At 09:31 PM 6/13/2010, pdooley wrote:
>Hmmm, can transistors stick in the "activated" state?
>David?

As a rule, a transistor that fails from overcurrent will fail open
because it melts. If it fails from overvoltage it tends to fail short
because the internal diode(s) or insulating layers have been
punctured.  Overvoltage for high-impedance transistors like FETs
definitely includes plugging and unplugging things with the power
on.  And failures can be cumulative.

Yours,
David