Test Frequency Range

The most important spec. Electrolytics are usually rated at 100/120 Hz, film and ceramic caps at 1 kHz, and switching-supply inductors and low-ESR caps should be checked at 10 kHz to 100 kHz. A 100 kHz meter covers nearly every hobby and power-electronics job.

Basic Accuracy

Look for 0.2% to 0.5% basic accuracy if you’re matching components or verifying designs. Remember it’s a best-case number; check the accuracy table in the manual for your actual range and frequency.

Secondary Parameters

D (dissipation), Q (quality factor), θ (phase) and ESR tell you far more than the primary value. ESR at 100 kHz is the fastest way to spot a dried-out electrolytic in a failing power supply.

Fixtures & Calibration

Kelvin (4-wire) clips, SMD tweezers and a 3-slot socket make a huge difference at low impedances. Open/short calibration removes lead errors; never trust a meter that can’t do it.

Logging & Sorting

USB or IR-USB logging, tolerance sorting and relative mode speed up incoming inspection and matching parts for audio or filter work. Nice to have, essential for production.

The ET430 from East Tester punches well above its price. It adds a 40 kHz step between 10 kHz and 100 kHz, reads primary and secondary parameters to five digits, and quotes a respectable 0.3% basic accuracy. For hobbyists who want real 100 kHz ESR and inductor measurements without paying for a big-name badge, it’s a very compelling alternative to the DE-5000.

👉 Check Price on Amazon →

The B&K Precision 879B is a staple of university labs and service benches. Its 40,000-count primary display, backlit dual screen, selectable test levels and USB (virtual COM) interface with SCPI-style commands make it easy to integrate into automated test or lab exercises. It tops out at 10 kHz, so it’s less suited to high-frequency ESR work, but for general component checks it is rugged, well documented and backed by a respected brand.

👉 Check Price on Amazon →

The UNI-T UT612 is a well-rounded 100 kHz handheld from a brand that’s already on many makers’ benches. It measures L, C, R and DCR with D, Q, θ and ESR, supports series and parallel modes, and its USB interface can log readings to a PC, which is handy for component inspection and incoming QC. It also runs from USB power, saving the 9 V battery during long sessions.

👉 Check Price on Amazon →

The FNIRSI LC1020E is the newest meter in this list and the most modern to use. A bright 2.8-inch colour TFT shows primary and secondary parameters together, and it brings features normally found on bench meters: adjustable test voltage and DC bias, 4-terminal (Kelvin) jacks, a 3-slot component socket, and a sorting/comparison mode with pass/fail alerts. A 3000 mAh battery charges over USB-C.

👉 Check Price on Amazon →

The UK-made Peak Atlas LCR45 takes a different approach: it’s a pocket-sized meter that automatically chooses the best test frequency (up to 200 kHz) and shows the complex impedance of the part. That makes it excellent for small inductors, RF chokes and coils where the 0.2 µH resolution and 200 kHz test signal shine. Its accuracy (around 1 to 1.5%) is lower than the handhelds above, but it’s simple, fast and very well built.

👉 Check Price on Amazon →

The FNIRSI LCR-ST1 puts an LCR meter into a pair of smart tweezers. Pinch a 0402 capacitor or an SMD inductor and it auto-detects the part, shows the primary value plus D, Q, Z, ESR and more on a small colour screen, and it even tests diodes. It’s not a precision instrument, but for sorting unmarked SMD parts and quick rework checks it’s far faster than any handheld with clips.

👉 Check Price on Amazon →

General electronics & repair?

Get the DER EE DE-5000: 100 kHz, full secondary parameters, clips and SMD tweezers in the box.

Professional or QA work?

The Keysight U1733C gives 0.2% accuracy, 20,000 counts and a brand your customers and auditors trust.

Want 100 kHz on a budget?

The ET430 or FNIRSI LC1020E both reach 100 kHz for far less than the big names.

Equipping a lab or classroom?

The B&K Precision 879B is rugged, well documented and USB/SCPI controllable.

Need to log readings to a PC?

The UNI-T UT612 logs over USB and can run from USB power during long sessions.

Winding coils or checking RF chokes?

The Peak Atlas LCR45 auto-selects up to 200 kHz with 0.2 µH resolution.

Mostly SMD rework?

Add the FNIRSI LCR-ST1 tweezers for fast, one-handed checks of tiny parts.

What’s the difference between an LCR meter and a multimeter’s capacitance mode?

A multimeter measures capacitance with a slow DC charge/discharge method, so it only gives a single value and can’t measure inductance properly or tell you anything about losses. An LCR meter drives the part with an AC signal at a known frequency and measures real impedance, so it reports L, C and R plus D, Q, θ and ESR, at the frequency the part will actually see in your circuit. For inductors, low-value capacitors and ESR checks, a multimeter simply isn’t the right tool.

Which test frequency should I use?

Match the frequency to how the part is used and how it’s specified. Aluminium electrolytics are usually rated at 100 or 120 Hz, film and ceramic capacitors at 1 kHz, and power inductors plus low-ESR capacitors in switching supplies are best checked at 10 kHz to 100 kHz. As a rule of thumb, small capacitances and small inductances measure more accurately at higher frequencies, while large capacitors and large inductors measure better at lower frequencies.

Should I use series or parallel measurement mode?

Use series mode (Cs, Ls, Rs) for low-impedance parts: large capacitors, small inductors and low resistances, where series resistance dominates. Use parallel mode (Cp, Lp, Rp) for high-impedance parts: small capacitors, large inductors and high resistances, where leakage dominates. Meters like the DE-5000 and U1733C choose automatically in auto mode, which is the right default for most users.

Can an LCR meter find a bad capacitor on a circuit board?

Measuring in circuit is unreliable because other components in parallel change the reading. The dependable approach is to lift one leg (or remove the part) and measure it out of circuit. That said, ESR measured at 100 kHz is the quickest way to confirm a suspect electrolytic: a dried-out capacitor can still read close to its rated capacitance while its ESR has climbed several times above the datasheet value.

Why do I need open and short calibration?

Test leads, clips and tweezers add their own stray capacitance, inductance and resistance, which can swamp the reading on small parts such as a few picofarads or a sub-microhenry inductor. Open calibration (leads apart) and short calibration (leads shorted) let the meter measure and subtract those errors. Recalibrate whenever you change fixtures or test frequency, and use the shortest leads you can.