"Colin Horsley" wrote in message
...

"Eeyore" wrote in message
...
The debate about lead free solders seem to be nearly as politically
charged as
that about anthropogenic global warming and a casualty seems to be useful
data.

I've read plenty of comments to the effect that lead-free is less
reliable in
the long term (vibration seems to be a key weakness AIUI - maybe also
thermal
cycling) which presumably explains the exemptions for certain categories,
yet
I've also seen some studies that claim it can out-perform lead containing
solders.

Is there any real hard and fast information out there that one can rely
on ?

Graham

Tin Whiskers:-

For those who though leaded solder was best.
Here is the problem with lead free solder.

http://pubs.acs.org/cen/science/85/8529sci1.html

Colin

Yes, a good write-up of the problems, and why leaded solder didn't suffer
from them.

Arfa