Hello friends , We have a BGA chip with 0.3 mm pitch & 0 .1 mm ball dia. Obviously it is difficult to route the inner row balls.Targeting a two layer card. I wanted to understand 1)What is the smallest Dia Via & pad possible with the Fab houses. 2)Thinnest tracks possible & the min clearances required. 3)List of Fab houses who have these kind of capabilities (Any where in the world). Appreciate any help in this regards.Thanks !! Best regards Sunil B --------------------------------- Everyone is raving about the all-new Yahoo! Mail beta. ------------------------------------------------------------------ To unsubscribe from si-list: si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field or to administer your membership from a web page, go to: //www.freelists.org/webpage/si-list For help: si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field List FAQ wiki page is located at: http://si-list.org/wiki/wiki.pl?Si-List_FAQ List technical documents are available at: http://www.si-list.org List archives are viewable at: //www.freelists.org/archives/si-list or at our remote archives: http://groups.yahoo.com/group/si-list/messages Old (prior to June 6, 2001) list archives are viewable at: http://www.qsl.net/wb6tpu