Hi Carson,
The only way you can monitor your products reliability is by extensive
accelerated testing. The reliability of your product depends on both the
quality of manufacture and the appropriantness of the design for the
application. What you really want to do is monitor the product's quality in a
continous manner; presumably the 'Design for Reliability (DfR)" (see IPC-
D-279, "Design Guidelines for Reliable Surface Mount Technology Printed Board
Assemblies") procedures have been used in the design phase and the design
relability has been verified (see IPC-SM-785, "Guidelines for Accelerated
Reliability Testing of Surface Mount Solder Attachments")  initally.
Some of the statistical information can be found in those documents, but the
frequency of verification will depend on the quality and maturity of your
manufacturing processes.

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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