is a stuck mosfet fixable?

[BANE]

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

[Soeren]

Hi,

It's toast.

[BANE]

It's toast.

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

[Soeren]

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).