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Sat, 26 Jun 1999 08:18:00 EDT |
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Hi Charlie,
Specifications are for the most part somebody's guess of what might work
based on prior experience with a different design in a different application.
For something a little more directly applicable, you might want to look at
IPC-D-279, Design Guidelines for Reliable Surface Mount Technology Printed
Board Assemblies, Appendix B. This will let you assess the consequences of
reduced PTV barrel plating thickness as well as plating non-uniformity as to
reduced reliability for your application.
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], Website: www.engelmaier.com
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