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Thu, 31 Oct 1996 19:16:06 +0800 |
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Hi,
I read an article today and came across "Punched Vias"......
Has anyone come across the Punched vias technology? Where is this technology
commonly used? What are the design guidelines, I mean the annular ring and
the
small achievable mass-production holesize? And what are they limitations?
Appreciate any information.
Stella Yap
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