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March 2007

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From:
"Louis, Edwin @ CSE" <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, Louis, Edwin @ CSE
Date:
Thu, 29 Mar 2007 15:27:58 -0400
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Werner, would you know where I can find the temperature dependent relationship  for the modulus of elasticity for SAC305 solder?

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Werner Engelmaier
Sent: Friday, March 23, 2007 5:52 PM
To: [log in to unmask]
Subject: Re: [TN] T260 tests

Hi Dave,
It is quite a bbit more involved than just T260, or T288 or T300 for that 
matter. That is one of the reasons I developed the STII-concept, which while 
great for an initial selection approach, also does not address all the needed 
issues for successful lead-free assembly.
That is why I have developed my White Paper: "Recommendations for PCB FAB 
Notes and Specifications in Printed Circuit Board Drawings for SnPb and Lead-Free 
Soldering Assemblies, the Qualification of PCB Shops and Activities to Assure 
Continued Quality."

Regards,
Werner Engelmaier
可靠性先生
Engelmaier Associates, L.C.
Electronic Packaging, Interconnection and Reliability Consulting
7 Jasmine Run
Ormond Beach, FL 32174 USA
Phone: 386-437-8747, Cell: 386-316-5904
E-mail: [log in to unmask], Website: www.engelmaier.com



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