.5 oz start and than plate up is common unless you have a need for more than
1oz copper on your outer layers.
James Hofer
Director of Operations
Accurate Circuit Engineering
3019 S. Kilson Dr.
Santa Ana Ca. 92707-4202
714-546-2162 work
714-473-6127 cell
[log in to unmask]
----- Original Message -----
From: "Cal Driscoll" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Wednesday, July 28, 2004 5:19 AM
Subject: [TN] 1oz Copper vs. .5 oz Copper
> Hi All-
>
> One of our PCB designers came to us with a recommendation from our Bare
> Board fab house-
> We typically use 1 oz copper and the fab house is asking us to use .5 oz
> copper and build it up to 1 oz.
>
> Since I am not a designer, so I would like some input from TechNet on this
> type of practice.
>
> Facts:
> 99% of our boards are used in Telecommunications products
> Most of our boards have QFP's in the 12 mil range
> Typically most of our boards have Gold pads/finish
>
>
> Thanks,
> cal
>
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