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56-Ball Wafer Level Chip Scale Package [WLCSP]
(CB-56-1)
Dimensions shown in millimeters
a
0.645
0.600
0.555
3.330
3.290
3.250
BALL A1
IDENTIFIER
SEATING
PLANE
0.40
BALL PITCH
8
7
6
5
4
3
2
1
A
B
2.980
2.940
2.900
C
2.40 REF
D
0.287
0.267
0.247
E
F
G
0.04 NOM
COPLANARITY
0.230
0.200
0.170
BOTTOM VIEW
2.80 REF
(BALL SIDE UP)
021109-A
TOP VIEW
(BALL SIDE DOWN)
0.415
0.400
0.385