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Tue, 17 Aug 2010 13:33:16 -0700 |
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IPC-6012 has no guidance on the management of non-functional lands (that
I can find) concerning registration and annular ring limits.
The scenario causing problems is designs where the non-functional pad
size is smaller than the functional pad size. I am not trying to debate
whether this is a good design practice.
What is the intent of IPC-6012? Should boards with registration and/or
annular ring failures on non-functional lands, with the smaller pad
size, be considered non compliant?
Randy
Randy Reed, CQE
Reliability Lab
Viasystems Group Inc.
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