Rainbow Electronics W24L257 - Manual (Page 9)

Preliminary W24L257
Publication Release Date: May 2000
- 9 - Revision A1
PACKAGE DIMENSIONS
28-pin SOP Wide Body
2
1 A
28 15
14 1
e S
E H
b
Seating Plane
A A
y L
L
e
c
See Detail F
D
E
E
1
1 e
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. .
0.25 0.20 0.010 0.008
Notes:
Symbol
Min. Nom. Max. Max. Nom. Min.
Dimension in Inches Dimension in mm
0.014 0.36
0.112 2.85
0.004
0.093
0.014
0.098
0.016
0.103
0.020
2.36
0.36
0.10
2.49
0.41
2.62
0.51
0.059
0.004
0 10
0.713
0.067
0.733
0.075 1.50
18.11
1.70
18.62
1.91
0.477 0.465 0.453 12.12 11.81 11.51
0 10
0.10
8.53 8.41 8.28 0.336 0.331 0.326
0.71 0.91 1.12 0.028 0.036 0.044
4. Controlling dimension: Inches.
5. General appearance spec should be based
on final visual inspection spec.
1.12 1.27 1.42 0.044 0.050 0.056
1.19 0.047
A
b
c
D
e
H E
L
y
A
A
L E
1
2
E
S
θ
θ
28-pin Standard Type One TSOP
A
A
A
2
1 L
L
1
Y
c
E
H
D
D
b
e
Controlling dimension: Millimeters
Min.
Dimension In Inches
Nom. Max. Min. Nom. Max.
Symbol
1.20
0.05 0.15
1.05 1.00 0.95
0.17
0.10
11.70
7.90
13.20
0.50
0.00
0
0.20 0.27
0.15 0.21
11.80 11.90
8.00 8.10
13.40 13.60
0.55
0.60 0.70
0.25
0.10
3 5
0.047
0.006
0.041 0.040 0.035
0.007 0.008 0.011
0.004 0.006 0.008
0.461 0.465 0.469
0.311 0.315 0.319
0.520 0.528 0.536
0.022
0.020 0.024 0.028
0.010
0.000 0.004
0 3 5
0.002 A
A
b
c
D
E
e
L
L
Y
1
1
2
A
H D
θ
Dimension In mm
θ
1