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Reply To: | TechNet E-Mail Forum. |
Date: | Tue, 29 Aug 2000 14:58:46 -0500 |
Content-Type: | text/plain |
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Hi Folks,
Looking for some real world advice.
We're using high pin count BGA's from a manufacturer who recommends a PWB
flatness spec of .25%, The question is this: Is it reasonable to expect a
fabricator to consistently build a 16 layer, .125" thick PWB meeting a .25%
flatness requirement?
The board is 12.25" x 10.25", of balanced construction and has even copper
distribution.
Thanks,
Rick
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