Eeyore wrote in
:

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



If it were better than lead solders there would not be any exemptions
needed, every thing would be required to be lead free. Critical (Mil,
Aero, etc)equipment gets an exemption though...

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