Barbara,

a good practice is to put two diagonally opposed fiducials in two corners of
the footprint.
But, I never needed local fiducials for the BGAs, they don't need such a
perfect alignment.

Ioan


> -----Original Message-----
> From: Barbara Burcham [SMTP:[log in to unmask]]
> Sent: Wednesday, April 05, 2000 2:06 PM
> To:   [log in to unmask]
> Subject:      [TN] BGA - fiducials?
>
> I need information on where to put fiducials on a 256 pin, 50mil pitch
> BGA,
> please.
> What does assembly need?
>
> Barbara Burcham
> Fairfield Industries
>
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