---
product_id: 658004847
title: "FNIRSI LCR-P1 Transistor Tester, Mosfet Transistor Capacitor Tester, SMD Electronic Component Tester, Diode Triode Zener Diode Resistance Inductance Battery Test LCR Meter MOS PNP NPN ESR Meter"
brand: "fnirsi"
price: "฿3487"
currency: THB
in_stock: true
reviews_count: 10
category: "Fnirsi"
url: https://www.desertcart.co.th/products/658004847-fnirsi-lcr-p1-transistor-tester-mosfet-transistor-capacitor-tester-smd
store_origin: TH
region: Thailand
---

# Auto-discharge anti-burn protection 1.44-inch full-color display 300mAh rechargeable battery, USB-C charging FNIRSI LCR-P1 Transistor Tester, Mosfet Transistor Capacitor Tester, SMD Electronic Component Tester, Diode Triode Zener Diode Resistance Inductance Battery Test LCR Meter MOS PNP NPN ESR Meter

**Brand:** fnirsi
**Price:** ฿3487
**Availability:** ✅ In Stock

## Summary

> ⚙️ Elevate your electronics game with the smartest tester in your pocket!

## Quick Answers

- **What is this?** FNIRSI LCR-P1 Transistor Tester, Mosfet Transistor Capacitor Tester, SMD Electronic Component Tester, Diode Triode Zener Diode Resistance Inductance Battery Test LCR Meter MOS PNP NPN ESR Meter by fnirsi
- **How much does it cost?** ฿3487 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/658004847-fnirsi-lcr-p1-transistor-tester-mosfet-transistor-capacitor-tester-smd)

## Best For

- fnirsi enthusiasts

## Why This Product

- Trusted fnirsi brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Next-Gen Safety:** Built-in auto-discharge protects your device and components from accidental damage—work confidently every time.
- • **Smart Auto-ID Tech:** Instantly detects and identifies pins & specs of transistors, MOSFETs, capacitors, and more—boosting your diagnostic speed.
- • **Infrared Protocol Analysis:** Supports NEC IR waveform decoding for seamless remote control debugging and maintenance.
- • **Precision Meets Portability:** Compact 3.19x2.56 inch design fits your toolkit without weighing you down.
- • **Rapid Recharge & Data Transfer:** USB-C interface powers quick 45-minute charging and smooth firmware updates—stay ahead with the latest features.

## Overview

The FNIRSI LCR-P1 is a compact, battery-powered transistor and component tester featuring a vibrant 1.44-inch color screen, intelligent automatic component identification, and advanced safety with auto-discharge protection. It supports a wide range of components including NPN/PNP transistors, MOSFETs, capacitors, resistors, inductors, diodes, and batteries. With USB-C charging and firmware upgrade capability, plus NEC infrared waveform analysis, it’s designed for professionals seeking precision, speed, and reliability in a sleek, portable device.

## Description

FNIRSI LCR-P1 Transistor Tester, Mosfet Transistor Capacitor Tester, SMD Electronic Component Tester, Diode Triode Zener Diode Resistance Inductance Battery Test LCR Meter MOS PNP NPN ESR Meter: desertcart.com: Tools & Home Improvement

