MIL-PRF-1/1335H
TABLE I. Testing and inspection.
Inspection
Method Notes
Conditions
Acceptance
Symbol
Limits
Unit
MIL-STD-
Level
12/
Min
Max
1311
Qualification inspection
4/
1002
Barometric pressure,
---
---
---
---
---
Pressure = 8 ± 1
reduced
mmHg;
voltage = 300 V ac
---
Ep
---
15
mV ac
9/
Ebb = 150 V dc;
Sweep-frequency vibration
1031
Rp = 10,000 ohms;
Rk = 82 ohms;
Ec = 0; 10 G;
F = 100 to 2,000 Hz
1031
10/
Sweep-frequency vibration
Eb = Ec = 0;
---
---
---
---
---
fatigue
Ef = 6.3 V
Sweep-frequency vibration
---
fatigue test end points:
mV ac
15
Low-frequency vibration
---
1031
---
Ep
---
20
Heater-cathode leakage
---
1336
---
Ihk
---
µAdc
---
6,800
Transconductance (1)
1306
Sm
---
---
µmhos
258
222
Heater current
1301
If
---
---
mA
Conformance inspection,
part 1
258
mA
222
If
0.65
---
1301
Heater current
Heater-cathode leakage
1336
---
0.65
Ihk
---
20
µA dc
Transconductance (1)
1306
7/
0.65
Sm
8,000
13,000 µmhos
0.65
Ib
4.5
11.0
mA dc
1256
---
Ec = 0;
Electrode current
Rk = 82 ohms
(anode)
Short and discontinuity
1201
---
0.65
---
---
---
---
detection
Conformance inspection,
part 2
MegΩ
Insulation of electrodes
1211
---
---
R
100
---
Electrode voltage (grid)
1261
---
Rk = 0;
---
Ec
---
-4.5
V dc
Ec/Ib = 0.1 mA dc
1316
7/
Amplification factor
---
Mu
65
115
---
---
15
%
---
7/
Ef = 6.0 V
Transconductance (2)
1306
ĆSm
Ef
See footnotes at end of table.
2
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