[What is worse is that we are increasingly appearing to be an industry
are sheep willingly following the blind shepherds of EU parliament... ]
Joe,
The silence of the lambs before slaughter....
-----Original Message-----
From: Leadfree [mailto:[log in to unmask]] On Behalf Of Joe Fjelstad
Sent: Thursday, May 11, 2006 11:25 AM
To: [log in to unmask]
Subject: Re: [LF] Tin whisker position and China translation
Thanks Dave,
I quickly found the operative phrase from the iNEMI release...
"Although it is not possible to guarantee that whiskers will not grow
under field conditions...
In the spirit of full disclosure, it also goes on to say...
...the mitigation practices detailed in JP002, combined with the test
and acceptance criteria outlined in JESD201, form the cornerstone of a
three-fold strategy of mitigation practices, process controls and
verification testing that helps to reduce the risks of tin whiskers.
This standard set of testing requirements and associated acceptance
criteria are crucial to users, who want to ensure product reliability,
as well as to suppliers, who can now proceed with one set of criteria
to test and evaluate their finishes rather than trying to meet varying
requirements from multiple customers."
Joe Smetana (the tin whisker task group chair quoted) is based on my
interactions with him in the past, an honest individual and an
excellent and talented engineer and when he says it is not possible the
guarantee that tin whiskers will not grow, I believe him. Mitigation
only the committee reports and then with no guarantee.
Unfortunately what was not said (or not allowed to be said?...perhaps it
is in the report) is that by using lead in the solder, it is possible to
vastly improve mitigation of such risk to the point where it is
vanishingly small, if not precluded altogether.
Who was it that decided that 0.1% was the number again? What was their
reasoning? Why not 1%? Why not 0.01%? Why remove lead from solder at
all? What science was used?
No matter how much lipstick one puts on this beast, it is still a
beast. I liken lead-free to a modern day "Golden Calf", which the
industry now dutifully bows to and worships but like the biblical
counter part, it is no less a false god when it comes to protection of
human health and the environment.
What is worse is that we are increasingly appearing to be an industry
are sheep willingly following the blind shepherds of EU parliament...
except perhaps for the Swiss watch makers that is, whose timing was
excellent (and will now likely remain so... ;-)
Hmmmm.. I think I am going to go buy a Swatch so I can make certain I
have the correct time after July 1st rolls around... ;-)
Very best,
Joe
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