Hi, Our product begin to use CCGA, Although We have experience on the design and process about TBGA,CBGA. But we are not sure about the pad design for CCGA(1.27mm Pitch,0.58mm Column Diameter). Thanks for all your help. Best regards. Liu changkang ############################################################## 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 ##############################################################