Review: Broken test lead - Update to original Review ~~~~~~~~~~~~~~~~~~~~ I updated my review to 5 stars for the simple reason the support folk responded swiftly (within 36 hours) to my issue of a broken black lead and have shipped me a new set of leads to rectify the situation even though I clarified I only needed a replacement black lead. That's the kind of after sale service we all yearn for, a seller/manufacturer that cares about its customers. They say it may take 10 days for the leads to get here but they've given me a shipping tracking number and I'm perfectly ok with waiting. Thanks guys for caring. The meter continues to provide impressive results on analyzing and calculating the values of components I've tried. I realize some reviewers have noted issues but again, in cases where I can determine the part number of transistors etc, I've not had any issues testing the ones I have confirming them against the manufacturers specs. For the price, even though this unit seems very light weight and perhaps feels a little flimsy due to its tiny size, I'm impressed and will continue to add my recommendation, more so now I've received excellent after sales service to rectify a lead problem. At some stage I hope to find a small hard shell case I can keep it in but for now, I've retained the box it came in as it affords protection for the ZIF lever which protrudes out the side. Not a big issue. Original Review ~~~~~~~~~~~~~ To be upfront, I've emailed the support folks regarding this. If they respond and deal with the issue I'll gladly change the review but for now... Received the unit today. Here's the initial review. The unit is much smaller than I had expected. It works great!!!... but it is tiny. I tested transistors, mosfets. caps (various types), resistors, even tested the IR detector. IR detector worked just fine. It appears to give different codes for different buttons so I have no reason to disagree with the results. Capacitors tested were all correct results. Only thing I noticed is that the cap rating was within 2-3% of the caps rating. Some were spot on. None the less, I would say all caps tested were correctly identified. MOSFETs tested were all correct results. After reading reviews I decided not to just plug them in but checked online for the pinouts and use the leads. This is where I encountered a problem... The supplied black lead arrived broken! More on this later. I temporarily rigged up a lead from some other test leads I had. It correctly identified the MOSFETs I tested. Transistors. Same as MOSFETs, they all tested with correctly identified results per spec sheets I found online Resistors all tested correctly with the correct ratings. The screen display, while small, is very legible. I had no issues reading results and the color screen is actually very nice and clearly labels the pins on the connector. Very nice!!!! I did remove the ZIF and install the surface mount just to see it fitted okay. Not sure I'll use that part but wanted to see it fitted. The ZIF attached to the circuit board feels a little a little fragile but as I said, I will use this almost exclusively so I currently see no reason to remove/replace it with any frequency. So I'm totally happy with this setup for my situation. I did charge the unit using a standard 5v 2aH USB-C charger and cable. Charged fully within 45 minutes. No issues there either. So I have to say, very impressed. Everything tested thus far was correctly identified per the ratings either on the component or on the spec sheets. The black test lead arrived "broken". The test leads are not a great quality but none the less, one is broken. I've emailed support to see if they are going to replace the lead. If not I will return and request a replacement of the order from desertcart. If they replace the lead, I'll gladly change the rating to 5 stars because functionally I was very impressed with the unit. Now a minor quirk... Do NOT throw away the box... unfortunately, the unit is tiny and looks/feels fragile. Also with the ZIF connector, the lever sticks out the side so actually it's best kept in the box to keep it safe. I have no problem with that but the box tore very easy while trying to open so I ended up using some clear packing tape to strengthen it and hold it together. Still, this is a minor quirk and has nothing to do with the units functionality. So depending on whether the support folks are going to replace the broken test lead or I have to return it to get one that isn't broken, time will tell. I'll give them a week or so to respond and if nothing heard, back it goes for replacement. Yes, I would replace it because functionally, this does everything I had hoped it would do. If you do buy one, check the leads and meter functionality soon as you get it. If you're expecting it to give 100% ratings, you might be a little disappointed but as everything I tested came in 2-3% with some being spot on, it would be sensible to also note that the variance could be the components tested themselves. The electrolytic caps were new and some were used, the MOSFETs, other caps, resistors etc were all used (taken off dead circuit boards). I was testing things to see that they they came within an acceptable range of the rating and in my case, they did.
Review: Works well, seems to be good quality, plan on using it for years - I bought this to replace a 10+ year old transistor-tester & LCR meter that came without an enclosure and eventually died on me. This unit works well and so far the test results match up with what I expected so I trust the data it spits out. The display is very good quality for what this is, it puts my multimeter & other equipment to shame in how easy it is to read & use. I have not yet had to charge the internal battery so I do not know how long the battery lasts or how long it takes to recharge.

