17 Nov
2006
17 Nov
'06
10:29 a.m.
--- William Donzelli <wdonzelli at gmail.com> wrote:
Be careful when pulling chips - you just can not do
this willy nilly
and expect nothing to happen. Everytime a chip goes
thru a heat cycle
like soldering (or unsoldering) you damage the chip.
There is no way
around this. Even the first cycle, when the chip
leaves the tube (or
tape) for the first time, to be stuck to the board,
the chip takes a
beating internally. Obviously the manufacturers make
the chips to get
thru this first heat, but generally not any (or
many) other cycles.
In the real world, a tech that unsolders chips and
reuses them tends
to be shown the door quickly by the QC guys.
so if you presumably (probably? possibly?) eliminate
any heat getting to the ic's innards by the method I
described, you're likely doing no damage to it?
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