Test, measurement and inspection equipment
The full Tonghui instrument range, plus inspection and cleanliness equipment we source from other manufacturers. Not sure which model fits? Tell us what you’re testing.
LCR meters, impedance and semiconductor analyzers
Tonghui’s core specialty since its first LCR meter in 1996: characterizing passive components, magnetics and power semiconductors.
| MODEL | DESCRIPTION | KEY SPECIFICATIONS |
|---|---|---|
| Semiconductor analyzers | ||
| TH521 SeriesNEW | Semiconductor parameter analyzer | Up to 3.5 kV / 1800 A; IV, C-V and gate charge for power devices |
| TH510 SeriesNEW | Semiconductor C-V characteristic analyzer | 1 kHz–2 MHz; Ciss, Coss, Crss, Rg; VDS 200 / 1500 / 3000 V |
| Impedance analyzers | ||
| TH2851 Series | Impedance analyzer | 10 Hz–130 MHz; 1 mΩ–100 MΩ; 0.08% |
| TH2848 SeriesNEW | Impedance analyzer | 4 Hz–10 MHz; 0.1 mHz step; 0.05% |
| LCR meters | ||
| TH2840 Series | High-speed LCR meter | 20 Hz–2 MHz; 0.1 mHz resolution; 0.05% |
| TH2836 Series | LCR meter | 4 Hz–8.5 MHz; 0.05% |
| TH283X Series | Compact LCR meter | 50 Hz–200 kHz; 1 mHz resolution; 0.05% |
| TH2810B+ | LCR meter | 100 Hz–10 kHz; dot frequencies; 0.1% |
| TH2822 Series | Handheld LCR meter | 100 Hz–100 kHz; dot frequencies; 0.1% |
| Automatic transformer test systems | ||
| TH2840X Series | Automatic transformer test system | 20 Hz–2 MHz; 24–288 pins |
| TH2829X Series | Automatic transformer test system | 20 Hz–1 MHz; 20–192 pins |
| DC bias current sources | ||
| TH1779NEW | DC bias current source | 0 Hz–2 MHz response; 0–50 A, parallel to 400 A max |
| TH1778A Series | DC bias current source | 0 Hz–2 MHz |
| Education | ||
| TH300E | Microelectronics teaching experiment system | Contact us for specifications |
Source/measure units, resistance and low-current meters
Precision sourcing and measurement down to femtoamps, plus resistance, insulation, battery and data-acquisition instruments.
| MODEL | DESCRIPTION | KEY SPECIFICATIONS |
|---|---|---|
| Power semiconductor & source/measure | ||
| TH500 SeriesNEW | PIV test system for power semiconductor devices | Contact us for specifications |
| TH199X Series | Precision source/measure unit | 6½ digits; 210 V; 3 A DC / 10.5 A pulse |
| TH193X SeriesNEW | Low-noise precision power supply | 6½ / 4½ digits; 210 V; 3 A DC / 10.5 A pulse |
| Low current & resistance | ||
| TH2690 SeriesNEW | fA/pA meter, electrometer, high-resistance meter | 6½ digits; ±3000 V; 0.01 fA; 3000 PΩ |
| TH2518 Series | Resistance / temperature scanner | 1 µΩ–2 kΩ; 90 channels |
| TH2515 | DC resistance meter | 0.1 µΩ–110 MΩ; temperature compensation; 0.01% |
| TH2516 Series | DC resistance meter | 1 µΩ–2 MΩ; temperature compensation; 0.05% |
| Insulation resistance | ||
| TH2692NEW | Insulation resistance meter | Contact us for specifications |
| TH2684/A | High-precision insulation resistance meter | 10–1000 V; 10 kΩ–100 TΩ |
| TH2683A/B | Insulation resistance meter | 1–500 V / 1000 V; 100 kΩ–10 TΩ |
| Multimeters, data acquisition & battery | ||
| TH1963/A, TH1953 | Digital multimeter | 1,199,999 counts |
| TH2554 SeriesNEW | Data acquisition | 6½ digits; up to 5 boards / 160 channels; 1000 readings/s |
| TH2523 Series | Battery tester | 100 µV–350 V; 1 µΩ–3.5 kΩ; 0.1% |
Power supplies, electronic loads and power meters
From benchtop linear supplies to 15 kW bidirectional systems for battery, EV and power-conversion testing.
