K4H641638N Datasheet, PDF (8/10 Pages) Samsung semiconductor – DDR SDRAM Product Guide

General Information
60Ball FBGA (For 64Mb)
#A1
8.0 0 ± 0.10
TOP VIEW
60Ball FBGA (For 256Mb)
#A1
8.0 0 ± 0.10
TOP VIEW
DDR SDRAM
(Datum A)
(Datum B)
8.00 ± 0.10
0.80 x 8 = 6.40
0.80
1.60
987654321
A
B
C
D
E
F
G
H
J
K
L
M
Units : Millimeters
A
#A1 MARK
B
0.32 ± 0.05
1.10 ± 0.10
60 - ∅ 0.45 SOLDER BALL
(Post Reflow 0.50 ± 0.05)
∅0.20 M A B
BOTTOM VIEW
Units : Millimeters
8.00 ± 0.10
0.80 x 8 = 6.40
0.80
1.60
(Datum A)
987654321
A
(Datum B) ^B
C
D
E
F
G
H
J
K
L
M
A
#A1 MARK
B
0.35 ± 0.05
1.10 ± 0.10
60 - ∅ 0.45 SOLDER BALL
(Post Reflow 0.50 ± 0.05)
∅0.20 M A B
ENCAPSULANT AREA
BOTTOM VIEW
December 2007