a A1 BALL CORNER 32-Lead Ceramic Ball Grid Array [CBGA] (BG-32-3) Dimensions shown in millimeters 7.05 6.85 SQ 6.70 7 6 5 4 3 2 *A1 CORNER INDEX AREA 1 A B 4.80 BSC SQ 0.80 BSC C D E F G TOP VIEW BOTTOM VIEW DETAIL A 3.80 MAX SEATING PLANE 0.60 0.55 0.50 BALL DIAMETER *BALL A1 IDENTIFIER IS GOLD PLATED AND CONNECTED TO THE D/A PAD INTERNALLY VIA HOLES. 3.20 MAX 2.50 MIN COPLANARITY 0.15 102609-B DETAIL A 0.60 MAX 0.25 MIN