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August 2000

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Subject:
From:
"Lam, Patrick" <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Mon, 14 Aug 2000 14:27:27 -0700
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We would like to add two RCC layers each to the top and bottom of an 4-layer
FR-4 board. Does anyone have experience or suggestion to handle multi RCC
layers? We would like to have microvia connecting the top RCC layer to the
outer FR-4 layer, as well as having some microvias connecting both the RCC
layers to the outer FR-4 layer. Ideally, we would like to have microvias
connecting three layers without offset drilling. Is it possible to do the
following: Add one RCC layer, finish the microvia process, add another RCC
layer on top of the RCC layer, drill microvia at the same drill location as
the previous RCC layer.

Any information would be highly appreciated.

Patrick Lam
Glenayre R&D
Phone:(604)293.4392

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