Hopetech HT3545 Precision Resistance Tester

With a minimum resolution of 0.1 μΩ, the HT3545 DC resistance tester is ideal for high-resolution applications.


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Product number: HT3545
Manufacturer: Hopetech


The HT3545 Precision DC Resistance Tester is one of the most accurate DC Resistance Testers in the industry. The minimum resolution of the HT3545 DC Resistance Tester is 0.01 μΩ. Its basic accuracy of 0.01% is well suited for inverter motor inspection and other areas that require high-resolution resistance measurement. The HT3545 features high speed test lead anomaly detection and extremely short measurement cycles with a maximum sorting speed of 2.2 measurements per second.


  • Thermoelectric Compensation (OVC)
  • Test range 0.01μΩ to 1200 MΩ
  • Resistance measurement with low power
  • Test wire break detection function, suitable for OS inspection of automatic production line
    D/A output
  • Automatic test function
  • External control I/O port, RS-232 interface, Ethernet port, temperature test interface, analog input and output port, especially suitable for supporting automatic devices to carry out automatic tests.

Application areas of the HT3545 series

HT3545 single channel tester is applied to small signal contacts, small fuses, wires, small magnetic parts, motor coils, transformer coils, solenoids, chokes, wire harnesses, connectors, relay contacts, fuses, resistors, conductive coatings, conductive rubber.

    • Suitable for resistance testing that requires high accuracy
    • Used for testing high speed and multi test point resistors
    • When sorting large quantities of electronic components quickly
    • For measuring the resistance of materials with high, medium and low conductivity.
    • Suitable for characterizing the low resistance characteristics of electromechanical components under the conditions of low current of 100mA and low open circuit voltage of 30mV

Application-specific functions


Each test end is divided into 2 test lines, and a constant current source is added between the test lines. If the DUT is shorted at the end of the test, the current source outputs a low level, otherwise a high level. To check whether the test object or test lead has good contact.

Widerstandstester Kontaktprüfungsfunktion

Broken test leads and poor contact with the test object lead to incorrect assessments of the insulation test, which can lead to defective products on the market. In order to prevent this kind of situation, the device have a standard contact checking function, which can report the disconnection or bad contact to prevent the above situation.


Some circuit boards with high requirements in aerospace, automotive electronics etc. require testing of their vias and traces. Supporting multi-channel switching devices, the HT3545 precision resistance tester offers its sampling and switching at a speed of 2 ms per channel.

Other fields of application

Technical Data

Model comparisonHT3542-min
Display8.9 cm TFT LCD display
Measurement parametersDC resistance
Test scope10mΩ~10MΩ,12 ranges
Current (measurement)DC 1A-0.5uA
Measurement accuracy±0.01% reading.±0.001%f.s.
Measuring range10mΩ/100mΩ/1000mΩ/10Ω/100Ω/1000Ω/10kΩ/100kΩ/1000kΩ/10MΩ/100Ω/1000Ω/1000Ω>
Measurement speedFAST(2.2ms), MED(50Hz:21ms,60Hz:18ms), SLOW1(102ms),SLOW2(202ms)
Maximum test currentDC 1A | Max 5.5V
TemperatureRange -10°C ~99.9°C | Accuracy ±0.5°C
CorrectionShort circuit reset
comporatorHIGN/IN/LOW sort, 10 bin out
Trigger ModesInternal / external / bus / manual trigger
Internal data storageSupport with PC software and storage in PC
signal sourceAC 1kHz | Test current: <150mA
Other functionsTemperature correction, line frequency setting
InterfacesExternal I/O, analog, LAN, RS232
memorySupport with PC software and storage in PC
Power supplyVoltage: 100VAC~256VAC | Frequency: 50Hz~60Hz;
Dimensions & weight325mm (L) x 215mm (W) x 96.5mm (D) | 2 kg