Hi Dennis, One approach that is being employed to some extent is filling the vias with a conductive polymer, i.e., DuPont CB-100 Silver Via Fill. Feel free to contact me off-line for more info. Andy Slade New Product Development Eng. HADCO Tech Center East ph: 978-556-6310 [log in to unmask] ______________________________ Reply Separator _________________________________ Subject: [TN] BGA dogbone...Can we get rid of it? Author: [log in to unmask] at SMTPLink-Hadco Date: 08/13/98 4:49 PM (Embedded image moved to file: PIC27414.PCX) From: Dennis J Fall@TFT on 08/13/98 04:49 PM To: [log in to unmask] cc: Subject: BGA dogbone...Can we get rid of it? Is there a good way to plug vias so we can get rid of the dog bone pad? Dennis Fall P: 507-625-8445 x17 Engineer F: 507-625-3523 Thin Film Technology Corporation mailto:[log in to unmask] 1980 Commerce Drive http://www.thin-film.com North Mankato, MN 56003-1702 ################################################################ TechNet E-Mail Forum provided as a free service by IPC using LISTSERV 1.8c ################################################################ To subscribe/unsubscribe, send a message to [log in to unmask] with following text in the body: To subscribe: SUBSCRIBE TechNet <your full name> To unsubscribe: SIGNOFF TechNet ################################################################ Please visit IPC's web site (http://www.ipc.org) "On-Line Services" section for additional information. For technical support contact Hugo Scaramuzza at [log in to unmask] or 847-509-9700 ext.312 ################################################################