MIL-PRF-1/852E
TABLE I. Testing and conditions - Continued.
Limits
MIL-STD-
Symbol
1311
Requirement or test
Notes
Conditions
Acceptance
Unit
Min
Max
Level 8/
method
Conformance inspection,
part 2 - Continued
Shock
1041
---
6
450G;
6.5
---
---
---
Ehk = +135 V dc
1031
Vibration fatigue
---
6.5
---
---
---
---
Shock and vibration
fatigue test end points:
1031
Low-frequency vibration
mA dc
---
Ep
---
500
1336
Heater-cathode leakage
µA dc
---
Ihk
---
100
ĆPo
1236
Power oscillation
%
---
---
20
(change in individual
t
tubes)
1111
Base pin solder depth
---
---
---
---
---
1101
Secureness of base, cap,
---
---
---
---
---
or insert
---
Base material insulating
1216
---
---
---
---
quality
---
1105
Permanence of marking
---
---
---
---
MIL-STD-
Limits
Requirement or test
Notes
Conditions
Symbol
1311
Unit
Min
Max
method
Conformance inspection,
part 3
Heater-cycling life
1506
Ef = 7.5 V; Ehk = +135 V dc
---
---
---
---
Ec1 = Ec2 = Eb = 0;
1 min on, 4 min off
Stability life
1516
Ehk = 135 V dc;
---
---
---
---
Rg1 = 0.01 Meg Ω;
TA = room
Stability life-test end point (1 hour):
---
ĆPo
Power oscillation (change in
1236
---
20
%
individual tubes)
t
---
Intermittent Life
1501
3, 7
Ehk = 135 V dc;
---
---
---
Rg1 = 0.01 Meg Ω;
TA = room
TE = 160°C (min)
See notes at end of table I.
3
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