316-Ball Chip Scale Package Ball Grid Array [CSP_BGA] (BC-316) Dimensions shown in millimeters A1 CORNER INDEX AREA 17.10 17.00 SQ 16.90 BALL A1 INDICATOR 20 18 16 14 12 10 8 6 4 2 19 17 15 13 11 9 7 5 3 1 A B C D E F G H J K L M N P R T U V W Y 15.20 BSC SQ TOP VIEW 0.80 BSC BOTTOM VIEW DETAIL A 1.70 MAX DETAIL A 0.65 MIN 0.25 MIN SEATING PLANE *0.50 COPLANARITY 0.45 0.12 0.40 BALL DIAMETER *COMPLIANT TO JEDEC STANDARDS MO-205-AM WITH EXCEPTION TO BALL DIAMETER. 012006-0 a