MIL-PRF-1/1260K
Pin connections
1
Grid
2
Cathode
3
Heater
4
Heater
5
Cathode
6
Anode
7
Cathode
Dimensions
Ltr
Inches
Millimeters
Min
Max
Min
Max
Conformance inspection, part 2
A
.804
.844
20.42
21.44
C
---
2.125
---
53.98
E
---
1.875
---
47.63
Conformance inspection, part 3 (see note 4)
K
Base: E7-1
NOTES:
1. Anode terminal material shall be nickel.
2. Pins must be gold plated, if made of tungsten.
3. This dimension lies in a plane passing through the centerline of the tube and pin 6.
4. Dimensions shall be checked during the initial production and once each succeeding 12-calendar months in which there in
production. A 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, with an acceptance level of 6.5 (see 21/). The
regular "12-calendar months" sampling plan shall be reinstated after three consecutive samples have been accepted.
FIGURE 1. Outline drawing of electron tube type 7190.
5
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