Ian: Regarding your JEDEC inquiry, JEDEC has issued several BGA-reated specs. These include: MO-149 Tape BGA / square MO-151 PBGA / square MO-156 Ceramic BGA / square MO-157 Ceramic BGA / rectangular MO-158 Ceramic column Grid Array / square MO-159 Ceramic Column Grid Array / rectangular MO-163 PBGA / rectangular Are there others, someone???? Also, JEDEC procedure SPP-010 specifies use of an alphanumeric system for ID of BGA balls/columns (very similar to Pin Grid IDs.) Hope this is of help to you. Best Regards, Doug Peck, AEIC DPECK [log in to unmask] *************************************************************************** * TechNet mail list is provided as a service by IPC using SmartList v3.05 * *************************************************************************** * To unsubscribe from this list at any time, send a message to: * * [log in to unmask] with <subject: unsubscribe> and no text. * *************************************************************************** * If you are having a problem with the IPC TechNet forum please contact * * Dmitriy Sklyar at 847-509-9700 ext. 311 or email at [log in to unmask] * ***************************************************************************