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 = 9.6
0
0.80 x 8 = 6.40
3.20
0.80
4.8
0
78 -
∅
0.45 Solder ball
0.2
A B
M
(Datum B)
(Datum A)
8 7 6 5 4 3 2 1
9
1.60
#A1 INDEX MARK
B
A
11
.50
±
0.
10
J
K
L
0.
80
0.
80
(Post Reflow
∅
0.50
±
0.05)
0.1
0
MAX
1.40
±
0.10
#A1
10.00
±
0.10
11
.50
±
0.1
0
0.35
±
0.05