| MODEL | DESCRIPTION | KEY SPECIFICATIONS |
|---|---|---|
| Programmable DC power supplies | ||
| TH6200 Series | DC power supply | Dual range, linear; 80–216 W |
| TH6300 Series | DC power supply | Wide range, linear; 200–600 W |
| TH6420 SeriesNEW | Multi-channel programmable linear DC supply | Multi-channel, linear |
| TH6430 SeriesNEW | Multi-channel source-load integrated supply | 1–4 channels; CH1/2 source & load; 32 V / 3 A |
| TH6400 Series | Triple programmable DC supply | Three channels, linear |
| TH6402B | DC power supply | Four channels, linear |
| TH6500 Series | High-precision DC power supply | Linear; 96–216 W |
| TH6700 Series | Programmable switching DC supply | 0–800 V / 0–100 A; 360–1080 W |
| TH6700A SeriesNEW | Programmable switching DC supply | Contact us for specifications |
| TH6900 Series | Programmable DC power supply | 0–1000 V / 0–200 A; 750–3000 W |
| Bidirectional & high-power | ||
| TH6600 SeriesNEW | Programmable bidirectional DC power supply | 5–15 kW; 0–1000 V; 0–360 A |
| TH6600P SeriesNEW | Programmable DC power supply | Contact us for specifications |
| TH6600L SeriesNEW | Programmable bidirectional DC electronic load | Contact us for specifications |
| Programmable AC power supplies | ||
| TH7200 SeriesNEW | Programmable AC/DC power supply | Contact us for specifications |
| TH7100 Series | Programmable AC power supply | 0–300 V; 500 W–2 kW; 45–500 Hz |
| DC electronic loads | ||
| TH8200 Series | Programmable DC electronic load | 175–1050 W |
| TH8300 Series | Programmable DC electronic load | Modular, 2/4/5/10 channels; 100–400 W |
| TH8400 Series | Programmable DC electronic load | Economy; 175–350 W |
| Digital power meters | ||
| TH3300 Series | Digital power meter | Single channel; 0.15%; 450 Hz |
| TH341X / TH342X | Multi-channel digital power meter | 1 / 3 / 4 channels; 0.15%; 450 Hz |
| TH343X / TH344X | Multi-channel digital power meter | 1 / 3 / 4 channels; 0.1%; 100 Hz |
Hipot, safety compliance and harness testers
Production-line safety testing for appliances and power products, plus winding and wire-harness verification.
| MODEL | DESCRIPTION | KEY SPECIFICATIONS |
|---|---|---|
| Hipot & safety compliance | ||
| TH9130 Series | Multifunction safety compliance analyzer | 7-in-1: ACW, DCW, IR, GB, LC, continuity, electrical properties |
| TH9130S SeriesNEW | Multifunction safety compliance analyzer | 5-in-1: ACW, DCW, IR, GB, continuity; 8-channel option |
| TH9120 Series | AC/DC hipot tester | TH9120A: AC 10 kV / 20 mA · TH9120D: 12 kV / 10 mA |
| TH9110 Series | AC/DC hipot tester | AC 5 kV / 100 mA; DC 6 kV / 25 mA; 500 VA |
| TH9200 Series | AC/DC hipot tester | Contact us for specifications |
| TH9320-S4/S8 | Multi-channel AC/DC hipot tester | AC 5 kV / 20 mA; DC 6 kV / 10 mA; 4 / 8 channels |
| TH9310 / TH9320 | AC/DC hipot tester | AC 5 kV / 20 mA; DC 6 kV / 10 mA |
| TH9010 Series | Parallel 8-channel hipot tester | AC 5 kV / 10 mA; DC 6 kV / 5 mA |
| Impulse winding & ground bond | ||
| TH2883S8-5 / S4-5 | Multi-channel impulse winding tester | 300–5000 V; 4 / 8 channels; ≥10 µH |
| TH2883 Series | Impulse winding tester | 100–1200 V / 5000 V / 10000 V; ≥1 µH |
| TH9410A / TH9411A | Ground bond tester | AC 0–32 / 45 A; 0–600 mΩ |
| Cable & wire-harness testers | ||
| TH600 SeriesNEW | Modular wire harness & cable test system | Up to 5120 channels; 1 µΩ; ACW 2 kV; DCW 3 kV |
| TH8601/A | Cable / harness tester | 64 / 128 pins |
| TH8602 Series | Cable / harness tester | 64–256 pins; USB Type-C |
| TH8603-4 Series | Cable / harness tester | 512 pins |
| TH8610 Series | Cable / harness tester | 128 pins |
Test fixtures, leads and cables
Tell us your instrument model and the parts you’re testing, and we’ll quote compatible fixtures and accessories.
Specifications are summarized from Tonghui’s 2025 catalog and may change without notice. Ask us for full datasheets.
Inspection, metrology and cleanliness equipment
Need equipment outside the Tonghui range? We source it from other manufacturers and handle the quote, order and delivery as your single US supplier, with the manufacturer’s warranty.
Digital microscopes
High-magnification inspection and failure analysis, with motorized stages, free-angle observation and 3D measurement.
e.g. KEYENCE VHX series · 20×–6000×3D optical profilers
Non-contact, wide-area 3D measurement of surface shape, flatness and profile, with rotation units for complex parts.
e.g. KEYENCE VR seriesIonic cleanliness testers
Localized cleanliness testing and residue extraction for printed circuit assemblies, to catch contamination before it causes field failures.
e.g. Foresite C3Brand names are trademarks of their respective owners and are used only to identify products. WalTech USA sources these products on request and is not an authorized distributor of these brands.
Found the model you need?
Send the model number, quantity and ship-to location for a quotation.