MIL-PRF-1/263G
TABLE I. Testing and Inspection.
MIL-STD-
Limits
Acceptance
1311
Requirement or test
Conditions
level (see
Unit
Symbol
Min
Max
method
note 11)
Qualification inspection
Variable-frequency
No voltages applied
1031
---
---
---
---
---
vibration
Conformance inspection,
part 1
Short and discontinuity
1201
0.4
---
---
---
---
detection
1231
Emission (1)
Eb = 50 V dc
0.4
Is
100
---
mA dc
(see note 3)
1301
Heater current
0.4
If
550
650
mA
Operation of rectifiers
1353
See notes 4 and 5
0.4
Io
51
---
mA dc
μA dc
Heater-cathode leakage
1336
Ehk = - 450 V dc
0.4
Ihk
---
75
Conformance inspection,
part 2
MegΏ
Insulation of electrodes
1211
See note 3
2.5
R
10
---
Barometric pressure,
1002
Pressure = 140 ±5 mmHg;
6.5
---
---
---
---
reduced
voltage = 980 V ac
High-frequency vibration
1031
No voltages applied
6.5
---
---
---
---
mA dc
Emission (2)
1231
Ef = 5.5 V;
2.5
Is
90
---
Eb = 50 V dc
(see note 3)
---
Shock
1041
450 G; Epp/a = 0
6.5
---
---
---
---
Vibration-fatigue
1031
6.5
---
---
---
Post-shock and vibration-
---
fatigue test end points:
μA dc
Heater-cathode leakage
1336
---
Ihk
---
150
mA dc
Operation of rectifiers
1353
---
Io
48
---
---
Base strain
1121
See note 7
---
---
---
---
---
Envelope strain
2126
2.5
---
---
---
---
Permanence of marking
1105
---
---
---
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See notes at end of table.
2
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