Kenny, unless the geometries are so tight that good yields are
impossible, fewer layers are always cheaper than more.

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Bloomquist, Ken
Sent: Wednesday, April 06, 2005 1:15 PM
To: [log in to unmask]
Subject: [TN] Board Cost

Good afternoon from the Great Northwet,

I was just asked to sign off on a PWB drawing that is a four layer board
with 3 oz. copper on each layer. According to engineering they have to
have 3 oz. copper or equivalent. They are small boards, about 2" X 3"
and not very dense. They have three through-hole circular connectors and
some wire entry holes. They are laid up in a tab route with eight
boards.

My question is, would it be cheaper to have a multilayer board with
additional 1 oz. copper layers to equal the 3 oz. they need or the way
they designed it?

Thanks,

KennyB

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