These sorts of densities are now common place for us and others that are still around. We routinely build PCB's with BGA's of 1.0mm and .8mm pitches which require 8 mil vias and impedance lines down to 3 mils. Eddie Rocha Director of Engineering (408) 579-8282 Hi All, We've have a prospective customer coming in to see us in the near future, to build an assembly for them. Pretty dense, double-sided SMT, there's over 900 parts on a fab that's 5" X 5"...a good part of the part count are 0402's and 0603's. But that's not going to be the hardest part of this deal. In my mind it's going to be building the bare fab. It's a 14-layer board, with 3-mil lines and spaces., and has over 5,000 8-mil vias, over 1,100 10-mil vias, and over 400 24-mil vias. I'm wondering if anybody knows a fab house that is comfortable doing something like this. Just curious too, what kind of "ball-park" price would one expect to pay for a board like this. You can reply off-line if you wish...again, we don't have the business yet, just trying to get an idea of who the players are in building something like this. Thanks! -Steve Gregory- --------------------------------------------------- Technet Mail List provided as a free service by IPC using LISTSERV 1.8e 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 or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest Search the archives of previous posts at: http://listserv.ipc.org/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 1.8e 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 or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest Search the archives of previous posts at: http://listserv.ipc.org/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 -----------------------------------------------------