a 9-Ball Wafer Level Chip Scale Package [WLCSP] (CB-9-1) Dimensions shown in millimeters 0.65 0.59 0.53 BALL 1 IDENTIFIER SEATING PLANE 3 2 A 0.35 0.32 0.29 1.750 1.690 1.630 B C 0.50 BSC BALL PITCH TOP VIEW (BALL SIDE DOWN) 0.28 0.24 0.20 1 BOTTOM VIEW (BALL SIDE UP) 091306-B 1.575 1.515 1.455