[sdiy] Tin Whiskers

[Harry Bissell Jr]

tin-lead plating (most common) eliminates this
problem. Its really an issue for our 'lead free'
future !

H^) harry


--- Glen <mclilith at charter.net> wrote:

> I've known about zinc and tin whiskers for a long
> time. They're common
> problems inside Hammond organs. The ironic part is,
> what was supposed to be
> a plating applied to a steel chassis to insure the
> longevity of the
> product, turns out to be what "kills" the circuitry
> mounted in or near the
> chassis. The problem seems much worse if you live in
> tropical areas, or
> very near the coast.
> 
> Did NASA mention that these whiskers are known to
> become airborne and land
> on nearby circuitry, causing current leakage, short
> circuits, and generally
> weird circuit behavior? It happens in the Hammond
> organs all the time.
> 
> I'm not sure what to do about whiskers on IC leads.
> Did NASA have any
> suggestions for suppressing whisker growth?
> 
> take care,
> Glen
> 
> 
> At 05:07 PM 1/11/05 , Roman wrote:
> 
> >that's scarry!
> >It's like we're all doomed, no matter what we do.
> >I have never imagined such a thing.
> >No wonder they make you replace the FCP every 2-3
> years.
> >Otherwise it would get covered in whiskers anyway
> >
> >Roman
> >
> >----- Original Message ----- 
> >From: "Scott Gravenhorst" <music.maker at gte.net>
> >To: <synth-diy at dropmix.xs4all.nl>
> >Sent: Sunday, January 09, 2005 2:27 PM
> >Subject: [sdiy] Tin Whiskers
> >
> >
> >> http://nepp.nasa.gov/whisker/photos/index.html
> 
> 
> 
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