FNIRSI LC1020E

By andibond | 26.01.2026

Product Introduction

The FNIRSI LC1020E is a high-precision handheld LCR bridge tester designed to meet the demanding needs of electronics enthusiasts, radio amateurs, and professional engineers. This versatile instrument addresses the critical challenge of accurately identifying, measuring, and sorting passive electronic components such as inductors, capacitors, and resistors. Its unique combination of a wide measurement range, multiple test frequencies, and advanced features like component comparison and data logging sets it apart in the market. The LC1020E is an indispensable tool for circuit design, repair, quality control, and educational projects, providing reliable and precise diagnostics for a broad spectrum of applications, from low-frequency power supplies to shortwave radio circuits. Check out our other technical reviews for more hardware testing.

Hardware specifications

Core Specifications: FNIRSI LC1020E

• Model: LC1020E
• Display: 2.8-inch TFT LCD Display
• Basic Accuracy: 0.3%
• Display Digits: Main Parameter: 4.5 digits; Secondary Parameter: 4.5 digits
• Test Frequency: 100Hz, 120Hz, 1KHz, 10KHz, 100KHz
• Test Level: 0.1V, 0.3V, 0.6V
• Internal Bias: 0.0V, 0.5V
• Measurement Parameters: Main Parameters: AUTO/R/C/L/Z; Secondary Parameters: X/D/Q/θ/ESR
• Measurement Range: L: 0-100H, C: 0-100mF, R: 0-10MΩ
• Measurement Speed: Fast (4 times/s), Medium (2 times/s), Slow (1 time/s)
• Calibration Functions: Open circuit calibration, Short circuit calibration
• Comparison Function: Relative error calculation, filtering results, nominal values and tolerance (0.1% to 99.9%) settable.
• Record Function: Checks measured data against nominal value and tolerance, records successful and failed measurements.
• Test Terminal Configuration: Three-terminal, Five-terminal
• Output Impedance: 100Ω
• Communication Interface: USB-TypeC (Virtual serial port)
• Power Supply: 3.7V, 3000mAh rechargeable battery
• Other Features: Language settings, Screen brightness, Sound settings, Auto power-off, Calibration settings, System information, Component sorting, Data logging.
• Battery Included: Yes
• High-concerned chemical: None
• Laser hazard level: Class 1（<1mW）
• Certification: CE
• Origin: Mainland China
• Power Type: Rechargeable

Available Versions

Available Versions & Selection Guide

The FNIRSI LC1020E is available as a single model, LC1020E. There are no other specified versions or configurations mentioned in the provided data.

Package Contents

What’s in the Box?

The standard package for the FNIRSI LC1020E includes:
* LC1020E Host *1
* Data Cable *1
* Shorting Plate *1
* Kelvin Test Clip *1
* Test Leads (Black *1 + Red *1)
* User Manual *1

Features and benefits

Why I love FNIRSI LC1020E

• The FNIRSI LC1020E features a vibrant 2.8-inch TFT LCD display with a 4.5-digit resolution for both main and secondary parameters, providing clear, detailed, and comprehensive readings of component characteristics at a glance. This ensures that users can easily interpret complex measurement data, enhancing efficiency and reducing potential errors during analysis.
• With a remarkable basic accuracy of 0.3%, this LCR bridge tester delivers highly reliable and precise measurements across its extensive range. It supports inductance measurements from 0 to 100H, capacitance from 0 to 100mF, and resistance from 0 to 10MΩ, making it suitable for testing a vast array of components encountered in various electronic projects, from micro-components to large power supply capacitors.
• The device offers a selection of five test frequencies (100Hz, 120Hz, 1KHz, 10KHz, 100KHz) and three test levels (0.1V, 0.3V, 0.6V), along with internal bias options of 0.0V and 0.5V. This multi-frequency and multi-level testing capability allows users to accurately characterize components under conditions closely mimicking their intended circuit environment, providing deeper insights into their behavior and ensuring optimal performance.
• Equipped with both open-circuit and short-circuit calibration functions, the LC1020E ensures maximum measurement accuracy by compensating for the impedance of test leads and fixtures. Furthermore, its advanced comparison function allows users to calculate the relative error between a measured component value and a nominal value, with a settable tolerance range from 0.1% to 99.9%, enabling efficient component sorting and quality control for batch testing.
• The FNIRSI LC1020E boasts a versatile measurement speed, offering Fast (4 times/s), Medium (2 times/s), and Slow (1 time/s) modes, allowing users to prioritize either rapid checks or highly stable, precise readings. Its support for both three-terminal and five-terminal (Kelvin) test configurations, coupled with an output impedance of 100Ω, minimizes the impact of lead resistance on measurements, which is crucial for accurate testing of low-impedance components.
• The device’s comprehensive accuracy tables demonstrate its precision across various ranges and frequencies. For capacitance, it achieves 0.3% ± 2 digits for 1nF-1uF at 1KHz, and 1% ± 2 digits for 1pF-1nF at 1KHz. Inductance measurements show 0.3% ± 2 digits for 1mH-1H at 1KHz, and 0.5% ± 4 digits for 10uH-1mH at 1KHz. Resistance measurements are particularly impressive, reaching 0.2% ± 2 digits for 1KΩ-1MΩ at 1KHz, and 0.3% ± 2 digits for 1Ω-1KΩ at 1KHz, ensuring high fidelity for critical component analysis.
• Powering the device is a 3.7V, 3000mAh rechargeable battery, providing excellent portability for fieldwork, complemented by a modern USB-Type C interface for charging and data communication as a virtual serial port. Additional features like auto recognition, sorting mode, auto power-off, and data hold & record functions further enhance user convenience and streamline the testing workflow, making it an indispensable tool for any electronics workbench.

