MIL-E-1/190K
TABLE I. Testing and inspection.
Limits
MIL-STD-1311
Conditions
Symbol
Requirement or test
Units
Method
Min
Max
Conformance inspection,
part 1
Electrode current (1)
1256
See note 2 and 3
Ib
0.5
1.10
mA dc
(anode)
Electrode current (2)
1256
Ec = -2.8 V dc;
Ib
---
50
µA dc
(anode)
Rk = 0
(see note 2)
Total grid current
1266
Eb = 150 V dc;
Ic
0
-0.3
µA dc
Ec = 0;
Rk/k = 820 ohms;
Rg/g = 1.0 MegΩ
(see notes 2 and 3)
Heater current
1301
If
280
320
mA
Transconductance (1)
1306
See note 2
Sm
1,500
2,100
µmhos
Heater-cathode leakage
1336
See note 2
Ihk
---
5.0
µA dc
Short and discontinuity
1201
---
---
---
---
detection
Conformance inspection,
part 2
Insulation of electrodes
1211
See note 2
---
50
---
---
Low-frequency vibration
1031
Rp = 10,000 ohms;
Ep
---
25
mV ac
E = 40 Hz; 15 G
(see note 2)
Audio frequency noise
1246
Esig = 45 mV ac;
EB
---
17
vu
Rg = 0.5 MegΩ;
Rp = 0.2 MegΩ;
Rk = 750 ohms;
(see note 4)
Grid currents
1266
Ef = 7.5 V;
Ic
0
-0.5
µA dc
Ec = -4.0 V dc;
Eb = 150 V dc;
Rk = 0;
Rg/g = 1.0 MegΩ
(see notes 2 and 5)
ΔSm
Transconductance (2)
1306
Ef = 5.7 V
---
15
%
Ef
(see note 2)
Amplification factor
1316
See note 2
Mu
60
80
---
AC amplification
1321
Ebb = 100 V dc;
Ep
8.0
---
V ac
Ecc = 0;
Esig = 0.2 V ac;
Rk = 0
(see note 2)
2
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