I do not know about the PICs, but...
Some weeks ago I had a problem in a PowerMosfet from Philips and after I
sent some units for evaluation they replied with some nice pictures of th=
e
die they decapped using HNO3:H2SO4 at 85=BAC and the explanation of the
problem and the causes.

Marcelo Y.

Olin Lathrop wrote:
> > When decapsulating a PIC, why is Hot Fuming Nitric acid used instead =
of
> > just Hot Nitric acid?
> It's hard to imagine a legitimate reason for doing this.  Perhaps you
> could provide one so that people don't feel they are helping you do
something
> they would dissapprove of?

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