Rainbow Electronics W27E512 - Manual (Page 14)

W27E512
- 14 -
PACKAGE DIMENSIONS
28-pin P-DIP
Seating Plane
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.
6. General appearance spec. should be based on
final visual inspection spec.
1.63 1.47 0.064 0.058
Notes:
Symbol
Min. Nom. Max. Max. Nom. Min.
Dimension in Inches Dimension in mm
A
B
c
D
e
A
L
S
A
A 1
2
E
0.060 1.52
0.210 5.33
0.010
0.150
0.016
0.155
0.018
0.160
0.022
3.81
0.41
0.25
3.94
0.46
4.06
0.56
0.008
0.120
0.670
0.010
0.130
0.014
0.140
0.20
3.05
0.25
3.30
0.36
3.56
0.540 0.550 0.545 13.72 13.97 13.84
17.02
15.24 14.99 15.49 0.600 0.590 0.610
2.29 2.54 2.79 0.090 0.100 0.110
B 1
1
e
E
1
a
1.460 1.470 37.08 37.34
0 15
0.090 2.29
0.650 0.630 16.00 16.51
4. Dimension B1 does not include dambar
protrusion/intrusion.
5. Controlling dimension: Inches.
15 0
e A
2 A
a
c
E
Base Plane 1 A
1 e
L
A
S
1 E
D
1 B
B
28
1
15
14
28-pin SO Wide Body
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
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
A
b
c
D
e
H E
L
y
A
A
L
E
1
2
E
S
θ
θ