I've designed 388 pin BGA on 2 signal layer (4 layer board), you can do it
104 pin easily.

> -----Original Message-----
> From: Mark Mainland [SMTP:[log in to unmask]]
> Sent: Tuesday, August 20, 2002 4:26 PM
> To:   [log in to unmask]
> Subject:      [DC] 104 pin BGA
>
> Hello,
> Is it possible to break out on only 2 layers with a 104pin BGA? Its going
> on a 6 layer and the customer only wants traces on top and 1 internal
> layer!
>
> Thanks,
> Mark
>
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