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Bypass Diode Comprehensive Tester

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      Meets the bypass diode thermal test requirements in the 4.18 clause of the IEC 61215-2016 and MST25 clause of the IEC 61730 standard. Meets the bypass diode thermal runaway test requirements specified in the IEC 62979 standard. 

Intelligent control of the current value, emit pulse current within 1ms.

During pulse current, parameters such as pulse current, diode voltage drop, and junction box temperature are collected

Automatically simulate the relationship between VD and TJ by least squares method;

 Calculate the Vd of 75°C when the ID=Isc the TJ value at 75°C;

 All data can be exported in EXCEL format for  processing and analysis.

Test the functionality of the diode.

The time for forward power to reverse power supply is ≤10ms;

High-speed acquisition card collects voltage, current and temperature data during the conversion phase;



Pulse current


Current pulse width


Current pulse width accuracy


Pulse current accuracy


Pulse voltage range


Pulse voltage accuracy


Positive constant current range


Positive constant current accuracy


Forward voltage range


Forward voltage accuracy


Reverse voltage range


Reverse voltage accuracy


Reverse current range


Reverse current accuracy


Positive and negative power switching speed


Temperature monitoring range


Temperature accuracy


Temperature repeatability