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Component testers are invaluable tools for electronics enthusiasts, hobbyists, and professionals alike. Accurately identifying and testing electronic components is crucial for troubleshooting circuits, verifying functionality, and ensuring the integrity of electronic projects. Investing in a reliable component tester can save time and prevent costly mistakes.
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
Instant Inductor– In-Circuit Friendly：Simply bring the sensing tip close to the target inductor directly on the board – no need to desolder or lift any components. Green LED lights up = coil working normally. No light = faulty inductor. Perfect for...
Type-C Powered：Always Ready – Runs directly from any Type‑C source: charger, power bank, or laptop. No batteries to replace, no wall wart needed.
True Plug & Play：No drivers, no calibration, no menus. Press the button and test instantly. Perfect for beginners learning board repair and pros who value speed.
Compact & DIY- friendly Design：Ultra-small 75×27mm body fits easily into any toolkit, pocket, or even a 3D‑printed enclosure mod. Safe for tight boards and dense component layouts – no accidental shorting risks during probing.
High Accuracy & Reliable Stability：Engineered specifically for inductor testing on phone motherboards, Arduino boards, power supply circuits, and other DIY electronics. Speeds up failure diagnosis, and reduces unnecessary part swapping.
【Dual Parameter】FNIRSI LC1020E LCR Meter supports AUTO, Capacitance, Resistance, and Inductance with main/secondary parameters (X/D/Q/θ/ESR) shown simultaneously. Frequencies: 100Hz/120Hz/1kHz/10kHz/100kHz. 19,999-count display ensures precise...
【Smart Sorting】ESR Meter with Sorting & Comparison Mode calculates relative error (%) using preset nominal/tolerance (0.1%–99.9%) for accurate component screening. Alerts via sound/LED. Supports Capacitors 1pF–100mF, Resistors 10mΩ–10M...
【Reliable Testing】Capacitance meter supports open/short calibration, adjustable test voltage (0.1/0.3/0.6V) and internal bias (0.0/0.5V). Records if components meet preset nominal/tolerance, tracking success/fail counts. Data hold locks readings...
【User-Friendly】ESR meter capacitor tester features 3-pin sockets and 5-slot jacks for precise four-terminal (Kelvin) measurements with professional fixtures. 2.8” TFT display with 10-level brightness. 3000mAh battery with auto-off, Type-C...
【Note】Perform open/short calibration before measurement. Fully discharge capacitors and inductors. For onboard components, ensure the circuit is powered off. Do not measure live circuits to avoid damage or inaccurate readings
【Wild Application】:Automatic detection of NPN and PNP transistors,n-channel and p-channel MOSFET,diode (including double diode), thyristor, Mega328,BJT,resistor and capacitor and various electric transistor testing.
【BATTERY POWERED】:Built-in lithium battery, convenient and effective,the indicator light shows green when fully charged. Warm Reminder:The charging input voltage is 4.5V, please do not use it under over pressure, otherwise the tester will be damaged.
【Add IR Decoder】: After the component detection is completed,the infrared remote control at the tester "IR" test hole,press the remote control key,the tester will be display the user code & data code and the corresponding infrared waveform after the...
【Auto shut-down Function】:Our advanced electronic transistor tester with automatic shutdown and manual shut-down function.use accessories,more convenient and efficient to complete your project.
【Attachment 】: Any situations,please feel free to contact us by email,especially when you need the manual.
Digital 128*64 LCD display for easy readings, can display measured data and graphics.
Short detection time: only 1.7 seconds. It is normal to take 1 minute for bulk capacitor detection
Automatic detection of NPN and PNP transistors, N-channel and P-channel MOSFET, diodes, triodes, resistors, capacitors or other devices
Use 9V battery(not included), can also use DC power(DC 6.8-12V). Automatic shutdown, shutdown current is only about 20nA.
Measure the gate threshold voltage and gate capacitance of the MOSFET,Measure bipolar transistor current amplification factor and base-emitter threshold voltage
【Multifunctional Transistor tester】LCR-P1 is able to detect and analyze the performance and characteristics of semiconductor components such as transistors,diodes, triodes, and field-effect transistors (FETs),etc.
【Testing Range】Resistance:0.010-50MΩ;Capacitance: 25pF~100mF; Inductance:10uH-1000uH; Transistor:10<β<600;Diode:Forward voltage drop<4.5V; Voltage Regulator Diode:0.01-4.5V,0.01-32V;Field-Effect Transistor: JFET,IGBT, MOSFET
【Intelligent and Smart】LCR-P1 is able to identify component parameters with one button operation. It is equipped with anti-burn safety protection mechanism. The data could be transferred to PC via usb cable and exported as an Excel file for you to...
【Well-Built Transistor Tester】The LCR-P1 is equipped with 300mAH battery, you could use it both indoor and outdoor; color screen with backlit make data easier for you to read; Test boards are replaceable,making your testing quicker and more...
【 SMD Testing and NEC Infrared Signal Decoding】LCR-P1 is able to measure SMD components and supports NEC infrared signal decoding for remote testng.
