IPC 2222 9.1.5 table 9-1
Feature location tolerances
For largest x, y board dimension between 300 and 450 mm
Complexity level
A - 0.35mm
B - 0.25mm
C - 0.15mm


> -----Original Message-----
> From: TechNet [mailto:[log in to unmask]] On Behalf Of Steve Vargas
> Sent: Friday, January 17, 2003 10:52 AM
> To: [log in to unmask]
> Subject: [TN] PWB artwork
>
>
> Technetters:
>
> Can someone tell me what the requirements are for PWB artwork
> stretch? I have a 12" long board where the artwork appears to
> be about .004" longer than the data from the gerber files.
> This is causing us much heartache during our screenprint
> process. As you would expect, it is also causing problems
> with 0402 tombstoning and fine pitch soldering as well. I
> could not find this in IPC-A-600. Thanks.
>
> Regards,
> Stephen M. Vargas
> Polaris Contract Mfg. Inc.
> [log in to unmask]
>
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