Hey Werner and Richard

Thanks for the clarification.


Werner, unfortunately I will not be able to attend the LF Conference in Frankfurt this year...

Cheers,
Gebhard


-----Ursprüngliche Nachricht-----
Von: TechNet [mailto:[log in to unmask]] Im Auftrag von Werner Engelmaier
Gesendet: Freitag, 20. Oktober 2006 00:54
An: [log in to unmask]
Betreff: Re: [TN] AW: [TN] Tombstoning and nitrogen

Hallo Gebhard,
Der Grund dafür ist, daß die unterschiedlichen Ausdehnungskoeffizienten auch

ein Biegemoment erzeugen [klassische bimetallische Biegung]. Ich bin auch

nicht sicher, daß Chipkondensatoren nicht Druckspannungsabhängig sind.
Vielleicht sehen wir uns bei der IPC/JEDEC Konferenz in Frankfurt Ende

Oktobers.

ENGLISH:
The reason is that the differential CTEs create a bending moment [clasical

bimetallic strip]. Also i am not convinced that CCs like comressive stresses.
Maybe we can see each other at the IPC/JEDEC conference in Frankfurt at the

end of October.

Regards,
Werner Engelmaier
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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