Another issue,

The Tin/Pb components and systems stocks the companies will still have in
their warehouse on July 2006 are also not so friendly to
environment......and to P&L balance sheet....

Best  Regards

Reuven  ROKAH




                      Guy Ramsey
                      <gramsey@RDCIRCU         To:      [log in to unmask]
                      ITS.COM>                 cc:
                      Sent by: TechNet         Subject: Re: [TN] Lead Free is not Free, is Costly
                      <[log in to unmask]
                      >


                      19/11/2004 20:40
                      Please respond
                      to gramsey





Did anyone discuss the impact on plastic parts, and epoxy boards. What
board
laminate take multiple cycles above 240?C?
Or are we still living under the illusion that you can maintain a 5 degree
temperature delta across densely designed boards with modern wacko packages
and stay below 235?

-----Original Message-----
From: TechNet [mailto:[log in to unmask]]On Behalf Of Blair K. Hogg
Sent: Friday, November 19, 2004 1:27 PM
To: [log in to unmask]
Subject: Re: [TN] Lead Free is not Free, is Costly


I agree wholeheartedly.

I attended a seminar yesterday at Villanova University where Jim McElroy of
NEMI, Karl Seelig of AIM, Dennis Barbini of Vitronics Soltec and Jack
Geibig
of the Center for Clean Products and Clean Technologies at the University
of
Tennessee were presenters.

The primary take-aways were:

1. It is going to cost everyone more to manufacture lead-free products, due
to more expensive solder, higher energy requirements in processes, etc.

2. The reliability of lead-free solders and connections made with these
solders has not been proven.

And the most interesting part was that the study conducted by U of Tenn
showed that the use of SAC solders causes more harm to the environment than
the use of SnPb.

The UT website relating to this is at:
http://eerc.ra.utk.edu/ccpct/lfsp-projectinfo.html however, the results of
the study are not yet available there.

Blair

>>> [log in to unmask] 11/19/04 12:36PM >>>


        Good artlicle. A beginning of a movement in the right direction?






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