FNIRSI LCR-ST1 10KHz LCR Tweezer Meter - Portable SMD Tester

In this review of the FNIRSI LCR-ST1, the bottom line is that it is a compact, practical LCR tweezer meter aimed at electronics hobbyists and repair technicians who need quick, in-circuit checks of passive components. The tester shines for its portability, clear 1.14' HD color display and auto component recognition, making routine SMD work faster. It is not a laboratory reference standard, but for board-level troubleshooting and component sorting its combination of measurement range and data export capability makes it a highly useful pocket instrument.

Key Features

• Multifunction measurements: Measures resistance, capacitance, inductance and diode checks so a single tool covers the most common component tests.
• Selectable test frequencies: Three test frequencies (100 Hz, 1 kHz, 10 kHz) allow more relevant readings for different component types and circuit conditions.
• Wide measurement range: R from 10 m to 10 M, C from 1 pF to 22 mF and L from 1 uH to 10 H, which suits everything from tiny SMD parts to larger passives.
• Auto recognition and readout: The unit auto-identifies common components and displays primary and secondary parameters for faster workflow.
• Data storage and PC export: Automatically saves test records and can export via a data cable to a PC as an Excel file for logging and analysis.
• Two tweezer heads included: Pointed and hook heads make it convenient to test different package styles and hard-to-grab components.

Who It's For

The FNIRSI LCR-ST1 is best for electronics hobbyists, PCB repair technicians and students who need a portable device to quickly check and sort SMD resistors, capacitors, inductors and diodes. Its auto recognition and clear color display make repetitive testing less tedious and the data export helps keep records of parts tested.

It is less suited for users who require high-precision laboratory-grade calibration for component characterization or those who need an ergonomic grip optimized for left-handed use, as some users report the hand grip design is not ideal for left-handed operation.

Pros & Cons

Pros

• Compact and portable form factor with a bright 1.14' HD color display that improves readability.
• Good measurement coverage with three test frequencies and both 0.3 Vrms and 0.6 Vrms test voltages for more relevant component readings.
• Convenient data storage and the ability to export test records to a PC via Excel for tracking and analysis.
• Includes two tweezer heads for more flexible handling of different SMD packages.

Cons

• Mixed reports on absolute accuracy at the extreme ends of the ranges, so it may not replace a calibrated bench meter for demanding measurements.
• Hand grip design may feel awkward for left-handed users during extended use.

Specifications

Brand	FNIRSI
Test frequencies	100 Hz, 1 kHz, 10 kHz
Test voltages	0.3 Vrms, 0.6 Vrms
Resistance range	10 m to 10 M
Capacitance range	1 pF to 22 mF
Inductance range	1 uH to 10 H
Display	1.14' HD color display

Our Verdict

The FNIRSI LCR-ST1 is a strong value proposition for hobbyists and repair techs who need a portable, feature-rich tweezer LCR meter for in-circuit checks and SMD work; its auto recognition, multiple frequencies and data export make it practical for day-to-day troubleshooting, though those needing lab-grade precision should look to calibrated bench instruments.

Frequently Asked Questions

Can this meter save measurement records?
Yes. The unit can automatically save test records and transfer them to a PC as an Excel file via the included data cable.

Does it work on small SMD parts?
Yes. With two tweezer heads (pointed and hook) and ranges down to 1 pF and 10 m, it is designed for SMD testing and board-level diagnostics.

Is it accurate enough for calibration lab work?
No. While accurate for routine troubleshooting and component sorting, mixed feedback on edge-range accuracy means it should not replace a calibrated laboratory meter for precision work.