MIL-PRF-1/1221D
TABLE I. Testing and inspection - Continued.
Inspection
Method
Conditions
Acceptance Symbol
Limits
Unit
MIL-STD-
level
11/
Min
Max
1311
Conformance inspection,
part 2 - Continued
%
15
---
---
Power oscillation (1), except
1236
Power oscillation (2)
ĆPo
Ef = 5.3 V ac
Ef
Shock
1041
450 G; Ef = 6.3 V ac;
15
---
---
---
---
no other voltages
Vibration fatigue
1031
Ef = 6.3 V ac; F = 50 Hz; no
6.5
---
---
---
---
other voltages
MegΩ
---
10
R
---
---
Insulation of electrodes 6/ 7/
Post-shock and vibration-
70
---
Ihk
---
fatigue test end points
Heater-cathode leakage
µA dc
---
4.0
Po
---
Power oscillation (1)
W
(useful)
Pulse cathode current
---
ik
600
---
ma
Permanence of marking
1105
---
---
---
---
---
Conformance inspection,
part 3
---
Group C; power oscillation (1);
---
---
---
---
Life test (1)
---
Ef = 7.8 V ac; Eb = 200 V dc
10/
W
---
3.5
Po
---
Life-test end points (1)
---
Power oscillation (1)
(useful)
(100 hours)
15
---
---
Power oscillation (2)
%
ĆPo
Ef
---
450
---
Pulse cathode current
ma
ik
-1
---
---
Total grid current
Ic1
µA dc
-50
---
---
Primary grid emission (control)
Isg1
µA dc
-200
---
---
Primary grid emission (screen)
Isg2
µA dc
Life test (2)
---
Group C; power oscillation (1)
---
---
---
---
---
W
---
3.5
Po
---
---
Power oscillation (1)
Life-test end points (2)
(useful)
(1,000 hours)
15
---
---
Power oscillation (2)
%
ĆPo
Ef
---
450
---
Pulse cathode current
ma
ik
-1
---
---
Total grid current
Ic1
µA dc
-50
---
---
Primary grid emission (control)
Isg1
µA dc
-200
---
---
Primary grid emission (screen)
Isg2
µA dc
See footnotes at top of next page.
3
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