Hi Jeff,
Thirty-two daisy-chains of eight capacitors in series were used to increase
the number of capacitors on test from 32 to 256 without having to increase the
monitoring capacity, which is expensive.
I would also like to point out, that SM-785 "Guidelines for Accelerated
testing..." is really not a good tool for 'process validation', it has much
more to do with assuring that the design of your assemblies is suited for its
application——'Design For Reliability (DfR).

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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