is the mosfet gate damaged if it clamps to ~40% more than Vgs rating?

transients are typically short.

 

Hello,

There are absolute maximum values given in the datasheet of mosfets for the Vgs voltage.
Going over this value, the mosfet will likely not survive.

Post a schematic with all the details.

Bertus

 

is the mosfet gate damaged if it clamps to ~40% more than Vgs rating?

Yes. NEVER exceed the maximum ratings of any component.

transients are typically short.

It doesn't matter how short the transients are. The damage isn't caused by heat, but from puncturing through the gate oxide.

 

is the mosfet gate damaged if it clamps to ~40% more than Vgs rating?

Most likely.

transients are typically short.

Any allowable overstress from transients will be listed in the datasheet. If it isn't, then you should assume that it isn't allowed; or contact manufacturer to see if it's characterized.

 

MOSFET safe area and other characteristics -


https://assets.nexperia.com/documents/application-note/AN11243.pdf

https://www.infineon.com/dgdl/mosfet.pdf?fileId=5546d462533600a4015357444e913f4f


Regards, Dana.