W24257A
PACKAGE DIMENSIONS
28-pin P-DIP Skinny
Symbol
Dimension in Inches
Dimension in mm
Min. Nom. Max.
0.175
0.010
0.125
0.016
0.058
0.008
0.130
0.018
0.060
0.010
1.388
0.300
0.283
0.090
0.120
0°
0.330
0.350
0.310
0.288
0.100
0.130
0.135
0.022
0.064
0.014
1.400
0.320
0.293
0.110
0.140
15°
0.370
0.055
Min. Nom. Max.
4.45
0.25
3.18
0.41
1.47
0.20
3.30
0.46
1.52
0.25
35.26
7.62
7.19
2.29
3.05
0°
8.38
8.89
7.87
7.32
2.54
3.30
3.43
0.56
1.63
0.36
35.56
8.13
7.44
2.79
3.56
15°
9.40
1.40
D
28
15
E
1
1
14
A
A
1
A
2
B
B
1
c
D
E
E
1
e
1
L
a
e
A
S
Notes:
S
A A
2
L
B
B
1
e
1
E
A
1
Base Plane
c
Mounting Plane
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 Small Outline J Band
Symbol
Dimension in Inches
Dimension in mm
Min. Nom. Max.
0.140
0.027
0.095
0.026
0.016
0.008
0.100
0.028
0.018
0.010
0.710
0.295
0.044
0.245
0.327
0.077
0.300
0.050
0.265
0.337
0.087
0.105
0.032
0.022
0.014
0.730
0.305
0.056
0.285
0.347
0.097
0.045
0.004
0
10
Min. Nom. Max.
3.56
0.69
2.41
0.66
0.41
0.20
2.54
0.71
0.46
0.25
18.03
7.49
1.12
6.22
8.31
1.96
7.62
1.27
6.73
8.56
2.21
2.67
0.81
0.56
0.36
18.54
7.75
1.42
7.24
8.81
2.46
1.14
0.10
0
10
28
15
E
H
E
1
14
D
c
A
L
£c
e
A
1
y
e
1
A
A
1
A
2
b
1
b
c
D
E
e
e
1
H
E
L
S
y
θ
Notes:
A
2
s
Seating Plane
b
b
1
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 are determined at the mold parting line.
4. Controlling dimension: Inches.
5. General appearance spec. should be based
on final visual inspection spec.
-9-
Publication Release Date: May 1997
Revision A14
WINBOND [ WINBOND ]
