Bob, et al., you might have a look at IPC-2222 which has some information about cutouts and the like.  It's the closest thing I can see related to your question.  We get drawings with no tolerances on them occasionally, and, if the customer will not resolve the matter, I tell the guys (as our quotes say) to use the broadest tolerance in IPC-2222. Louis Hart

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Ahne Oosterhof
Sent: Friday, July 31, 2015 3:22 PM
To: [log in to unmask]
Subject: Re: [TN] PCB length/width tolerance

Probably falls in the same category as the precision of the locations of pads on the board: Whatever the drawing specifies!

Ahne.

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Bob Lazzara
Sent: Friday, July 31, 2015 11:28 AM
To: [log in to unmask]
Subject: [TN] PCB length/width tolerance

Dear TechNetters:

Can anyone point me in the direction of a standard/reference that defines tolerance for PCB size (length and width)?

The -2221, Fig. 5-1, shows ± 0.016". This seems quite generous but I can find nothing else.

Thanks in advance -

Bob Lazzara

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