MIL-PRF-1/1096E
MIL-STD-
Limits
1311
Unit
Requirement or test
Notes
Conditions
Symbol
method
Min
Max
Conformance inspection,
part 3
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---
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Ef = 7.5; Ehk = 140 V ac;
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Heater-cycling life
1506
Eb = Ec1 = Ec2 = Ec3 = 0
Heater-cycling life-test
---
end point:
µA dc
Ihk
20
---
Heater-cathode leakage
1336
Ehk = 200 V dc; Rg1 = 1.0 MegΩ;
---
---
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Stability life
1516
---
TA = room
Stability life-test
---
end point:
ĆSm
10
---
Change in transcon-
1306
%
ductance (1) of
t
individual tubes
Ehk = 200 V dc; Rg1 = 1.0 MegΩ;
---
7, 11
---
Intermittent life
1501
---
---
TE = 220°C (min)
Intermittent life-test end
---
points (500 hours):
µA dc
-0.6
---
Total grid current
1266
Ic1
212
188
Heater current
1301
If
mA
ĆSm
20
---
Change in transcon-
1306
%
ductance (1) of
Ef
individual tubes
ĆSm
15
---
Transconductance (2)
1306
%
Ef
µA dc
10
---
Heater-cathode leakage
1336
Ihk
15
---
Transconductance (1),
1306
%
Avg
ĆSm
average change
t
Intermittent life-test end
---
points (1,000 hours):
µA dc
-1.0
---
Total grid current
1266
Ic1
212
188
Heater current
1301
mA
If
ĆSm
25
---
Change in transcon-
1306
%
ductance (1) of
t
individual tubes
µA dc
15
---
Heater-cathode leakage
1336
Ihk
See notes at top of next page.
4
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