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Electronics => Electronics => Topic started by: BANE on February 27, 2011, 04:14:39 PM

Title: is a stuck mosfet fixable?
Post by: BANE on February 27, 2011, 04:14:39 PM

Hello all,
It turns out i accidently hooked up my N channel mosfet from radio shack wrong and now it is stuck open.  is it possible to un stick it or is it junk?

thanks

Title: Re: is a stuck mosfet fixable?
Post by: Soeren on February 27, 2011, 05:48:34 PM

Hi,

It's toast.

Title: Re: is a stuck mosfet fixable?
Post by: BANE on February 27, 2011, 06:04:38 PM

Quote

It's toast.

as i feared :'(.........good thing im passing by radio shack tomorrow

Title: Re: is a stuck mosfet fixable?
Post by: Soeren on February 27, 2011, 06:17:01 PM

Yes, you probably got either the gate-drain or the drain-source welded together internally.

A large-ish current through it might reveal which, by the voltage drop over it - drain-source welded would give a ~0V drop, gate-drain would have a slightly higher drop (but you may need to compare it with a good one by connecting the gate and drain).