88-Ball Chip Scale Package Ball Grid Array [CSP_BGA] (BC-88-1) Dimensions shown in millimeters a A1 BALL CORNER (1.50 × 1.50) 6.10 6.00 SQ 5.90 10 9 8 7 6 5 4 3 2 A1 BALL CORNER 1 A B C 4.50 BSC SQ D E 0.50 BSC F G H J K 0.75 REF TOP VIEW DETAIL A 0.45 DETAIL A 0.76 0.66 0.56 0.21 NOM 0.16 MIN 0.21 SEATING PLANE 0.35 COPLANARITY 0.08 0.30 0.25 BALL DIAMETER COMPLIANT TO JEDEC STANDARDS MO-225. 070308-A 1.00 0.87 0.72 BOTTOM VIEW