don,

your definition is correct. there are no tolerances associated with a nominal dimension.  it's just used for general identification purposes.

phil

-----Original Message-----
From: Don Vischulis [mailto:[log in to unmask]]
Sent: Thursday, October 10, 2002 1:42 PM
To: [log in to unmask]
Subject: Re: [TN] DRAWING NOMINAL


Susan,

I've always intrepreted nominal to mean a design value with no tolerance.
An example would be referring to .062 and .059 laminates as one-sixteenth
inch nominal.

Don Vischulis

-----Original Message-----
From: TechNet [mailto:[log in to unmask]]On Behalf Of [log in to unmask]
Sent: Thursday, October 10, 2002 1:44 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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