MIL-E-1/83H
TABLE I. Testing and inspection - Continued.
Limits
Method
Requirement or test
Units
Conditions
Symbol
MIL-STD-1311
Min
Max
Conformance inspection,
part 3
Heater-cycling life
1506
Ef = 7.5 V;
---
---
---
---
Ehk = -100 V dc;
Ec1 = Ec2 = Eb = 0
14/
Heater-cycling life-test
---
end poiint:
µA dc
Heater-cathode leakage
1336
Ehk = +25 V dc
Ihk
---
20
µA dc
Ehk = -100 V dc
Ihk
---
20
Stability life
1516
Epp = 460 V ac;
---
---
---
---
Rp/Ib = 80 mA dc (min);
Rg1 = 50,000 ohms;
Rp/ib = 500 ma (min);
Ta = room;
tk = 20 +0, -1
5/ 15/
Stability life-test
---
end points
(2 and 20 hours)
Critical grid voltage
3201
Ecc1
-2.8
-4.6
V dc
for conduction (1)
ĆEcc1
Change in grid
---
---
15
%
voltage (1) of
individual tubes
Intermittent life
1501
Epp = 460 V ac;
---
---
---
---
Rp/Ib = 80 mA dc (min);
Rg1 = 50,000 ohms;
Rp/ib = 500 mA (min);
tk = 20 +0, -1;
Ehk = -100 V dc;
TE = 150°C (min)
5/ 15/ 16/
Intermittent life-test
---
end points (500 hours)
Heater current
3241
If
550
660
mA
Critical grid voltage
3201
Ecc1
-2.0
-4.8
V dc
for conduction (1)
Critical anode voltage
3201
Ebb
---
50
V dc
for conduction (1)
Pulse emission
1231
etd
---
100
v
µA dc
Heater-cathode
1336
Ehk = +25 V dc
Ihk
---
20
µA dc
leakage
Ehk = -100 V dc
Ihk
---
20
MegΩ
Insulation of electrodes
1211
g2 = p
R
380
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See footnotes at end of table.
4
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