Ed - I just completed a design for a 0.8mm pitch 176 ball Micro-star (tm) BGA and through-hole vias. The vias were 0.008" (0.010" drill) finished hole size in a 0.018" pad. I would not call these exactly normal but my fabricator says that they should be able to produce them (contact me of line for who)... This is a six layer mixed signal design, with a 12 amp power supply, talk about nightmares. Jeffrey A. McGlaughlin Sr. PCB Designer Battelle Memorial Institute Columbus Ohio [log in to unmask] -----Original Message----- From: Brunker Ed [SMTP:[log in to unmask]] Sent: Friday, 17 March, 2000 05:50 To: [log in to unmask] Subject: [TN] Micro BGAs Hi, Anyone using normal through vias for micro BGAs, 0.8mm pitch??? Regards Edward Brunker Principal Process Engineer ############################################################## TechNet Mail List 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 web site (http://www.ipc.org/html/forum.htm) for additional information. If you need assistance - 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 1.8c ############################################################## 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 web site (http://www.ipc.org/html/forum.htm) for additional information. If you need assistance - contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ##############################################################