Preliminary W24256
PACKAGE DIMENSIONS
28-pin P-DIP
Dimension in Inches
Dimension in mm
Symbol
Min. Nom. Max.
0.210
0.010
0.150
0.016
0.058
0.008
0.155
0.018
0.060
0.010
1.460
0.590
0.540
0.090
0.120
0
0.630
0.650
0.600
0.545
0.100
0.130
0.160
0.022
0.064
0.014
1.470
0.610
0.550
0.110
0.140
15
0.670
0.090
Min. Nom. Max.
5.33
0.25
3.81
0.41
1.47
0.20
3.94
0.46
1.52
0.25
37.08
14.99
13.72
2.29
3.05
0
16.00
16.51
15.24
13.84
2.54
3.30
4.06
0.56
1.63
0.36
37.34
15.49
13.97
2.79
3.56
15
17.02
2.29
D
28
15
A
A
1
A
2
B
B
1
c
D
E
E
1
e
1
L
a
E
1
e
A
S
Notes:
1
14
S
E
c
A A
2
A
1
Base Plane
Seating Plane
L
B
B
1
e
1
a
e
A
1. Dimensions D Max. & S include mold flash or
tie bar burrs.
2. Dimension E1 does not include interlead flash.
3. Dimensions D & E1 include mold mismatch and
are determined at the mold parting line.
4. Dimension B1 does not include dambar
protrusion/intrusion. .
5. Controlling dimension: Inches.
6. General appearance spec. should be based on
final visual inspection spec.
28-pin SOP Wide Body
Symbol
Dimension in Inches
0.112
0.004
0.093
0.014
0.008
0.098
0.016
0.010
0.713
0.326
0.044
0.453
0.028
0.059
0.331
0.050
0.465
0.036
0.067
0.103
0.020
0.014
0.733
0.336
0.056
0.477
0.044
0.075
0.047
0.004
0
10
Dimension in mm
2.85
0.10
2.36
0.36
0.20
2.49
0.41
0.25
18.11
8.28
1.12
11.51
0.71
1.50
8.41
1.27
11.81
0.91
1.70
2.62
0.51
0.36
18.62
8.53
1.42
12.12
1.12
1.91
1.19
0.10
0
10
Min. Nom. Max. Min. Nom. Max.
28
15
e
1
E H
E
θ
L
Detail F
1
b
14
A
A
1
A
2
b
c
D
E
e
H
E
L
L
E
S
y
θ
Notes:
D
e
1
c
A
2
A
S
e
y
A
1
L
E
Seating Plane
See Detail F
1. Dimensions D Max. & S include mold flash
or tie bar burrs.
2. Dimension b does not include dambar
protrusion/intrusion.
3. Dimensions D & E include mold mismatch
.
and determined at the mold parting line.
4. Controlling dimension: Inches.
5. General appearance spec should be based
on final visual inspection spec.
-8-
WINBOND [ WINBOND ]
