype development. Test components while still on the board with the low 0.3V test voltage.

Technical Specifications: 40g weight • 1.14″ colour display • 250mAh battery • USB-C charging • Auto component recognition • Multiple test frequencies • Data logging capability • CE marked and RoHS compliant

1-year warranty with lifetime technical support. Free UK delivery with no customs charges or extra taxes.