a 109- Ball Chip Scale Package Ball Grid Array [CSP_BGA] (BC-109) Dimensions shown in millimeters A1 CORNER INDEX AREA 10.15 10.00 SQ 9.85 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H J K L M BALL A1 INDICATOR TOP VIEW 8.80 BSC SQ 0.80 BSC DETAIL A 1.40 MAX DETAIL A 0.85 MIN 0.25 MIN COMPLIANT TO JEDEC STANDARDS MO-205-AC SEATING PLANE 0.10 MAX COPLANARITY 012006-0 0.55 0.50 0.45 BALL DIAMETER