Hi,
I need help from you all.
Currently Im testing IGBT forward leakage current.
Forcing 20V to the VGE, then measuring at the same time.
The measuring actually fluctuating a lot. Suppose correct measurement should be < 10uA, but it'll from pA to nA then uA jumping around.
Am I measuring the correct forward leakage current?
Need your expertise knowledge and help here.
Thanks.

 

Hi,
I need help from you all.
Currently Im testing IGBT forward leakage current.
Forcing 20V to the VGE, then measuring at the same time.
The measuring actually fluctuating a lot. Suppose correct measurement should be < 10uA, but it'll from pA to nA then uA jumping around.
Am I measuring the correct forward leakage current?
Need your expertise knowledge and help here.
Thanks.

If your ohmmeter lead polarities are correct that could indicate a leaky IGBT.

 

Absolute maximum VGE is typically ±20V for an IGBT.

Perhaps you are pushing the limit too much. What do you measure at (say) VGE=10V?