I found the following: Jedec: Jedec 95-1, "Jedec Design Standard, Design Requirements for Outlines of Solid State and Related Products" JESD22 B-108, "Coplanarity Test for Surface-Mount Semiconductor Devices" IPC: IPC-7095, "Design and Assembly Process Implementation for BGAs" (ot sure if it has been finalized yet) Glenn Ken Patel <[log in to unmask]> Wrote: | | What is the acceptable industry spec or IPC for QFP and BGA coplanarity? | | re, | ken patel | | ______________________________________________________ | Ken Patel Phone: (408) 490-6804 | 1708 McCarthy Blvd. Fax: (408) 490-6859 | Milpitas, CA 95035 Beeper: (888) 769-1808 ############################################################## 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 Gayatri Sardeshpande at [log in to unmask] or 847-509-9700 ext.5365 ##############################################################