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Power mosfet question

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Michael Kennedy

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Sep 20, 2010, 10:13:48 AM9/20/10
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I have a power mosfet that was shorted.. Due to my carelessness...

A very fine sliver of solder bridged the gate to the drain. Would this
usually destroy the said mosfet? Or something else in line with it??

Its a K3556... Is there a simple test for these? The drain pin was cut
off, but enough left to make a very fine solder bridge... ughh...


Michael Kennedy

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Sep 20, 2010, 10:24:29 AM9/20/10
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"Michael Kennedy" <mi...@nospam.com> wrote in message
news:fImdnSKviKex8QrR...@giganews.com...


Well scratch that.. If I'm holding the volt meter on the gate side of the
mosfet while starting up it will work... i guess I have to trace back and
see whats burnt up..


Jamie

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Sep 20, 2010, 8:38:50 PM9/20/10
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Michael Kennedy wrote:

yup. That would pretty much forward bias that fet beyond max!

Jamie

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Sep 20, 2010, 8:40:27 PM9/20/10
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Michael Kennedy wrote:

It's most likely if you didn't over bias the fet and kill it, you may
have destroyed the driving circuit since it most likely can only handle
a fraction of what is on the drain..

Michael Kennedy

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Sep 27, 2010, 6:26:36 AM9/27/10
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"Jamie" <jamie_ka1lpa_not_v...@charter.net> wrote in message
news:M0Tlo.61858$y85...@newsfe13.iad...

Actually I got lucky.. It was ok after all.


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