WILLIAM KITCHEN wrote in a message to ROY J. TELLASON:

RJT> I have a board here that has a bunch of power FETs on it,  gotta 
RJT> dig up some specs somewhere.  (Grabbing board)  There seem to 
RJT> be four marked K707,  and five marked K799.

WK> A quick search on Google turns up nothing with those partnos. House
WK> numbered maybe?

Or maybe they're supposed to have "2S" in front of them?

WK> I suppose you could make an educated guess at their specs just by 
WK> measuring their on resistance, then look up some other mosfets in 
WK> the same package and with a similar RDS(on). That should at least
WK> narrow the range of possibilities, since RDS(on) and ID(on) are to
WK> some degree linked by the package's ability to dissipate power. And 
WK> conveniently,  breakdown voltage tends to be proportional as well 
WK> (inverse to ID(on)). Maybe assume the worst case specs to be safe.

I'll figure something out.  I haven't played with any of these yet,  and am
looking forward to getting around to it.

One of the nice things is the board they're on,  I can hold it up to light
and see traces through it,  which makes it easy to see some aspects of
things.  And which pin is which is also marked,  as well as some other
stuff.  Should make some aspects of this stuff easier...

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