MIL-PRF-1/1660C
TABLE I. Testing and inspection.
Acceptance
Limits
Inspection
Method Notes
Conditions
Level 21/ Symbol
Min
Max
Unit
Conformance inspection,
part 1
0.65
etd
---
200
v
Pulsing emission
1231
6/
(eb = ec)/is = 10 a;
tp = 3 µs (max);
prr = 600 (max)
Insulation of electrodes
1211
---
Eb = Ek = 0;
0.65
R
50
---
Meg
Ec = -500 V dc
Heater current
1301
---
0.65
If
1.20
1.40
A
Electrode voltage (1)
7/
0.65
Ec
-4.0
-9.0
V dc
1261
(grid)
Total grid current
1266
7/
0.65
Ic
---
-8.0
µA dc
Conformance inspection,
part 2
---
Eco
---
-30
V dc
Electrode voltage (2)
1261
---
Ec/Ib = 1.0 mA dc;
(grid cutoff)
Eb = 1,000 V dc
---
Ib
---
1.0
mA dc
High voltage hold off
---
---
Eb = 2,500 V dc;
Ec = -130 V dc
Cin
1331
8/ 9/
Direct-interelectrode
No voltages applied
7.5
9.0
pF
Cgp
capacitance
2.95
3.25
pF
---
Cout
---
0.06
pF
---
---
---
---
---
Resonance
---
10/
No voltages applied;
TA = 25°C ± 5°C
1236
11/
Power oscillation (1)
F = 1.1 GHz
---
Po
2.0
---
W
(pulse)
± 50 MHz;
Ec = -80 V dc;
Ebb = 3.0 kV dc;
Ef = 6.3 V ac;
ec = 105 v
(grid pulse)
Conformance inspection,
part 3
Life test
---
16/
Group C;
---
---
---
---
---
heater standby;
t = 500 hours;
Ef = 6.3 V
Life-test (1) end points
---
16/
---
---
25
%
Ćib
---
---
---
---
---
Barometric pressure,
1002
13/
Pressure = 54 mmHg
reduced
(max);
voltage = 1,000
V ac; TA = 30°C
± 10°C
See footnotes at end of table.
2
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