Is this due to RoHS solder?
Charles wrote in message
...
"Boris Mohar" wrote in message
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Took apart a Volvo 850 fuel pump relay. Cracks everywhere.
Some of the responses to your post are misleading. The dull, grainy look
is
normal with lead-free solder.
The cracks are not necessarily a fault. Surface cracks that we can see,
often do not extend deep enough to cause problems.
In any case, soldered joints have indeed been compromised by the new
"improved" lead-free alloys!
Mixing politics and engineering will almost always yield bad decisions.
.
This is why the likes of the aviation industry has a derogation to allow
continued use of leaded solder. Fuel pumps etc with PbF on a plane will soon
have them falling out of the sky.
They then have the problem of sourcing guaranteed PbF-free componentry ,
only single type production lines (PbF) around these days , generally
speaking , so insentive (serious mark-up) for a lot of fraudulent paperwork
and manifests etc , declaring the items are leaded when they are actually
PbF
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