At 06:51 PM 12/21/2006, Ron D'Eau Claire wrote...
I hope we didn't drive you away with the answers, Rob!
Keep in mind that there is NOTHING wrong with the quality and
durability of
joints that lead-free solder makes. It's great stuff that works very
well.
It's very premature to make that claim.
There are real concerns that lead-free solders are less reliable. Lead
free solder joints are more fragile -
http://www.pcbrc.com/dev/PDFs/WhitePaper-SACfragility1.pdf Little is
known about how to avoid the "tin whisker" problem, and the
corresponding reliability issues -
http://ap.pennnet.com/Articles/Article_Display.cfm?Section=ARTCL&ARTICLE_ID=233627&VERSION_NUM=2&p=95
It's interesting to note that many life critical systems (medical,
aerospace, military) are exempted from RoHS.
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