Pros and Cons

Strengths & Weaknesses:

What I Like
— High basic accuracy of 0.3% for reliable measurements
— Wide measurement ranges for L (0-100H), C (0-100mF), and R (0-10MΩ)
— Multiple test frequencies (100Hz to 100KHz) and test levels (0.1V to 0.6V) for versatile testing
— Supports both three-terminal and five-terminal (Kelvin) test configurations for enhanced precision
— Advanced comparison and record functions with settable tolerance for efficient component sorting and quality control
— Rechargeable 3.7V, 3000mAh battery and USB-Type C interface for portability and modern connectivity
— Clear 2.8-inch TFT LCD display with 4.5-digit resolution for easy reading of dual parameters
— Auto recognition and auto power-off features enhance user convenience
— Robust open-circuit and short-circuit calibration functions ensure measurement integrity
— Excellent build quality and packaging, as noted by multiple users

Points to Consider
— Limited accuracy for inductance measurements below 1µH, making it less ideal for very high-frequency (UHF) applications
— User manual may be incomplete, lacking detailed information on test accessories usage
— No built-in Russian language option, which might be an inconvenience for some users
— Does not include a dedicated carrying case for the device and its accessories
— Some reports of slight discrepancies when measuring extremely high-precision resistors (0.01% tolerance) compared to other meters

User reviews

Reviews | Customer Feedback ⭐ 4.9 (150) | Sold (500+)

