16-Ball Wafer Level Chip Scale Package [WLCSP] (CB-16-2) Dimensions shown in millimeters a 0.659 0.606 0.553 2.185 BSC SQ SEATING PLANE 4 3 2 1 A BALL 1 IDENTIFIER 0.363 0.313 0.263 B 0.50 REF C D 0.369 0.356 0.343 0.03 MAX COPLANARITY 0.290 0.250 0.210 0.3425 REF BOTTOM VIEW (BALL SIDE UP) 022908-A TOP VIEW (BALL SIDE DOWN)