a 289-Ball Chip Scale Package Ball Grid Array [CSP_BGA] (BC-289-2) Dimensions shown in millimeters 12.00 BSC SQ A1 BALL CORNER 22 20 18 16 14 12 10 8 6 4 2 23 21 19 17 15 13 11 9 7 5 3 1 A C E G 11.00 BSC SQ J L N R 0.50 BSC U W B D F H K M P T V Y AA AB AC TOP VIEW DETAIL A DETAIL A 0.20 MIN SEATING PLANE 0.35 COPLANARITY 0.08 0.30 0.25 BALL DIAMETER *COMPLIANT TO JEDEC STANDARDS MO-195-AJ WITH THE EXCEPTION TO PACKAGE AND BALL HEIGHT. 111708-A 1.40 1.26 1.11 BOTTOM VIEW