MIL-PRF-1/1385K
Dimensions
Ltr
Inches
Millimeters
Tube
Min
Max
Min
Max
type
Conformance inspection, part 2
A
2.324
2.464
59.03
62.59
Both
C
1.810
1.910
45.97
48.51
Both
Conformance inspection, part 3 (see note 6)
B
1.610
1.640
40.89
41.66
7580W
B1
2.050
2.080
52.07
52.83
8930
D
.750
.810
19.05
20.57
Both
E
.710
.790
18.03
20.07
Both
F
---
1.406
---
35.71
Both
G
.187
---
4.75
---
Both
H
Base: B8: 236 (EIA) (see note 1)
Both
J
.559
.573
14.20
14.55
Both
K
.240
---
6.10
---
Both
NOTES:
1. Pin alignment shall be checked by means of JEDEC gauge GB8-3. Dimensions of control-grid contact shall be inspected
by means of gauge specified on Drawing 246-JAN and shall be conformance inspection, part 2.
2. Alignment of anode, screen-grid, and control-grid contact surfaces shall be determined by means of gauge specified on
Drawing 168-JAN. Conformance inspection, part 2, shall apply. (Applies to tube type 7580W).
3. Air system socket shall be as specified on Drawing 246-JAN.
4. Location of guide lug of control-grid contact shall be referenced by a notch or arrow on the anode radiator in position
shown.
5. Anode clamping shall be confined to anode radiator.
6. Dimensions shall be checked yearly. An accept on zero defect sampling plan shall be used, with sample of three tubes
with an acceptance number of zero. In the event of failure, the test will be made as a part of conformance inspection,
part 2, acceptance level 6.5 of MIL-PRF-1 Table III. The yearly sampling plan may be reinstated after three consecutive
samples have been accepted.
FIGURE 1. Outline drawing of electron tube types 7580W and 8930.
7
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