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 > > ---------------------------------------------------------------------------- ----- > Technet Mail List provided as a free service by IPC > using LISTSERV 1.8d > To unsubscribe, send a message to [log in to unmask] > with following text in > the BODY (NOT the subject field): SIGNOFF Technet > To temporarily halt delivery of Technet send the > following message: SET Technet NOMAIL > Search previous postings at: www.ipc.org > On-Line > Resources & Databases > E-mail Archives > Please visit IPC web site > (http://www.ipc.org/html/forum.htm) for additional > information, or contact Keach Sasamori at > [log in to unmask] or 847-509-9700 ext.5315 > ---------------------------------------------------------------------------- ----- __________________________________________________ Do You Yahoo!? Yahoo! Auctions - buy the things you want at great prices http://auctions.yahoo.com/ ---------------------------------------------------------------------------- ----- Technet Mail List provided as a free service by IPC using LISTSERV 1.8d To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt delivery of Technet send the following message: SET Technet NOMAIL Search previous postings at: www.ipc.org > On-Line Resources & Databases > E-mail Archives Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ---------------------------------------------------------------------------- ----- --------------------------------------------------------------------------------- Technet Mail List provided as a free service by IPC using LISTSERV 1.8d To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt delivery of Technet send the following message: SET Technet NOMAIL Search previous postings at: www.ipc.org > On-Line Resources & Databases > E-mail Archives Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ---------------------------------------------------------------------------------