Sankar, I don't think there are any general guidelines for routing such a fine pitch part. What is true is that you will need to use blind vias to connect it to signals. This lead pitch is too fine to use through hole vias. > [Original Message] > From: Sankar Karuppannan <Sankar.Karuppannan@xxxxxxxxxxxxxxxxxxxxxxx> > To: <si-list@xxxxxxxxxxxxx> > Cc: <si-list-bounce@xxxxxxxxxxxxx> > Date: 5/11/2006 11:36:16 AM > Subject: [SI-LIST] 0.4mm pitch PBGA routing > > Dear All, > Any one have idea about 0.4mm pitch PBGA routing guideline and where i can > do the PCB manufacturing. Please help me. > > Regards, > K.Sankar > Emuzed - A Flextronics Company, > Bangalore. > > > *********************** FSS-Unclassified *********************** > > ------------------------------------------------------------------ > 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 > ------------------------------------------------------------------ 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