Samsung DDR3 User Manual page 15

General Information
78Ball DDP for 1Gb D-die (x4)
10.50 ± 0.10
0.80 x 8 = 6.40
(Datum A)
0.80 1.60
9 8 7 6 5 4 3 2 1
A
B
C
(Datum B)
D
E
F
G
H
J
K
L
M
N
82 - ∅0.45 Solder ball
(Post Reflow ∅0.50 ± 0.05)
0.2 M A B
Bottom
78Ball DDP for 1Gb E-die (x4/x8)
9.00 ± 0.10
0.80 x 8 = 6.40
(Datum A)
0.80 1.60
9 8 7 6 5 4 3 2 1
A
B
C
(Datum B)
D
E
F
G
H
J
K
L
M
N
78 - ∅0.45 Solder ball
(Post Reflow ∅0.50 ± 0.05)
0.2 M A B
Bottom
A
#A1 INDEX MARK
4.00
B
A
#A1 INDEX MARK
3.20
B
10.50 ± 0.10
#A1
Top
9.00 ± 0.10
#A1
Top
DDR3 SDRAM
0.35 ± 0.05
1.40 ± 0.10
0.35 ± 0.05
1.40 ± 0.10
October 2009