--- product_id: 39210588 title: "DROK Transistor Tester LCR Meter, Mosfet Transistor Capacitor Tester, Mega328 NPN PNP Transistor Diode Resistor Inductor Capacitance MOS SCR ESR Meter Automatic Checker Detector" brand: "drok" price: "€ 2.59" currency: EUR in_stock: false reviews_count: 13 url: https://www.desertcart.be/products/39210588-drok-transistor-tester-lcr-meter-mosfet-transistor-capacitor-tester-mega328 store_origin: BE region: Belgium --- # 1.8" TFT color LCD display 9V battery powered for portability Auto-identifies NPN/PNP, MOSFET, diodes & more DROK Transistor Tester LCR Meter, Mosfet Transistor Capacitor Tester, Mega328 NPN PNP Transistor Diode Resistor Inductor Capacitance MOS SCR ESR Meter Automatic Checker Detector **Brand:** drok **Price:** € 2.59 **Availability:** ❌ Out of Stock ## Summary > ⚡ Empower Your Electronics Game with Precision & Speed! ## Quick Answers - **What is this?** DROK Transistor Tester LCR Meter, 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?** € 2.59 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.be](https://www.desertcart.be/products/39210588-drok-transistor-tester-lcr-meter-mosfet-transistor-capacitor-tester-mega328) ## 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 - • **Portable & Battery Powered:** Runs on a standard 9V battery, perfect for on-the-go diagnostics without tethering to power outlets. - • **Energy-Saving Auto Shut-Down:** Built-in countdown timer powers off device after inactivity, extending battery life and reliability. - • **Smart Auto-Detection Technology:** Automatically identifies component types and polarities, eliminating guesswork and saving time. - • **All-in-One Component Compatibility:** Seamlessly test transistors, MOSFETs, diodes, resistors, capacitors, inductors, SCRs, and ESR with one device. - • **Vivid Color Display for Instant Clarity:** 1.8" high-res TFT screen with color-coded parameters makes testing faster and more intuitive. ## Overview The DROK Transistor Tester LCR Meter is a versatile, battery-powered diagnostic tool featuring a vibrant 1.8" TFT color LCD that auto-identifies a wide range of electronic components including transistors, MOSFETs, diodes, and more. Designed for professionals and enthusiasts alike, it combines portability with smart technology and energy-saving features to streamline your testing workflow. ## Description Buy DROK Transistor Tester LCR Meter, Mosfet Transistor Capacitor Tester, Mega328 NPN PNP Transistor Diode Resistor Inductor Capacitance MOS SCR ESR Meter Automatic Checker Detector: LCR Meters - desertcart.com ✓ FREE DELIVERY possible on eligible purchases Review: Some measurement devices are far more useful than you would ever learn about in electronics/EE - I spend a good amount of time troubleshooting electronic faults at work, replacing faulty components. In many cases, I am working with circuit boards that I don't have the ability to power on the circuit using a DC power supply or batteries, for regular troubleshooting by measuring voltages with a DMM and a oscilloscope. This device is handy, it's always with me. For example, some LEDs can be tested using a DMM such as Fluke, set to the diode test measurement, depending on the power requirements for a particular LED and its color and illumination characteristics. On some LEDs one can see the diode light up briefly using a Fluke (or other DMM). Some LED's however will not illuminate using just a diode tester on a DMM. When testing LEDs, I reach for this device before a DMM, it reliably illuminates and LED with briefly or a rapid series of pulses, including Cree LEDs. As another reviewer has mentioned, not all circuit-testing is done on live circuits simply because the ability to energize the circuit may not be feasible or possible. This device has saved me a lot of time where a circuit arrangement that I test results in a complete oddball of a test result, such as reporting a double diode instead of a bijunction transistor, or other circuit boards do not result in the same repeatable test result for faulty boards, while the board is not energized. I could not do my work without a multimeter available as my most important tool, I simply wouldn't bother. At the same time, this device reports results that are arrived at by intuition and practice using just a DMM. One other valuable function of this device is that I can take a number of transistors and get a consistent reading for range of performance so that I can match a number of transistors in cases there they must perform almost equally well. Using this device is far simpler than creating a test fixture to test transistors so they can be matched. I do this even with resistors too, 1% tolerance sounds nice but is not always the case--I use the ohmmeter function on my DMM for that, it's simple. For testing transistors or diodes, this device makes segregating similar performers together, much simpler. I haven't even needed to change the 9V battery in almost two-years of use. Review: Great value for the price! - I would have given this 4 1/2 stars if I could. The only CON I have found is the mounting of the ZIF socket. It tends to be a little "wobbly" at times and requires care in inserting/removing components. Other than that one issue, this device is amazing for the price. As far as accuracy goes, it is certainly sufficient for "go/no go" testing of most electronic components. I tested several resistors, diodes, transistors, capacitors, and inductors. For all of the components I tested, the results were within similar ranges measured using other instruments on my workbench. This is a great little tool for pre-checking components before installing them. The biggest PRO I can name is the simple fact that you can place any component in almost any orientation in this device and it will automatically detect the type of component and report the proper measurement. For the price, this is a great little tool. The only other complaint I might have is the size of the screen; with my older eyes, reading glasses are a must when using this. ## 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. - ✔ BATTERY POWERED: This monitor is powered by DC 9V battery (not included). - ✔ 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. