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August 1997

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Subject:
micro bga
From:
"Vertefeuille, Russ (AZ77)" <[log in to unmask]>
Reply To:
TechNet Mail Forum.
Date:
Thu, 7 Aug 1997 15:30:16 -0500
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Gentlemen,

I am looking for any feedback concerning PWB surface finishes for mounting
micro- BGA's.  HASL appears to not completely cover .012" diameter pads
consistantly, as well as coplanarity issues.  Should the surfaces be
plated??  Any help on this subject would be greatly appreciated..

Regards,

Russ Vertefeuille
Mfg. Process Eng.

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