Hi Jeff,
1.) This information is contained in Appendix A of IPC-D-279, 'Design
Guidelines for Reliable Surface Mount Technology Printed Board Assemblies'.
2.) Software that makes reliability estimates can be a dangerous thing--the
relationships involved have high sensitivities to some of the input
parameters and thus bad inputs can give grossly incorrect answers. That is
why I have refrained from marketing the information in Appendix A of
IPC-D-279, 'Design Guidelines for Reliable Surface Mount Technology Printed
Board Assemblies', which I contributed, in software form. I do, however,
generate reliability estimates for the designs of my clients, and issue full
reports that give solution options should the original design prove to
provide inadequate reliability for the intended application. I also give
workshops on the reliability of solder joints and circuit board PTHs and
vias.

Werner Engelmaier
Engelmaier Associates, L.C.
Electronic Packaging, Interconnection and Reliability Consulting
23 Gunther Street                                In December:                                            Jasmine Run
Mendham, NJ  07945                                                                  Ormond Beach, FL  32174  USA
Phone & Fax: 973-543-2747                         Phone: 904-437-8747, Fax: 904-437-8737
E-mail: [log in to unmask]

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