IEC 60191-6-18:2010 provides standard outline drawings, dimensions, and recommended variations for all square ball grid array packages (BGA), whose terminal pitch is 1 mm or larger. This standard cancels and replaces IEC/PAS 60191-6-18 published in 2008. This first edition constitutes a technical revision. The contents of the corrigenda of May 2010 and July 2010 have been included in this copy.