---
product_id: 470726911
title: "Transistor Tester, DROK Mosfet Transistor Capacitor Tester, Mega328 NPN PNP Transistor Diode Resistor Inductor Capacitance MOS SCR ESR Meter Automatic Checker Detector"
brand: "drok"
price: "₨2241"
currency: SCR
in_stock: true
url: https://www.desertcart.sc/products/470726911-transistor-tester-drok-mosfet-transistor-capacitor-tester-mega328-npn-pnp
store_origin: SC
region: Seychelles
---

# Auto shut-down with countdown Auto-identifies NPN/PNP & MOSFET 1.8" TFT color LCD Transistor Tester, DROK Mosfet Transistor Capacitor Tester, Mega328 NPN PNP Transistor Diode Resistor Inductor Capacitance MOS SCR ESR Meter Automatic Checker Detector

**Brand:** drok
**Price:** ₨2241
**Availability:** ✅ In Stock

## Summary

> ⚡ Test Smarter, Not Harder: The Ultimate All-in-One Transistor Detective!

## Quick Answers

- **What is this?** Transistor Tester, DROK Mosfet Transistor Capacitor Tester, Mega328 NPN PNP Transistor Diode Resistor Inductor Capacitance MOS SCR ESR Meter Automatic Checker Detector by drok
- **How much does it cost?** ₨2241 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sc](https://www.desertcart.sc/products/470726911-transistor-tester-drok-mosfet-transistor-capacitor-tester-mega328-npn-pnp)

## Best For

- drok enthusiasts

## Why This Product

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

## Key Features

- • **Smart Auto-Detection:** Automatically identifies NPN/PNP transistors, N/P-channel MOSFETs, diodes, thyristors, and more—no manual setup needed.
- • **Vivid 1.8" Color Display:** High-res TFT screen with color-coded parameters for instant clarity and precision.
- • **Portable & Battery Powered:** Compact, lightweight design powered by a standard 9V battery—ideal for on-the-go professionals and fieldwork.
- • **All-in-One Component Testing:** Effortlessly tests transistors, diodes, resistors, capacitors, inductors, MOS, SCR, and ESR with one device.
- • **Energy-Saving Auto Shut-Down:** Built-in countdown timer powers off device after inactivity, extending battery life and reliability.

## Overview

The DROK Transistor Tester is a versatile, battery-powered digital meter featuring a sharp 1.8" color LCD that automatically identifies a wide range of electronic components including transistors, MOSFETs, diodes, resistors, capacitors, and inductors. Designed for precision and convenience, it includes an energy-saving auto shut-down function and supports ESR measurement, making it an essential tool for engineers and electronics enthusiasts seeking fast, reliable diagnostics.

## Description

Transistor Tester, DROK Mosfet Transistor Capacitor Tester, Mega328 NPN PNP Transistor Diode Resistor Inductor Capacitance MOS SCR ESR Meter Automatic Checker Detector

## Features

- 【WIDE APPLICATION】- This multifunctional capacitance meter can be used to test triode, field-effect tube(FET), diode, resistor, capacitor, inductor, MOS, SCR, which is available for various electric transistor testing.
- 【LARGE & CLEAR LCD DIGITAL DISPLAY】- This amazing detector adopts 1.8" TFT color LCD screen with high-resolution. Besides, different parameter is shown with different color, convenient and simple for you to check the parameter.
- 【AUTOMATICAL IDENTIFICATION】- DROK intelligent transistor checker is able to detect NPN and PNP transistors, N-channel and P-channel MOSFET, diodes, thyristors, resistors, capacitors or other devices automatically.
- 【AUTO SHUT-DOWN FUNCTION】- Our advanced electronic transistor tester owns auto shut-down function. There is shutdown countdown displayed on the monitor and the shutdown countdown time can be extended to 40s.
- 【BATTERY POWERED】- This monitor is powered by DC9V battery (not included).

