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Subject:	Re: DRAWING NOMINAL
From:	rgrant <[log in to unmask]>
Reply To:	TechNet E-Mail Forum.
Date:	Thu, 10 Oct 2002 13:38:03 -0600
Content-Type:	text/plain
Parts/Attachments:	text/plain (56 lines)

Hi Susan,

Nominal is the target dimension.  Assuming a perfect world, all the
dimension would measure exactly the nominal dimension.  Somewhere else on
that drawing the designer listed a tolerance, which is how much that
dimension can vary from the nominal or target.  If you add the tolerance to
the nominal or subtract the tolerance from the nominal, you will get the
maximum and minimum dimensions.

Ryan Grant

-----Original Message-----
From: [log in to unmask] [mailto:[log in to unmask]]
Sent: Thursday, October 10, 2002 12:44 PM
To: [log in to unmask]
Subject: [TN] DRAWING NOMINAL


What does it mean when a drawing lists a dielectric
thickness between layers on a multilayer as "nominal"?

I am used to seeing minimums and maximums, but really
do not know how to determine compliance if the value is
listed as "nominal".

Thanks
Susan Mansilla
Robisan Lab

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