## Features

- Transistor Capacitor Tester: FNIRSI LCR-P1 transistor tester can be used for the measurement and analysis of patch component, NPN, PNP, triode, MOS, field effect transistor (FET), diode, Zener diode, capacitor, resistor, inductor, battery, etc
- Friendly Design: The design of the replaceable patch seat enables measurement of both tiny precision components and high-power devices. 1.44 inch full-color screen, 300 mah battery, Type-c interface for charging and data transmission, firmware upgrade
- Anti-burn protection mechanism: The capacitance resistance esr tester automatically identifies undischarged capacitors and automatically discharges them at the moment of insertion and locking to prevent accidental damage
- NEC Infrared Waveform: FNIRSI LCR-P1 transistor detector supports the analysis of NEC infrared protocol code, so it can be used for the debugging and maintenance of remote control equipment, and provides users with comprehensive detection and analysis
- Intelligent automatic identification: Capacer tester intelligent automatic detection of component pins definition and parameters, and can quickly identify its models and specifications, thereby greatly improving the efficiency of work

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0DDBPWYP8 |
| Batteries | 1 Lithium Polymer batteries required. (included) |
| Best Sellers Rank | #6,257 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #1 in Capacitance & Resistance Meters #29 in Multi Testers |
| Brand | FNIRSI |
| Color | Black |
| Date First Available | August 16, 2024 |
| Item Weight | 2.72 ounces |
| Item dimensions L x W x H | 3.19 x 2.56 x 0.98 inches |
| Item model number | LCR-P1 |
| Manufacturer | FNIRSI |
| Measurement Type | LCR Meter |
| Power Source | Battery Powered |
| Product Dimensions | 3.19 x 2.56 x 0.98 inches |
| Specification Met | CE |
| Style | Transistor Tester |
| Upper Temperature Rating | 40 Degrees Celsius |

## Product Details

- **Brand:** FNIRSI
- **Color:** Black
- **Item Weight:** 2.72 ounces
- **Power Source:** Battery Powered
- **Style:** Transistor Tester

## Images

![FNIRSI LCR-P1 Transistor Tester, Mosfet Transistor Capacitor Tester, SMD Electronic Component Tester, Diode Triode Zener Diode Resistance Inductance Battery Test LCR Meter MOS PNP NPN ESR Meter - Image 1](https://m.media-amazon.com/images/I/71vBeoBwVCL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Broken test lead
*by S***N on June 21, 2025*

