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|  MIL-E-1/190J
TABLE I. Testing and inspection - Continued.
MIL-STD-1311
Requirement or test
Conditions
Symbol
Limits
Units
Test method
Min
Max
Conformance inspection, part 2 -
Continued
1331
Direct-interelectrode capacitance
No shield (see note 2)
Cgp
0.8
1.20
pF
No shield (see note 2)
Cin
1.30
2.10
pF
No shield; section 1
Cout
0.16
0.30
pF
No shield; section 2
Cout
0.21
0.35
pF
No shield;
Cgg
---
0.014
pF
No shield
Cpp
---
0.80
pF
1116
Lead fatigue
---
---
---
---
2126
Envelope strain
---
---
---
---
1041
Shock
450 G;
---
---
---
---
EhK = +100 V dc;
Rg = 0.1 Meg
(see note 6)
1031
Vibration fatigue
2.5 G; fixed frequency;
---
---
---
---
F = 25 min, 60 max
---
Post-shock and vibration-fatigue test
end points:
1031
Low-frequency vibration
Ep
---
100
mV ac
A dc
1336
Heater-cathode
Ihk
---
20
leakage
ĆSm
1306
Change in transcon-
---
20
%
ductance (1) of individual tubes
t
1105
Permanence of marking
Conformance inspection, part 3
1506
Heater-cycling life
Ef = 7.0 V; 1 min
---
---
---
---
"on", 4 min "off";
Ehk = 140 V ac; Ec =
Eb = 0
1516
Stability life
Eb = 150 V dc; Ehk =
---
---
---
---
+200 V dc; Rg/g = 1.0
Meg; Rk/k = 820 ohms;
TA = room (see note 2)
---
Stability life-test end point:
ĆSm
1306
Change in
---
10
%
transconductance (1)
t
of individual tubes
1501
Intermittent life
Stability life test,
---
---
---
---
(room temperature)
or equivlent conditions;
TA = room
---
Intermittent life-test
end point (room
temperature) (500
hours):
1211
Insulation of electrodes
R
50
---
Meg
3
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