MIL-E-1/188J
TABLE I. Testing and inspection.
Limits
MIL-STD-1311
Units
Conditions
Symbol
Requirement or test
Notes
Method
Min
Max
Conformance inspection,
part 1
Electrode current (1)
1256
Ib
4.5
8.5
mA dc
(anode)
µA dc
Electrode current (2)
1256
2/
Ec = -6.5 V dc;
Ib
---
100
(anode)
Rk = 0
µA dc
Electrode current (3)
1256
1/ 2/
Ec = -5.5 V dc;
Ib
---
50
(anode) type 6021WSPL
Rk = 0
µA dc
Total grid current
1266
2/ 3/
Eb = 150 V dc;
Ic
0
-0.3
Rk = 300 ohms;
Rg = 2.0 MegΩ
Heater current
1301
If
280
320
mA
µmhos
Transconductance (1)
1306
2/
Sm
4,450
6,350
µA dc
Heater-cathode leakage
1336
2/
Ihk
---
5.0
Short and discontinuity
1201
---
---
---
---
detection
Conformance inspection,
part 2
Insulation of electrodes
1211
2/
---
---
---
---
High-frequency vibration
1031
2/
Rp = 10,000 ohms;
Ep
---
50
mV ac
Audio frequency noise
1246
4/ 5/
Esig = 65 mV ac;
---
---
---
---
Rg = 0.1 MegΩ;
Rp = 0.01 MegΩ;
Rk = 75 ohms
Electrode current (1)
1256
Ib
---
1.6
mA dc
(anode)
(difference between
sections)
µA dc
Grid emission
1266
2/ 6/
Ef = 7.5 V;
Ic
0
-0.5
Ec = -7.5 V dc;
Eb = 150 V dc;
Rk = 0;
Rg = 1.0 MegΩ
ĆSm
Transconductance (2)
1306
2/
Ef = 5.7 V
---
15
%
Ef
Amplification factor
1316
2/
Mu
30
40
---
Direct-interelectrode
1331
2/
No shield
Cgp
1.2
1.8
pF
capacitance
No shield
Cin
1.8
3.0
pF
No shield; section 1
Cout
0.20
0.36
pF
No shield; section 2
Cout
0.22
0.42
pF
No shield
Cgg
---
0.013
pF
No shield
Cpp
---
0.52
pF
See footnotes at end of table.
2
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