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256-Ball Ball Grid Array, Thermally Enhanced [BGA_ED]
(BP-256)
Dimensions shown in millimeters
a
A1 CORNER
INDEX AREA
27.00
BSC SQ
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
24.13
BSC SQ
3
2
1
A
B
C
D
E
F
G
H
J
K
L
M
N
P
R
T
U
V
W
Y
BALL A1
INDICATOR
TOP VIEW
4
BOTTOM
VIEW
1.27
BSC
DETAIL A
1.00
0.80
0.60
DETAIL A
1.70 MAX
0.70
0.60
0.50
0.10 MIN
COPLANARITY
0.20
SEATING
PLANE
COMPLIANT TO JEDEC STANDARDS MO-192-BAL-2
041906-A
0.25 MIN
(4 )
0.90
0.75
0.60
BALL DIAMETER