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Date: | Wed, 3 Oct 2012 10:21:25 -0400 |
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Hi Victor,
In 600 rev. H page 109 they show inner layer separation if that helps
you.
It says that on class 2 and 3 none is acceptable. On class 1 boards you
can accept up to 20% separation.
I personally think that the standard should be none allowed.
Sincerely,
Paul Reid
Program Coordinator
PWB Interconnect Solutions Inc.
235 Stafford Rd., West, Unit 103
Nepean, Ontario Canada, K2H 9C1
613 596 4244 ext. 229
Skype paul_reid_pwb
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-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Victor Hernandez
Sent: October 3, 2012 9:00 AM
To: [log in to unmask]
Subject: [TN] IPC-A-600F, PTH internal capture pad pull away
Fellow TechNetters:
Once upon a time, in an earlier Rev of the above stated IPC standard,
there was material covering the above topic. I currently do not see
that topic with the stated document Rev. Is this still a concern for
PWB raw card qualification. Land pull away mat be associated with
internal layers/core misregistration.
Victor,
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