Referencing Ray Prassad's text on SMT, pp 134-135 ".....Co-planarity allowed by JEDEC standard (MO 151) is 0.006 inch for smaller BGA's (1 mm pitch) and 0.008 inches for larger BGA's (1.27 mm and 1.5 mm)...." -----Original Message----- From: Alex L Chan [mailto:[log in to unmask]] Sent: Monday, August 14, 2000 2:41 PM To: [log in to unmask] Subject: [TN] Looking for standard on component bowing? Hi Technetters, Is there anyone know there is any standard for component bowing? For example, for PWB there is standard for how much bow per inch. Is there any standard for the same purpose but is for component after reflow, such as connectors, BGA, etc. Thanks in advance, Alex ############################################################## 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 ##############################################################