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April 1998

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TechNet <[log in to unmask]>
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Date:
Fri, 24 Apr 1998 17:41:41 EDT
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"TechNet E-Mail Forum." <[log in to unmask]>, Engelmaier <[log in to unmask]>
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Subject:
Re: high temperature solders
From:
Engelmaier <[log in to unmask]>
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Hi Ed,
Thermal shock is NOT an accelerated test for loading due to thermal cyling.
The damage mechanism is different then thermal cycling and therefore passing a
thermal shock test does not assure 10 years of life in thermal cycling.
Thermal shock can be used for ESS and for HAST testing to increase general
robustness.

Werner Engelmaier
Engelmaier Associates, L.C.
Electronic Packaging, Interconnection and Reliability Consulting
7 Jasmine Run
Ormond Beach, FL  32174  USA
Phone: 904-437-8747, Fax: 904-437-8737
E-mail: [log in to unmask]

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