Typically it would be  a  .013 dia finish hole, Manufacture drill would probably be .018 dia.
So if you add .014 too .018  you get an .032 dia pad.  This you then adjust depending
on trace width technology and many other factors, like via pitch, gnd and power plane webbing
between vias.  .032 minus .050 = .018.  If your anti pad is plus 5 or 6 mils per side then
your left with .008 and .006 of copper webbing on your planes.

hope this helps

Greg Scott
Cray Inc.


Jorge Rodriguez wrote:

> What would be the standard via hole size for a 4-6 layer/0.062" board? This
> would be without pushing the technology to the edge or incurring on extra
> cost, just the industry standard.
>
> Thanks for your comments
>
> Jorge Rodriguez
> Process Engineer
> Varian Electronics Manufacturing
> 615 South River Drive
> Tempe, AZ 85281
> Phone: (480) 968-6790 X 4258
> Fax: (480) 829-4000
> E-mail: [log in to unmask]
>
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