Authentic Feedback Analysis:
⭐ 5.0/5 | С***ч: I placed an order during the first happy hour on 11.11. The price really became much more pleasant than it was before the sale. However, a little later it dropped even more on AliExpress 😉 The package was decent. The delivery was fast. The completeness corresponds to the description. I liked using the device. Immediately before use, I fully recharged the battery — the glow of the power button changed to green. Then, a few minutes after turning it on and «settling» the readings, I performed calibration with closed and then open contacts. I checked the characteristics of the electrolytic capacitors that came across — finally, I was confident that the selected components would now be fine. For me, the capabilities of this device are even excessive, but a reserve doesn’t hurt. Every radio amateur should have such a device. Thanks to the seller and AliExpress!
⭐ 5.0/5 | С***ч: An excellent device for radio amateurs: large display, wide measurement limits, good measurement speed, pleasant brand design. The only drawback is the inability to measure inductances less than 1µH: the accuracy of 0.01µH does not allow normal measurement of inductance in hundreds of nH — one can only estimate the order. So, for VHF enthusiasts, the device will be less valuable (look towards uRLC/nRLC or the HB-** series), but for shortwave enthusiasts, it’s perfect. And for those who work in the LF range (power supplies, ULF amplifiers, acoustics, etc.) — such a device is simply necessary. In the photo below: measurement of an inductance with a nominal value of 12µH, a trimmer capacitor (22pF), and a fixed resistor with a nominal value of 100 Ohm.
⭐ 5.0/5 | С***ч: First impression is very good. Calibrates, doesn’t drift with warming up. Readings are repeatable. A wish — to save probe calibration, as they also need to be calibrated.
⭐ 5.0/5 | Б***ч: Accuracy corresponds to the declared (verified on high-precision 0.05% resistors and 0.5% capacitors). Kelvin probes. Wide selection of measurement frequencies and voltages. Calibration capability. Very convenient to work with. Quality packaging and very fast delivery.
⭐ 5.0/5 | T***n: Perfect, i HIGHLY recommend buyers buy directly from FNIRSI, mist time they are the cheapest, sometimes they are a little more, but i rather pay more to have it shipped by them. Their Packaging is great and securer and you get your items without damaged packaging. As stated in many reviews, they care about the customer’s and the product they’re sending. Everything as described, fast postage!
⭐ 5.0/5 | Д***ч: As always, FNIRSI remains true to itself. The device is beyond praise. Measurement accuracy is top-notch.
⭐ 5.0/5 | C***l: Product conforms to the description, very good device, measurements are good and precise, functions are numerous and correct, the battery lasts well over time, fast delivery, I recommend this seller
⭐ 5.0/5 | س***ي: Very good, but for your information, it is not a multimeter, it is only for measuring oscillations, capacitors, and diodes. The most important thing is to calibrate before use
⭐ 5.0/5 | О***ч: I liked the device, the results of capacitance measurements may differ from the set frequency, the instructions have a table for the selected measurement range! Thank you)
⭐ 5.0/5 | Ш***ч: A cosmic device from a well-known company. I can’t believe I’m holding it. Nobody usually encounters such a class of accuracy. Well done!!! I recommend it 💯
⭐ 5.0/5 | Б***ч: I will soon collect the entire collection of FNIRSI devices, very convenient and inexpensive devices. I bought it for measuring and checking inductance
⭐ 5.0/5 | С***ч: Quality is top-notch. For this price, there are no competitors with the same accuracy.
⭐ 5.0/5 | Ш***ч: Arrived quickly, everything is perfect, the device works clearly. I always order measuring equipment from Fnirsi, I like it. Thanks to the seller and the store.
⭐ 5.0/5 | P***s: take it, you won’t regret it, excellent device
⭐ 5.0/5 | AliExpress Shopper: Good measuring device. Thanks to the seller for quality delivery.
⭐ 5.0/5 | A***i: Everything is excellent as always with FNIRS
⭐ 5.0/5 | B***h: Like it a lot ! take a notice that the plug has 5 contacts (not 3) , this is a real bridge meter!
⭐ 5.0/5 | С***в: Thanks to the seller. Customer support works great. The thing is, the parcel was delayed, and I had to go on vacation for 3 weeks, so I wrote, please, hold the delivery, as the post office only stores parcels for two weeks. And the seller did it. When I arrived, I wrote a letter again, and, literally, the next day the parcel arrived. Thanks to the Fnirsi team.
⭐ 5.0/5 | М***ч: Ease of use, informativeness. Automatic selection of the connected component. It would be nice to add Russian language.
⭐ 5.0/5 | AliExpress Shopper: Clear description and fast shipping. The product matches the description. The seller is always in touch. I recommend cooperation
⭐ 5.0/5 | S***I: All OK! Tested! Fully correspond to description! I am fully satisfied! Nice! Best Regards!
⭐ 5.0/5 | AliExpress Shopper: Very fast shipping, product as described and truly professional.
⭐ 5.0/5 | Б***ч: excellent device. Take it and you will be satisfied.
⭐ 5.0/5 | П***ч: Long delivery, but I think it’s not the seller’s fault. The device looks very solid, turned it on, everything seems to work. I haven’t figured out all the subtleties yet, but for its money, the device is very cool. I recommend the seller.
