16-Ball Wafer Level Chip Scale Package [WLCSP] (CB-16-7) Dimensions shown in millimeters a 2.12 2.08 SQ 2.04 0.022 REF 0.660 0.602 0.544 SEATING PLANE 4 3 2 1 A BALL 1 IDENTIFIER TOP VIEW (BALL SIDE DOWN) 0.380 0.352 0.324 0.04 NOM COPLANARITY 0.280 0.250 0.220 B 1.50 REF C 0.50 REF D BOTTOM VIEW (BALL SIDE UP) 013009-B 0.330 0.310 0.290