W24257A-35 View Datasheet(PDF) - Winbond
Part Name
Description
Manufacturer
W24257A-35 Datasheet PDF : 10 Pages
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W24257A
Package Dimensions, continued
28-pin Small Outline J Band
28
15
E HE
1
14
D
s
b
b1
e
Seating Plane
c
A2 A
L
£c
A1
e1
y
Dimension in Inches Dimension in mm
Symbol
Min. Nom. Max. Min. Nom. Max.
A
0.140
3.56
A1
0.027
0.69
A2
0.095 0.100 0.105 2.41 2.54 2.67
b1
0.026 0.028 0.032 0.66 0.71 0.81
b
0.016 0.018 0.022 0.41 0.46 0.56
c
0.008 0.010 0.014 0.20 0.25 0.36
D
0.710 0.730
18.03 18.54
E
0.295 0.300 0.305 7.49 7.62 7.75
e
0.044 0.050 0.056 1.12 1.27 1.42
e1
0.245 0.265 0.285 6.22 6.73 7.24
H E 0.327 0.337 0.347 8.31 8.56 8.81
L
0.077 0.087 0.097 1.96 2.21 2.46
S
0.045
1.14
y
0.004
0.10
θ
0
10
0
10
Notes:
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.
28-pin Standard Type One TSOP
HD
D
1
e
b
θ
L
L1
c
E
A2 A
A1
Y
Symbol
A
A1
A2
b
c
D
E
HD
e
L
L1
Y
θ
Dimension In Inches Dimension In mm
Min. Nom. Max. Min. Nom. Max.
0.047
1.20
0.002
0.006
0.035 0.040 0.041
0.007 0.008 0.011
0.004 0.006 0.008
0.461 0.465 0.469
0.311 0.315 0.319
0.05
0.95
0.17
0.10
11.70
7.90
0.15
1.00 1.05
0.20 0.27
0.15 0.21
11.80 11.90
8.00 8.10
0.520
0.020
0.000
0
0.528 0.536
0.022
0.024 0.028
0.010
0.004
3
5
13.20
0.50
0.00
0
13.40
0.55
0.60
0.25
3
13.60
0.70
0.10
5
Controlling dimension: Millimeters
Publication Release Date: January 1998
-9-
Revision A6
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