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B01MS1FOYM | | Best Sellers Rank | #378,874 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #40 in LCR Meters | | Brand | DROK | | Brand Name | DROK | | Compatible Devices | Transistors (NPN, PNP), MOSFETs (N-channel, P-channel), Diodes, Thyristors, Resistors, Capacitors, Inductors, MOS, SCR, ESR meters | | Customer Reviews | 4.5 out of 5 stars 1,055 Reviews | | Item Weight | 4 pounds | | Manufacturer | DROK | | Measurement Type | LCR Meter | | Min. Operating Voltage | 9 volts | | Minimum Operating Voltage | 9 volts | | Model | Transistor Tester | | Number of Items | 1 | | Number of Packs | 1 | | Part Number | 300427 | | Power Source | Battery Powered | | Style | Voltage Tester | | Style Name | Voltage Tester | | Unit Count | 1 Count | | Upper Temperature Rating | 85 °C | ## Product Details - **Brand:** DROK - **Item Weight:** 4 pounds - **Min. Operating Voltage:** 9 volts - **Power Source:** Battery Powered - **Style:** Voltage Tester ## Images ![DROK Transistor Tester LCR Meter, 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) ![DROK Transistor Tester LCR Meter, 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/71vk25nyZtL.jpg) ![DROK Transistor Tester LCR Meter, 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/71KX6GKghLL.jpg) ![DROK Transistor Tester LCR Meter, 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/71xo6ljof+L.jpg) ![DROK Transistor Tester LCR Meter, 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/71a6-5eMJ9L.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 ## Customer Reviews ### ⭐⭐⭐⭐⭐ Some measurement devices are far more useful than you would ever learn about in electronics/EE *by B***G on November 6, 2019* I spend a good amount of time troubleshooting electronic faults at work, replacing faulty components. In many cases, I am working with circuit boards that I don't have the ability to power on the circuit using a DC power supply or batteries, for regular troubleshooting by measuring voltages with a DMM and a oscilloscope. This device is handy, it's always with me. For example, some LEDs can be tested using a DMM such as Fluke, set to the diode test measurement, depending on the power requirements for a particular LED and its color and illumination characteristics. On some LEDs one can see the diode light up briefly using a Fluke (or other DMM). Some LED's however will not illuminate using just a diode tester on a DMM. When testing LEDs, I reach for this device before a DMM, it reliably illuminates and LED with briefly or a rapid series of pulses, including Cree LEDs. As another reviewer has mentioned, not all circuit-testing is done on live circuits simply because the ability to energize the circuit may not be feasible or possible. This device has saved me a lot of time where a circuit arrangement that I test results in a complete oddball of a test result, such as reporting a double diode instead of a bijunction transistor, or other circuit boards do not result in the same repeatable test result for faulty boards, while the board is not energized. I could not do my work without a multimeter available as my most important tool, I simply wouldn't bother. At the same time, this device reports results that are arrived at by intuition and practice using just a DMM. One other valuable function of this device is that I can take a number of transistors and get a consistent reading for range of performance so that I can match a number of transistors in cases there they must perform almost equally well. Using this device is far simpler than creating a test fixture to test transistors so they can be matched. I do this even with resistors too, 1% tolerance sounds nice but is not always the case--I use the ohmmeter function on my DMM for that, it's simple. For testing transistors or diodes, this device makes segregating similar performers together, much simpler. I haven't even needed to change the 9V battery in almost two-years of use. ### ⭐⭐⭐⭐⭐ Great value for the price! *by J***R on November 15, 2019* I would have given this 4 1/2 stars if I could. The only CON I have found is the mounting of the ZIF socket. It tends to be a little "wobbly" at times and requires care in inserting/removing components. Other than that one issue, this device is amazing for the price. As far as accuracy goes, it is certainly sufficient for "go/no go" testing of most electronic components. I tested several resistors, diodes, transistors, capacitors, and inductors. For all of the components I tested, the results were within similar ranges measured using other instruments on my workbench. This is a great little tool for pre-checking components before installing them. The biggest PRO I can name is the simple fact that you can place any component in almost any orientation in this device and it will automatically detect the type of component and report the proper measurement. For the price, this is a great little tool. The only other complaint I might have is the size of the screen; with my older eyes, reading glasses are a must when using this. ### ⭐⭐⭐⭐ Good and Bad, mostly Good *by J***. on November 22, 2020* Overall, I am happy with this tester. The bad: the LCD display is small/hard to read for people over 40, the ZIF socket is flimsy and this impacts the user's ability to securely attach component wires you want to test. It could definitely be improved. Finally, the 40 second automatic shutoff is a pain. It sounds like a long time, but in practice, it is not. If they extended the automatic shutoff time to something like two minutes, it would be perfect and I suspect the battery life wouldn't be impacted all that much. Finally, the "manual" is not much use, more of a spec sheet than a user manual. The good: it is accurate. Very accurate. I have benchmarked it against various components of known value, as well as another component measurement device. The unit also provides very detailed component information. The color LCD display is nice, though as I said previously, you will have to wear reading glasses if you are middle-aged or older. I have used this device frequently over the last 6 months and it has never had even a hiccup. Overall, this is a nice, reasonably priced testing device. ## Frequently Bought Together - DROK Transistor Tester LCR Meter, Mosfet Transistor Capacitor Tester, Mega328 NPN PNP Transistor Diode Resistor Inductor Capacitance MOS SCR ESR Meter Automatic Checker Detector - Signstek MESR-100 V2 Auto Ranging in Circuit ESR Meter Capacitor Tester/Low Ohm Meter Up to 0.01 to 100R, Support in Measuring Capacitance Resistance Circuit - Lesnow solder wick braid 10ft Length Desoldering Wick Braid Remover Tool Solder Sucker 1 piece No-Clean soldering Wick Wire Roll and Disassemble Electrical Components --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.be/products/39210588-drok-transistor-tester-lcr-meter-mosfet-transistor-capacitor-tester-mega328](https://www.desertcart.be/products/39210588-drok-transistor-tester-lcr-meter-mosfet-transistor-capacitor-tester-mega328) --- *Product available on Desertcart Belgium* *Store origin: BE* *Last updated: 2026-11-11*