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304-Lead Plastic Ball Grid Array [PBGA]
(B-304)
Dimensions shown in millimeters
a
A1 CORNER
INDEX AREA
31.00 BSC SQ
23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
A
B
C
D
E
F
G
H
J
K
L
M
N
P
R
T
U
V
W
Y
AA
AB
AC
BALL A1
INDICATOR
26.70
26.35 SQ
26.00
TOP VIEW
28.04
27.94 SQ
27.84
BOTTOM VIEW
1.27
BSC
2.54
2.33
2.12
DETAIL A
DETAIL A
1.22
1.17
1.12
0.62
0.56
0.50
0.70
0.60
0.50
SEATING
PLANE
COMPLIANT TO JEDEC STANDARDS MS-034-BAN-2
0.90
0.75
0.60
BALL DIAMETER
COPLANARITY
0.20 MAX