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Date: | Thu, 19 Oct 2006 18:53:59 EDT |
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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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