> Harvesting generic electronic parts from old equipment simply isn't wort=
h
it
> today.

I have to disagree if your broke, (though it is far more convenient than
sorting/testing piles of chips) I currently have about 30 eeproms/flashes
and about a dozen ram chips from desoldering. Used works just fine in a
non-production environment.

> These could be in-house part numbers.

Thats what I had though originally, but its better to ask around a bit
before tossing the chips.

On Wed, May 11, 2011 at 8:07 AM, Olin Lathrop <olin_piclist@embedinc.com>wr=
ote:

> Jason White wrote:
> > Recently I desoldered several old PCB's I got around 25 mysterious
> > chips that seem to be manufactured by Texas Instruments. They are
> > labeled 81C285T on what (usually) is the part number line and 210895
> > on the date line (August, 21, 1995) in a 16 SOIC package. I also got
> > what i apparently a pin for pin compatible chip marked as INB627,
> > 1821-0895, by Motorola? from an identical PCB from another [same
> > model] board.
>
> These could be in-house part numbers.  Large companies will usually have
> internal part numbers for every part they use, and sometimes get the
> suppliers to label with these part numbers.  If that's the case, you're
> probably out of luck.
>
> Chips from old boards aren't likely to be all that useful for stuff you
> want
> to do today, even if you can find the documentation and the chip didn't g=
et
> damaged in the process.  You might find some 74xxx series logic chips, bu=
t
> you hardly use those anymore today and you can replace them with known
> working ones for a few 10s of cents at worst.  Any programmable parts wil=
l
> be so archaic by today's standard that you'd be better off getting a few
> free samples of something modern from Microchip.
>
> Harvesting generic electronic parts from old equipment simply isn't worth
> it
> today.
>
>
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Jason White - C++ Programmer and Electronics Hobbyist
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