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June 2005

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Subject:
From:
Eddie Rocha <[log in to unmask]>
Reply To:
Date:
Wed, 15 Jun 2005 16:23:55 -0700
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That's not a good pass/fail gate. You can avoid breakout while being
off on layer-layer by more than .005. What you achieve as an
annular ring is directly related to the board design (pad to drill ratio)
and it's not necessarily related to layer-layer registration.

On 15 Jun 2005 at 16:04, Peter Lee wrote:

Technet,

I am looking for an acceptance criteria on PCB layer-to-layer
registration. The pcb is 4 layer and 8x4". I was informed by our PCB
vendor that they can conform to +/-0.005" and the pass/fail gate is
no annular ring breakout. Can someone please confirm?



Rgds,

Peter

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-- Thanks,
Eddie Rocha
South Bay Circuits
(480) 940-3125 x122

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