I use Protel, here is the forum email address
http://groups.yahoo.com/group/protel-users/files/protelfaq.html
If you can find out anything you need from layout problems to bug's. You
will also get a faster response to your question then if you went to Protel
directly.
        As for the set up for doing a ball grid in Protel, Do your fan out
in the library and place the vias as well (if you plan to use the auto
router, sometimes the tracks you lock have a tendency to move) Protel has a
hard time with arcs as well. As for Spectra there are a few problems with
importing the design when you have blind and buried vias. The forum archive
can help you on that.
        If you use a lot of design rules have a lot of memory handy Protel
will chew it up like a sumo wrestler at an all you can eat buffet.
        If you have any questions you can e-mail me and I will try to help
all I can, but your best bet is to jump on the forum.

[log in to unmask]

Ted T

-----Original Message-----
From: crbuerke [mailto:[log in to unmask]]
Sent: Thursday, May 03, 2001 5:43 PM
To: [log in to unmask]
Subject: Re: [TN] BGA Design


I recently did the same thing and got a great deal of
help from Marty Krynock at World -Electronics

Don't have the number available but it Is on the web.
You can contact Marty at
[log in to unmask]

He will be very helpful.

Chuck
--- Colin Weber <[log in to unmask]> wrote:
> We are looking at using BGAs for the first time. In
> particular a 388 pin
> AMD processor chip, 1mm pitch.
>
>  I am looking for any tips and comments that can
> assist in my research into
> this. From a first glance I
> don't see that the use of such a device has to be
> difficult, but these
> things have a habit of needing certain
> precautions and design practices.
>
> Any help at all would be appreciated.
>
> PS: At this point in time it looks as though we will
> be forced to proceed
> with the design using Protel99SE.
> Anyone with experience with such designs and this
> version of Protel, I'd
> love to hear from you.
>
> Sincerely,
>
> Colin Weber
> Varian Australia Pty Ltd
>
>
> Regards,
>
> Colin Weber
>
>
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