MIL-PRF-1/757K
TABLE I. Testing and inspection.. Continued
Method
Requirement or
Conditions
Acceptance level Symbol
Limits
Unit
8/
MIL-STD-1311
test
Min
Lal
Bogey Ual Max Ald
Conformance
inspection, part 2
continued
Post-shock end
---
points:
Heater-cathode
1336
Ehk=+25 Vdc
---
Ihk
---
---
---
---
20
---
ľAdc
leakage
Ehk=-100 Vdc
Ihk
---
---
---
---
20
---
ľAdc
Vdc
Anode voltage
1261
---
Ebb
---
---
---
---
26
---
Acceptance
Method
Limits
Requirement or
Conditions
Symbol
Unit
level 8/
MIL-STD-1311
test
Min
Max
Conformance
inspection, part 3
---
1506
Heater-cycling
Cycles
Ef=7.0 V;
2.5
---
2,500
life test
1 minute "on"
4 minutes "off";
Eb=Ec1=Ec2=0
Ehk=18 Vac
---
1521
Survival-rate
---
Ib=16 mAdc;
---
---
---
life test
ib=100 ma;
Rg1=50,000
ohms(min);
Epp=350 Vac;
Ehk=-100 Vdc;
+25Vdc;
Rp=5,000 ohms
(approximately)
TA=room
See notes 4 & 5
---
Survival-rate life
test end point:
---
---
1201
Short and dis-
---
0.65
---
continuity
detection
(inoperatives)
1501
Intermittent life-
test operation
---
---
1521
Survival-rate
---
tk=10 (max);
---
---
life test
TA=100°C (min)
See notes 4 & 5
3
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