Update to original Review ~~~~~~~~~~~~~~~~~~~~ I updated my review to 5 stars for the simple reason the support folk responded swiftly (within 36 hours) to my issue of a broken black lead and have shipped me a new set of leads to rectify the situation even though I clarified I only needed a replacement black lead. That's the kind of after sale service we all yearn for, a seller/manufacturer that cares about its customers. They say it may take 10 days for the leads to get here but they've given me a shipping tracking number and I'm perfectly ok with waiting. Thanks guys for caring. The meter continues to provide impressive results on analyzing and calculating the values of components I've tried. I realize some reviewers have noted issues but again, in cases where I can determine the part number of transistors etc, I've not had any issues testing the ones I have confirming them against the manufacturers specs. For the price, even though this unit seems very light weight and perhaps feels a little flimsy due to its tiny size, I'm impressed and will continue to add my recommendation, more so now I've received excellent after sales service to rectify a lead problem. At some stage I hope to find a small hard shell case I can keep it in but for now, I've retained the box it came in as it affords protection for the ZIF lever which protrudes out the side. Not a big issue. Original Review ~~~~~~~~~~~~~ To be upfront, I've emailed the support folks regarding this. If they respond and deal with the issue I'll gladly change the review but for now... Received the unit today. Here's the initial review. The unit is much smaller than I had expected. It works great!!!... but it is tiny. I tested transistors, mosfets. caps (various types), resistors, even tested the IR detector. IR detector worked just fine. It appears to give different codes for different buttons so I have no reason to disagree with the results. Capacitors tested were all correct results. Only thing I noticed is that the cap rating was within 2-3% of the caps rating. Some were spot on. None the less, I would say all caps tested were correctly identified. MOSFETs tested were all correct results. After reading reviews I decided not to just plug them in but checked online for the pinouts and use the leads. This is where I encountered a problem... The supplied black lead arrived broken! More on this later. I temporarily rigged up a lead from some other test leads I had. It correctly identified the MOSFETs I tested. Transistors. Same as MOSFETs, they all tested with correctly identified results per spec sheets I found online Resistors all tested correctly with the correct ratings. The screen display, while small, is very legible. I had no issues reading results and the color screen is actually very nice and clearly labels the pins on the connector. Very nice!!!! I did remove the ZIF and install the surface mount just to see it fitted okay. Not sure I'll use that part but wanted to see it fitted. The ZIF attached to the circuit board feels a little a little fragile but as I said, I will use this almost exclusively so I currently see no reason to remove/replace it with any frequency. So I'm totally happy with this setup for my situation. I did charge the unit using a standard 5v 2aH USB-C charger and cable. Charged fully within 45 minutes. No issues there either. So I have to say, very impressed. Everything tested thus far was correctly identified per the ratings either on the component or on the spec sheets. The black test lead arrived "broken". The test leads are not a great quality but none the less, one is broken. I've emailed support to see if they are going to replace the lead. If not I will return and request a replacement of the order from Amazon. If they replace the lead, I'll gladly change the rating to 5 stars because functionally I was very impressed with the unit. Now a minor quirk... Do NOT throw away the box... unfortunately, the unit is tiny and looks/feels fragile. Also with the ZIF connector, the lever sticks out the side so actually it's best kept in the box to keep it safe. I have no problem with that but the box tore very easy while trying to open so I ended up using some clear packing tape to strengthen it and hold it together. Still, this is a minor quirk and has nothing to do with the units functionality. So depending on whether the support folks are going to replace the broken test lead or I have to return it to get one that isn't broken, time will tell. I'll give them a week or so to respond and if nothing heard, back it goes for replacement. Yes, I would replace it because functionally, this does everything I had hoped it would do. If you do buy one, check the leads and meter functionality soon as you get it. If you're expecting it to give 100% ratings, you might be a little disappointed but as everything I tested came in 2-3% with some being spot on, it would be sensible to also note that the variance could be the components tested themselves. The electrolytic caps were new and some were used, the MOSFETs, other caps, resistors etc were all used (taken off dead circuit boards). I was testing things to see that they they came within an acceptable range of the rating and in my case, they did.

### ⭐⭐⭐⭐⭐ Works well, seems to be good quality, plan on using it for years
*by S***2 on January 7, 2026*

I bought this to replace a 10+ year old transistor-tester & LCR meter that came without an enclosure and eventually died on me. This unit works well and so far the test results match up with what I expected so I trust the data it spits out. The display is very good quality for what this is, it puts my multimeter & other equipment to shame in how easy it is to read & use. I have not yet had to charge the internal battery so I do not know how long the battery lasts or how long it takes to recharge.

### ⭐⭐⭐⭐ Inductance meter FNRSI not good...
*by C***E on November 30, 2025*

Inductance meter FNRSI not good... Only measured ohms on 8 out of 10 inductors tried, measured 2 inductors for both ohms and micro henries but was badly inaccurate... All other components it did a great job especially Transistors & Diodes it doesn't just show good or 1 stat' but gain hfe, forward voltage and base biasing current, shows even capacitance of LED or diodes as well as other stat's. Personally disappointed on the inductance since that was mostly what I was after LCR Meter but I have to remember today's $25 was my day's $5 ... It's okay for the money not super accurate especially on inductance if you can get a reading but accurate enough for most hobbyist and casual users. I even checked it's capacitance accuracy against my DMM\Oscilliscope made by same Chinese manufacturer and this device was within 3% accurate to the better meter... Updated Review: The manufacturer emailed me and offered money back. I raised them a star ⭐ for actually caring customer service. I like the device, for what it is.

## Frequently Bought Together

- FNIRSI LCR-P1 Transistor Tester, Mosfet Transistor Capacitor Tester, SMD Electronic Component Tester, Diode Triode Zener Diode Resistance Inductance Battery Test LCR Meter MOS PNP NPN ESR Meter
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*Product available on Desertcart Thailand*
*Store origin: TH*
*Last updated: 2026-02-17*