【LCR Tweezer Tester】The FNIRSI LCR-ST1 is a multifunctional and portable testing instrument that supports precise measurement of resistance, capacitance, inductance, and diodes
【Measurement Range】3 test frequencies – 100 Hz, 1 kHz, 10 kHz. 2 test voltage - 0.3 Vrms, 0.6 Vrms. R: 10 mΩ to 10 MΩ / C: 1 pF to 22 mF / L:1 uH to 10 H
【Multiple functions】D, Z, Q, R, ESR value reading. Auto recognition of elecronic components, primary and secondary parameters display. 1.14'' HD color display, is easy to operation
【Data Storage and Export】The LCR tester can automatically save the test records. And you could connect the tester to your PC and transfer all the data to PC via EXCEL
【2 Types of Tweezer Heads】With pointed head and hook head, it is convenient to test different types of products. It is equipped with a storage bag and can be charged via a data cable
【Wide Application】Quickly detects defective components, perfect for SMD repairs, efficiently locates circuit board faults, and easily recovers parts from used boards
【Note】This product adopts a fixed screen design that does not support flipping or rotating.
Versatility: LCR-TC1 can be used to measure parameters of electronic components such as inductance (L), capacitance (C) and resistance (R). This makes it an important tool for electronics engineers, electronics hobbyists, and laboratory users as it helps...
High Accuracy: This test instrument has high-precision measurement capabilities and is able to provide accurate measurement results, which is critical for applications that require precise measurements. It helps ensure component quality and performance...
User Friendly: The LCR-TC1 features an intuitive user interface and an easy-to-read LCD display, making operation simple. Even beginners can easily use it for measurement and analysis.
Wide application: This instrument is suitable for various scenarios, including electronic repair, circuit design, education and scientific research. You can use it to test various electronic components such as inductors, capacitors, and transistors.
Portable Design: The LCR-TC1 has a compact design that makes it easy to carry, making it suitable for mobile and field testing. No matter where you are, it can handle testing tasks with ease.
Live-Circuit Testing：Just hold the sensor tip against any inductor on the board—no soldering or part removal needed. A green light means the coil is doing its job; no light tells you it's time for a replacement.
Type-C Anywhere Power：Plug into any Type-C port—phone charger, power bank, or laptop—and it's ready to go. No batteries to buy, no extra power brick to carry.
Instant One-Press Start：Turn it on with a single button push. No software to install, no calibration steps, no confusing menus. Works right out of the box for hobbyists and seasoned repair techs alike.
Small & Safe for Crowded Boards：At just 75×27mm, it slips into any tool kit or pocket. The compact shape keeps you from accidentally shorting nearby components, so you can probe tight power circuits with confidence.
Dependable Fault Finding：Built for real-world use on phone motherboards, Arduino projects, and power supplies. Helps you quickly separate good inductors from bad ones, so you spend less time swapping parts and more time fixing.
Automatic detection of NPN and PNP transistors, n-channel and p-channel MOSFET, diode (including double diode), thyristor, transistor, resistor and capacitor and other components
Can detect the transistor, MOSFET protection diode amplification coefficient and the base to determine the emitter transistor forward biased voltage
Can be in the correct order and the diode symbol display two diodes , and gives the diode forward voltage
measure capacitanceCan measure capacitance of 30pF-100mF , resolution 1pF
Last update on 2026-07-22 / Affiliate links / Images from Amazon Product Advertising API
How to Choose the Best Component Testers
Key Factors to Consider When Buying a Component Tester
When selecting a component tester, several factors will influence your purchase decision. Understanding these will help you find a tool that best suits your needs.
Accuracy and Measurement Range: The primary function of a component tester is accurate measurement. Ensure the device can reliably test the types of components you commonly work with, such as resistors, capacitors, inductors, diodes, transistors, and integrated circuits. Check the specified tolerance and measurement ranges for each component type to confirm compatibility with your projects.
Ease of Use and Display: A user-friendly interface and clear display are essential for efficient testing. Look for testers with intuitive controls, straightforward operation, and a readable screen that clearly presents measurement data. Some advanced models offer automatic component identification, which can significantly speed up the testing process.
Power Source and Portability: Consider how the tester is powered. Many are battery-operated, making them portable for on-the-go diagnostics. Others may require an external power supply, which is suitable for workshop use. If portability is important, evaluate the battery life and overall form factor of the device.
Frequently Asked Questions
What types of components can a typical component tester measure?
Most component testers can measure fundamental passive components like resistors, capacitors, and inductors. Many also test active components such as diodes, transistors (BJT and MOSFET), and some integrated circuits like operational amplifiers. Always check the specific capabilities of the model you are considering.
How accurate are component testers?
The accuracy of component testers varies by model and price point. Basic testers offer reasonable accuracy for general-purpose use, while professional-grade devices provide higher precision and tighter tolerances. For critical applications, it's important to review the manufacturer's specifications regarding measurement accuracy.
Are component testers difficult to use?
Many modern component testers are designed with user-friendliness in mind, often featuring automatic component identification and simple interfaces. However, understanding the basics of electronics will greatly enhance your ability to interpret the results and use the tester effectively.
Can a component tester diagnose faulty components?
Yes, a component tester can help diagnose faulty components by measuring their actual values and comparing them to expected specifications. Deviations in resistance, capacitance, or behavior of active components can indicate a defect, allowing for easier troubleshooting.
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