Hi Danny,
Good soldering is an all-or-nothing proposition--either you are properly
wetted [more than enough strength for any purpose] or not [brittle failure occurs
with very little loading].
For what you are asling, there is no spec for this--what you need is ESS. 10
minutes vibration will give you interfacial failures if your ENIG
metallizations do not give you a good attachment interface ['Black Pad'].

Regards,
Werner Engelmaier
Engelmaier Associates, L.C.
Electronic Packaging, Interconnection and Reliability Consulting
7 Jasmine Run
Ormond Beach, FL  32174  USA
Phone: 386-437-8747, Fax: 386-437-8737, Cell: 386-316-5904
E-mail: [log in to unmask], Website: www.engelmaier.com

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