Hello Dennis,
Some lead-free solders have been in use in niche, electronic applications
(e.g. eutectic SnBi, SnAg) for a long-time, way before politicians got
involved.
The driving factors were soldering hierarchy (SnBi has a low melting
point) or high temperature environment (e.g. SnAg under the hood). In cases i am
familiar with, most did their reliability homework before taking the
plunge. In one instance, the prevalent methodology had been: "it looks good, we
can ship", which resulted in field failures.
All the best,
Jean-Paul
In a message dated 1/19/2010 3:45:15 P.M. Eastern Standard Time,
[log in to unmask] writes:
Let me pose the same question I did recently in the aerospace/defense
community -
"Now that cellphone and laptop manufacturers have been exposed/adopted
lead-free solder, would they go back to leaded solder"?
I maintain that now that the engineering is done to learn lead-free, there
are scientific reasons to keep many products lead-free. Do you agree that
even though lead-free costs more per gram, there are electronics
constructions where lead-free is worth the extra cost, based on performance?
More fodder.
Denny Fritz
SAIC, Inc
Quote of the month (not necessarily monthly):
"Quality means doing it right when no one is looking", Henry Ford.
_______________________________________________
Jean-Paul Clech
EPSI Inc. -- There is no short cut to reliability.
P.O. Box 1522, Montclair, NJ 07042, USA
tel. & fax:+1 (973)746-3796
_http://www.jpclech.com_ (http://www.jpclech.com/)
-------------------------------------------------------------------------------Leadfee Mail List provided as a service by IPC using LISTSERV 1.8d
To unsubscribe, send a message to [log in to unmask] with following text in
the BODY (NOT the subject field): SIGNOFF Leadfree
To temporarily stop/(start) delivery of Leadree for vacation breaks send: SET Leadfree NOMAIL/(MAIL)
Search previous postings at: http://listserv.ipc.org/archives
Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815
-------------------------------------------------------------------------------
|
