MIL-E-1/175K
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
Ib
23
37
mA dc
(anode)
µA dc
Electrode current (2)
1256
Ec1 = -40 V dc;
Ib
---
100
(anode)
Rk = 0
Rgl = 1.0 MegΩ
µA dc
Total grid current (1)
1266
Icl
0
-1.0
(see note 2)
Heater current
1301
If
420
480
mA
µA dc
Heater-cathode leakage
1336
Ihk
---
15
Power output (1)
1341
Esig = 6.4 V ac;
Po
0.75
---
W
Rp = 3,000 ohms
Short and discontinuity
1201
---
---
---
---
Detection
Conformance inspection,
part 2
MegΩ
Insulation of electrodes
1211
R
50
---
Low-frequency vibration
1031
Rp = 2,000 ohms;
Ep
---
100
mV ac
15 G; F = 40 Hz
Audio frequency noise
1246
Ecal = 150 mV ac;
EB
---
17
vu
Ecc2 = 110 V dc;
Ecl = -8.7 V dc;
Rk = 0;
Rp = 2,000 ohms;
Rgl = 0.5 MegΩ;
Rg2 = 10,000 ohms;
Cg2 = 4.0 µF
Electrode current (screen)
1256
Ic2
0
4.0
mA dc
µA dc
Grid currents
1266
Ef = 7.5 V;
Is(gl)
0
-2.0
Ecl = -40 V dc;
Rgl = 1.0 MegΩ;
Rk = 0
(see note 3)
µmhos
Transconductance
1306
Sm
3,500
4,900
MegΩ
Anode resistance
1311
rp
0.01
---
Direct-interelectrode
1331
.405 in. dia shield
Cpq
---
0.20
pF
capacitance
Cin
5.5
7.5
pF
Cout
6.5
8.5
pF
ĆPo
Power output (2)
1341
Ef = 5.7 V;
---
15
%
Esig = 6.5 V ac;
Ef
Rp -3,000 ohms
Lead fatigue
1116
---
---
---
---
2
For Parts Inquires call Parts Hangar, Inc (727) 493-0744
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business