a 9-Ball Wafer Level Chip Scale Package [WLCSP] (CB-9-3) Dimensions shown in millimeters 1.250 1.210 1.170 0.415 0.400 0.385 0.645 0.600 0.555 SEATING PLANE 3 2 1 A BALL A1 IDENTIFIER 0.287 0.267 0.247 1.260 1.220 1.180 B 0.40 BSC C 0.230 0.200 0.170 0.05 NOM COPLANARITY BOTTOM VIEW (BALL SIDE UP) 091709-A TOP VIEW (BALL SIDE DOWN)