⭐ 5.0/5 | М***ч: Ergonomic device. Has calibration. I can’t say anything about L, C, and R measurements yet. As soon as I have the opportunity to compare with the readings of a verified device — I will add a review.
⭐ 5.0/5 | U***n: Thank you! Well packed. Very fast delivery to Moldova!
⭐ 5.0/5 | Е***ч: Excellent store packaging and the device itself is also excellent!
⭐ 5.0/5 | О***ч: The device is good, but before use, you need to calibrate it, in the menu, using the letter P, enclosed in the box
⭐ 5.0/5 | С***ч: 100% corresponds to the description. I recommend the seller. Thank you.
⭐ 5.0/5 | Н***ч: Good tester. Delivered quickly. Thanks to the seller.
⭐ 5.0/5 | b***k: Wery good equipment
⭐ 5.0/5 | Т***н: great device for its price
⭐ 5.0/5 | П***ч: Excellent device. Satisfied with the order.
⭐ 5.0/5 | V***a: The device is gorgeous. Delivery is very fast.
⭐ 5.0/5 | М***ч: everything works, arrived fully charged
⭐ 5.0/5 | AliExpress Shopper: excellent device, I am very satisfied.
⭐ 5.0/5 | З***р: good device I recommend 👍👍👍
⭐ 5.0/5 | И***о: excellent, only a case for the device is missing
⭐ 5.0/5 | y***k: Excellent device. Excellent seller, I recommend.
⭐ 5.0/5 | AliExpress Shopper: Very fast delivery, item exactly as described. Gladly again at any time, thank you very much
⭐ 5.0/5 | Ц***ч: With proper setup, it measures quite accurately even in-circuit.
⭐ 5.0/5 | С***ч: Everything is fast and high quality.
⭐ 5.0/5 | К***ч: Gorgeous device.
⭐ 5.0/5 | I***r: Good tool
⭐ 5.0/5 | R***F: FINIRSI arrived in a few days from China to Italy, perfectly functional, very nice, software 1.0 is installed, in my opinion it needs to be updated in the menu for full-scale capacitor values, it needs to be set with resistor values, to complete everything they could have provided a nice zippered case for the various accessories, all in all, great value for money ✨✨
⭐ 5.0/5 | А***й: The AliExpress machine works clearly. Well done! Compared with DE-5000, the readings are the same.
⭐ 5.0/5 | I***r: All ok
⭐ 4.0/5 | AliExpress Shopper: Excellent quality, very useful
⭐ 5.0/5 | Н***ч: I received the tester, I hope it will be a reliable assistant. Thank you.
⭐ 5.0/5 | Л***ч: Everything arrived normally. Thank you. Satisfied.
⭐ 5.0/5 | С***ч: all good. works
⭐ 5.0/5 | A***k: Fast delivery. All ok.
⭐ 5.0/5 | A***h: everything as stated
⭐ 4.0/5 | К***ч: The device is wonderful, but there are questions. -Will there be firmware with Russian language? — Questions about calibration, why don’t the standard probes calibrate?
⭐ 5.0/5 | А***в: Still trying but seems to work. Manual is incomplete
⭐ 5.0/5 | O***h: choice of measurement frequency, measurement voltages
⭐ 5.0/5 | Р***ч: Works.
⭐ 5.0/5 | Ш***ч: Dear friend! Thank you very much for my order. Everything arrived in perfect condition and in working order. I wish you success in your business. I plan to order goods from you in the future, while I hope for the same pleasant cooperation Regards, Alexey
⭐ 5.0/5 | И***а: quite accurate.
⭐ 5.0/5 | К***ч: Thank you. All good.
⭐ 5.0/5 | К***ч: good device.
⭐ 5.0/5 | J***n: product conforms
⭐ 5.0/5 | AliExpress Shopper: Looks pretty good
⭐ 5.0/5 | E***o: Ok
⭐ 5.0/5 | J***s: good
⭐ 4.0/5 | V***s: Incomplete user manual. Lack information how to use test accessories.
⭐ 5.0/5 | Т***ч: Functionality. Make button and parameter names consistent…
⭐ 2.0/5 | К***ч: FNIRSI LC1020E is not accurate, it underestimates the readings of high-precision 0.01% tolerance resistors from USSR defense industry. For example, 2.61 ohms the device shows 2.59 ohms — 5.66 ohms the device measures as 5.43 ohms and so on. The AD584 multimeter calibration board also measures with underestimation. Electrolytic capacitors are also not very accurately measured. Zoyi ZT-DQ01 measures accurately to hundredths. Even FNIRSI HRM-10 measures resistors much more accurately.
⭐ 5.0/5 | P***v: 👌

Pinout and Interface Map

Pinout Configuration: FNIRSI LC1020E

Below is the detailed pin mapping for the dual-MCU architecture:

Comparison table

Technical Specifications & Comparison FNIRSI LC1020E

Final summary

Final Verdict: FNIRSI LC1020E

The FNIRSI LC1020E stands out as an exceptionally capable and versatile handheld LCR bridge tester, offering a compelling blend of high precision, extensive measurement capabilities, and user-friendly features. While it may have minor limitations, such as less precise inductance measurements below 1µH for very high-frequency applications and the absence of a Russian language interface, its core strengths far outweigh these drawbacks. The device’s remarkable 0.3% basic accuracy, wide measurement ranges for L, C, and R, multiple test frequencies, and advanced functions like component comparison and data logging make it an ideal choice for hobbyists, radio amateurs, and professionals alike. Its robust calibration options, Kelvin test clips, and rechargeable battery ensure reliable performance and portability, making it a worthwhile investment for anyone needing accurate component analysis. The primary advantage of the LC1020E lies in its comprehensive feature set and high measurement fidelity, providing unparalleled confidence in component selection and circuit diagnostics. For more in-depth analyses, visit andibond.com.