Is that placement side only or through the board? What about micro BGAs? Just started placing a new design with a 176 ball .8mm pitch BGA and was about to ask the same question? TIA Jeffrey A. McGlaughlin Sr. PCB Designer Battelle Memorial Institute Columbus Ohio [log in to unmask] -----Original Message----- From: Kuczynski Michael [SMTP:[log in to unmask]] Sent: Wednesday, 08 March, 2000 13:54 To: [log in to unmask] Subject: Re: [TN] Clearance around BGA I've been using .200 in. as a minimum around all BGA's. Until mfg. lets me know otherwise. It also gives enough room for inspection. Michael Kuczynski Librarian/Sr. Designer L3 Communications 201-393-2122 (Phone) Space & Navigation 201-393-6681 (Fax) 699 Rt46E PL1/H13 Mail Stop PL1/J8 Teterboro NJ 07608 [log in to unmask] [log in to unmask] ############################################################## 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 ##############################################################