Gate source leakage current of MOSFET...at high temperature?

[opampsmoker]

Hi,
The SISA40DN FET has 100nA of gate_source leakage current at 25degc.
Do you know what it is at 85degC?....roughly.?

SISA40DN Mosfet:
https://www.vishay.com/docs/76681/sisa40dn.pdf

 

[crutschow]

Depends upon whether the gate has Zener protection of the gate or not (and the data sheet doesn't state that).
If it does, as a rough guess you could assume the current doubles for every 10C rise in temperature, which gives about 6.4uA @ 85C.
If not, then the leakage should not change much with temperature.