MIL-PRF-1/1308E
TABLE I. Testing and inspection.
Inspection
Method
Conditions
Acceptance Symbol
Limits
Unit
MIL-STD-
level
1311
8/
Min
Max
Conformance inspection,
part 1
Heater current
1301
Ef = 6.3 V
0.65
If
770
880
mA dc
Electrode current (1)
1256
0.65
Ib
10
65
mA dc
Ec1 = -15 V dc 2/
(anode)
µA dc
Total grid current
1266
Eb = Ec2 = 150 V dc;
0.65
Ic1
---
-6.0
Ib = 2 x 40 mA dc;
t = 180 sec 3/
Peak emission
1231
eb = ec2 = 200 V;
0.65
is
800
---
mA
Ec1 = +60 V 4/
Short and discontinuity
1201
0.4
---
---
---
---
detection
Conformance inspection,
part 2
1316
---
Mu
5.6
9.3
---
Amplification factor
2/ 6/
(screen)
Cgp
Direct-interelectrode
1331
5/
---
0.1
pF
Cin
capacitance
5.6
6.8
pF
---
Cout
2.2
3.0
pF
Low-frequency vibration
1031
Eb = 250 V dc;
---
Ep
---
800
mV ac
Ec/Ib = 10 mA dc;
Rp = 2,000 ohms 2/
Power output
1236
Class C amplifier;
---
Po
10
---
W
F = 150 MHz;
Eb = 300 V dc;
Ic1 = 2 mA dc (max);
Ec2 = 175 V dc;
Ib = 75 mA dc (max);
Ic2 = 5 mA dc (max);
Rg2 = 100 ohms;
Ec1 = -40 V dc 7/
Base strain
1121
---
---
---
---
---
Glass strain
2126
2.5
---
---
---
---
Insulation of electrodes
1211
4.0
---
---
---
---
Permanence of marking
1105
---
---
---
---
---
See footnotes at end of table.
2
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