MIL-PRF-1/1633B
Dimensions
Ltr
Inches
Millimeters
Min
Max
Min
Max
Conformance inspection, part 2
A
1.815
1.875
46.10
47.63
B
---
1.534
---
38.96
C
---
1.475
---
37.47
D
1.289
1.329
32.74
33.76
F
.970
1.010
24.64
25.65
G
.462
.477
11.73
12.12
J
.766
.826
19.46
20.98
N
1.025
1.035
26.04
26.29
R
.655
.665
16.64
16.89
T
.213
.223
5.41
5.66
U
.315
.325
8.00
8.26
Conformance inspection, part 3
(periodic check) (see note 2)
E
.125
.185
3.18
4.70
H
---
.040
---
1.02
K
.025
.046
0.64
1.17
L
1.234
1.264
31.34
32.11
M
1.180
1.195
29.97
30.35
P
.772
.792
19.61
20.12
Q
.650
.850
16.51
21.59
S
---
.545
---
13.84
V
---
0.086
---
2.18
W
---
.100 RAD
---
2.54 RAD
X
---
035 RAD
---
0.89 RAD
Y
.105
.145
2.67
3.68
Electrode contact areas (see note 12)
AA
.035
.361
0.89
9.17
AB
1.185
1.265
30.10
32.13
AC
1.534
1.728
38.96
43.89
AD
1.475
1.815
37.47
46.10
NOTES:
1. Insulation material between heater and heater-cathode shall be securely affixed.
2. These dimensions shall be tested on 10 tubes per month when in continuous production. Failure of more than
one tube to meet tolerances for any dimension shall cause that dimension to become, for all lots in process,
part of conformance inspection, part 2.
3. Silver plated 30 MSI minimum. Note 2 shall apply.
4. Plating not required over radiator and radiator support of copper, aluminum, or approved equivalent.
5. This surface shall be used for measurement of anode shank temperature.
6. Holes for tube extractor through top fin only.
7. Inner edge of heater and outer edge of cathode rf connection shall be free from burrs and sharp edges.
FIGURE 1. Outline drawing of electron tube type 7211 - Continued.
8
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