Charming,
Both laminate thickness tolerance and foil thickness are referenced in IPC-4101. There are 8 tolerance "classes", A, B, C, D, K, L, M, and (X which is a tolerance agreed to between the user and supplier for laminates).
Dave Connitt CID+
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-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Charming Chan
Sent: Wednesday, July 07, 2010 11:43 AM
To: [log in to unmask]
Subject: [TN] Board thickness tolerance on IPC spec?
Hello All,
I checked IPC-6012, IPC-600 spec and can not find out any specification on board thickness tolerance. Which IPC spec has default board thickness tolerance specified? Thank you.
Best Regards
Charming Chan
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