In a message dated 6/16/00 10:51:22, [log in to unmask] writes:
>Hi Technet, I need to know what problems could arise over time if the solder
>fill on a plated thru hole is less than 75%.
>All the modules that exhibit this visible defect pass functional parameter
>testing at room temp.
>Jason

Hi Jason,
The answer is: It depends.
You do not say whether you are talking about a PTH or PTV, what the drilled
hole diameter is, what the PCB thickness is, what the Cu plating thickness
is, what the application (cyclic severity of the operational environment) is,
how long the design life is.
The answer to these questions will vary the answer to your questions from
'None' to 'Reduced Functional Life/Reliability'.

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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