4-Ball Wafer Level Chip Scale Package [WLCSP] (CB-4-5) Dimensions shown in millimeters Top View A1 BALL CORNER 1 Bottom View 2 2 1 A A 0.800 0.740 0.720 0.40 REF B B 0.800 0.740 0.720 0.40 REF 0.330 0.300 0.270 // 0.10 C 0.560 0.500 0.440 0.230 0.200 0.170 0.300 0.260 0.220 0.03 C 10-08-2010-A Seating Plane C