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October 2009
General Information DDR3 SDRAM
78Ball DDP for 2Gb B-die (x4/x8)
Bottom
Top
A
B
C
D
E
F
G
H
M
N
10.00 ± 0.10
0.80 x 12 = 9.60
0.80 x 8 = 6.40
3.200.80
4.80
78 - ∅0.45 Solder ball
0.2 ABM
(Datum B)
(Datum A)
876543219
1.60
#A1 INDEX MARK
B
A
11.50 ± 0.10
J
K
L
0.80
0.80
(Post Reflow ∅0.50 ± 0.05)
0.10MAX
1.40 ± 0.10
#A1
10.00 ± 0.10
11.50 ± 0.10
0.35 ± 0.05