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jrenkin 3rd January 2012 01:29 AM

mosfet failure
How would one know if they had a mosfet fail?

nigelwright7557 3rd January 2012 01:36 AM

Quite often they go short circuit from drain to source.
Check it with a multimeter on the ohms setting.

I have seen a gate to source short as well but only once.

jrenkin 3rd January 2012 07:15 PM

thank you

jrenkin 6th January 2012 07:19 PM

I measure 17K ohms across the d-s for a disconnected never used 2sk3563, the same as my used ones, when disconnected. Does that seem right?

rknize 6th January 2012 07:39 PM

Google for it. There are a few simple techniques to test the gates.

piano3 25th April 2013 09:54 PM

can one fail drain to gate?

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