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | DROK |
| Power Source | Battery Powered |
| Style | Digital,Simple |
| Colour | Transistor Tester |
| Item Weight | 4 Pounds |
| Min. Operating Voltage | 9 Volts |
| Specification Met | CE |
| Measurement Type | ESR meter |
| Maximum Operating Voltage | 9 Volts |
| Manufacturer | Cllena |
| Item model number | 300427 |
| Package Dimensions | 17.2 x 11 x 3.81 cm; 1.81 kg |
| ASIN | B01MS1FOYM |

## Product Details

- **Brand:** DROK
- **Power Source:** Battery Powered
- **Style:** Digital,Simple
- **Colour:** Transistor Tester
- **Item Weight:** 4 Pounds

## Images

![Transistor Tester, DROK Mosfet Transistor Capacitor Tester, Mega328 NPN PNP Transistor Diode Resistor Inductor Capacitance MOS SCR ESR Meter Automatic Checker Detector - Image 1](https://m.media-amazon.com/images/I/61Gpalf+XBL.jpg)
![Transistor Tester, DROK Mosfet Transistor Capacitor Tester, Mega328 NPN PNP Transistor Diode Resistor Inductor Capacitance MOS SCR ESR Meter Automatic Checker Detector - Image 2](https://m.media-amazon.com/images/I/716041k6+EL.jpg)
![Transistor Tester, DROK Mosfet Transistor Capacitor Tester, Mega328 NPN PNP Transistor Diode Resistor Inductor Capacitance MOS SCR ESR Meter Automatic Checker Detector - Image 3](https://m.media-amazon.com/images/I/71QTrBdLzZL.jpg)
![Transistor Tester, DROK Mosfet Transistor Capacitor Tester, Mega328 NPN PNP Transistor Diode Resistor Inductor Capacitance MOS SCR ESR Meter Automatic Checker Detector - Image 4](https://m.media-amazon.com/images/I/71ZPCC60e3L.jpg)
![Transistor Tester, DROK Mosfet Transistor Capacitor Tester, Mega328 NPN PNP Transistor Diode Resistor Inductor Capacitance MOS SCR ESR Meter Automatic Checker Detector - Image 5](https://m.media-amazon.com/images/I/61gtNAtw8RL.jpg)

## Questions & Answers

**Q: I am trying to measure a inductor and it keeps coming back with a resistance.  How do I fix this?**
A: I found out that the tester can’t measure inductance below 10uH. It helps to buy a pack of inductors of various values to always check the tester. This is how I found out that mine cant’ measure inductors below 10uH.

**Q: Can it be powered with a cable?**
A: I did a simple mod in order to power it from a basic 9vdc power supply l. I simply installed a standard 12mm polarised jack into the case  (theres a slot in the top center of the pcb to allow room) and use a currwnt limited wall wart or bench top piwer supply for the required 9 volts  (solder the 2 wires from the jack  to the battery terminal connections on the pcb matching polarity). Mine has worked a charm and no worries plus you have the option of using either power source. If you would like to know more on this mod reply and I will supply you with a more detailed step by step with photos.

**Q: will this tester work with germanium transistors? also, does it report transistor leakage?**
A: I haven't found a germanium transistor to test yet, but I have tested Ge small-signal diodes with mine, so I'm fairly certain this tester can properly identify and test Ge teansistors as well.   If so, it will show the device type (PNP/NPN), ID the leads (BCE), and show the hfe (gain), but it will not show a leakage current value.
   The primary diference between Ge and Si devices is the difference in the voltage drop across a forward-biased junction. Ge junctions show a 0.3 - 0.4v drop, and Si junctions show 0.6 - 0.7v.

**Q: will it tell me the pin identification?**
A: With in reason.  You will need the spec sheet, say you have a bad unit, it may identify it as two diodes and you know it is not two diodes, it is a 222.  So YES it will / it has done it correctly for me on good devices, on devices that fail, it may show unknown device or something like a mess of diodes  or something else.  Nothing the spec sheet would show.  hope this helps.  I also use a Heathkit transistor tester so I can supply a load.  If you are working with hard to replace /find items, I suggest you also get something that will supply a real load so you can see if it breaks down after 2 minutes or something like that.  hope this helps,  I am pleased with cost vs use I have gotten.  SO far so good.  Get used to getting the pins in 1 2 3 any way, but 1,2,3.   George

## Frequently Bought Together

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*Product available on Desertcart Seychelles*
*Store origin: SC*
*Last updated: 2026-03-17*