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Mon, 12 Mar 2001 13:53:30 -0500 |
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Patrick,
Suggest you use IPC-2222, Section 9.1.5 and Table 9-1. The fabrication
tolerance is dependent on the producibility level and maximum board
dimension.
If your fabricator is telling you a total of 0.003" (plus/minus 0.0015"),
not bad! If plus/minus 0.003", may still be within IPC standards; you be
the judge of what you truly need.
IMHO,
Roger M. Stoops, C.I.D., PCB Designer
"Lam, Patrick"
<Patrick.Lam@GLE To: [log in to unmask]
NAYRE.COM> cc:
Sent by: TechNet Subject: [TN] Layer to Layer registration
<[log in to unmask]
>
03/12/01 01:01
PM
Please respond
to "TechNet
E-Mail Forum.";
Please respond
to "Lam,
Patrick"
Can someone tell me:
What is the maximum layer to layer mis-registration allowance for a 6-layer
PCB?
I have been specifying 0.0015", is asked to change to 0.003" by a new
supplier. I forgot where I got that 0.0015.
Please help!
Patrick Lam
Phone:(604)293.4392
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