--- product_id: 254509467 title: "DROK Transistor Tester, Mosfet Transistor Capacitor Tester, Mega328 NPN PNP Transistor Diode Resistor Inductor Capacitance MOS SCR ESR Meter Automatic Checker Detector" brand: "drok" price: "3338CFA" currency: XOF in_stock: false url: https://www.desertcart.sn/products/254509467-drok-transistor-tester-mosfet-transistor-capacitor-tester-mega328-npn-pnp store_origin: SN region: Senegal --- # Wide application Large LCD display Battery powered DROK Transistor Tester, Mosfet Transistor Capacitor Tester, Mega328 NPN PNP Transistor Diode Resistor Inductor Capacitance MOS SCR ESR Meter Automatic Checker Detector **Brand:** drok **Price:** 3338CFA **Availability:** ❌ Out of Stock ## Summary > 🔧 Unleash Your Inner Engineer with Precision Testing! ## Quick Answers - **What is this?** DROK Transistor Tester, 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?** 3338CFA with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.sn](https://www.desertcart.sn/products/254509467-drok-transistor-tester-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 - • **🔋 Portable Power:** Operates on a standard 9V battery for on-the-go testing. - • **⚡ Automatic Detection:** Identifies components without manual input. - • **⏳ Smart Auto Shut-Down:** Conserves battery with a countdown feature. - • **🌈 Color-Coded Display:** High-resolution TFT screen for effortless reading. - • **🔍 Multifunctional Testing:** Easily test transistors, diodes, capacitors, and more! ## Overview The DROK Transistor Tester is a versatile and user-friendly device designed for testing a wide range of electronic components, including transistors, diodes, and capacitors. Featuring a large 1.8" TFT color LCD display, it provides clear readings with color-coded parameters. The tester automatically identifies component types and includes a smart auto shut-down function to save battery life. Perfect for professionals and hobbyists alike, this tool is powered by a standard 9V battery, making it ideal for both lab and field use. ## Description Parameters: Voltage supply: DC 9V Battery 6F22 (NOT Included) Transistors range: 2 or less (including 2) P-N junction transistor Resistors range: 0.5Ω - 50MΩ Capacitors range: 25pF-100000uF Inductors range: 0.01mH - 20H Dimensions: 70mm × 135mm × 24mm Operating Instruction: 1. The pins of the electronic components can be connected to the 1,2,3 pin optionally. This multifunctional meter is automatic identification type, which can detect the pin sequence, graphic display and parameters automatically. 2. Eg. If you want to test a triode, you do not need to worry about the BEC order of 1,2,3 pin. You just insert the triode into the testing interface optionally and then push the testing button. The meter will identify it if it is triode, field-effect tube, controlled silicon or resistance capacitance. After that, the r will detect it if it is NPN OR PNP and then the BCE order and other information. Testing Range: — Range of Transistor: Less than 2 (included 2) transistor which is made up of PN junction. Do not have any other resistance components in the interior. — Range of Resistance Testing: 0.5Ω-50MΩ — Range of Inductance Testing: 0.01mH-20H — Range of Capacitance Testing: 25pf - 100000uF Package includes: 1× Multifunction Transistor r ## 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 r 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 | |---------------|-------| | ASIN | B01MS1FOYM | | Best Sellers Rank | #240,319 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #1,201 in Multi Testers | | Brand Name | DROK | | Color | Transistor Tester | | Customer Reviews | 4.4 4.4 out of 5 stars (1,000) | | Item Weight | 4 Pounds | | Manufacturer | Cllena | | Measurement Type | Multimeter | | Minimum Operating Voltage | 9 Volts (DC) | | Model | Transistor Tester | | Part Number | 300427 | | Power Source | Battery Powered | | Specification Met | CE | | Unit Count | 1.0 Count | ## Product Details - **Brand:** DROK - **Colour:** Transistor Tester - **Item weight:** 1.81 kg - **Min. Operating voltage:** 9 Volts (DC) - **Power source:** Battery Powered ## Images ![DROK Transistor Tester, 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, 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, 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, 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, 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 ## 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.sn/products/254509467-drok-transistor-tester-mosfet-transistor-capacitor-tester-mega328-npn-pnp](https://www.desertcart.sn/products/254509467-drok-transistor-tester-mosfet-transistor-capacitor-tester-mega328-npn-pnp) --- *Product available on Desertcart Senegal* *Store origin: SN* *Last updated: 2026-05-22*