MIL-PRF-1/825E
TABLE I. Testing and inspection - Continued.
Allowable defectives
per characteristic
Symbol Limits
MIL-STD-
Unit
Requirement or test
Notes
Conditions
Acceptance
Level 8/
1311
First
Combined
Min Max
method
sample
samples
Conformance
inspection, part 3
---
Stability life
1516
---
---
---
---
---
---
---
Ebb/Ib = 2.5mA dc;
TA = room
Stability life-test
---
-
end point:
ĆEtd
2.5
Change in voltage
---
200 mVdc
---
---
---
---
drop (3) of individual
t
tubes
---
Survival-rate life
1521
---
---
---
---
---
---
---
Stability
life-test
conditions
Survival-rate-life
---
test end points
(100 hours):
---
---
Inoperatives
---
---
---
---
---
---
---
ĆEtd
---
2.5
---
Change in voltage
500 mVdc
---
---
---
drop (3) of individual
t
tubes
---
---
---
Intermittent life
1501
---
---
---
7
---
Stability
life-test
conditions,
or equivalent;
TA=150°C
(min)
Intermittent life-test
---
end points (500 hrs)
---
--- ---
3
---
Inoperatives
---
---
1
---
Vdc
--- ±3.0
3
---
Regulation
3335
Reg
1
---
Vdc
82 90
3
---
3337
Voltage drop (1)
Etd
1
Vdc
82 87.5
3
---
3337
Voltage drop (2)
Etd
1
Vdc
82 88.5
3
---
3337
Voltage drop (3)
Etd
1
Vdc
--- 115
3
---
Ionization voltage (1)
3347
Ez
1
ĆEtd
Vdc
--- 1.5
3
---
Change in voltage
---
1
---
drop (3) of individual
t
tubes
---
---
6
Total defectives
---
---
---
---
3
---
Intermittent life-test
---
end points (1,000hrs)
---
--- ---
5
---
Inoperatives
---
---
2
---
Vdc
--- ±3.2
5
---
Regulation
3335
Reg
2
---
Vdc
82 91
5
---
Voltage drop (1)
3337
Etd
2
---
Vdc
5
82 88
---
Voltage drop (2)
3337
Etd
2
---
Vdc
5
82 90
---
Voltage drop (3)
3337
Etd
2
---
Vdc
5
--- 115
---
Ionization voltage (1)
3347
Ez
2
---
---
10
--- ---
---
Total defectives
---
---
5
---
See notes at top of next page.
3
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