MIL-PRF-1/876G
TABLE I. Testing and inspection.
Inspection
Method
Notes
Conditions
Symbol
Limits
Unit
Min
Max
Conformance inspection,
part 1
3/
If
3.2
3.8
A ac
Filament current
1301
Peak emission
1231
---
eb = ec1 = ec2
is
2.0
---
a
= 2,500 v
Electrode current
1256
---
Ic2
-1.0
+1.0
mA dc
(screen)
Electrode voltage (grid)
1261
---
Ec1
-38.0
-58.0
V dc
µA dc
Total grid current
1266
1/
Ic1
---
-5
µA dc
1266
---
Ef = 6.6 V ac;
Isg1
---
-250
Primary grid emission
Pg1 = 6 W or
(control)
Ic1 = 28 mA dc; t = 15;
anode and screen-
grid floating
µA dc
1266
---
Ef = 6.6 Vac;
Isg2
---
-250
Primary grid emission
Pg2 = 12 W or
(screen)
Ic2 = 27 mA dc;
Ec1 = 0; t = 15;
anode floating
Conformance inspection,
part 2
Low-frequency vibration
1031
---
No voltages
---
---
---
---
Angle = 20°
Bump
1036
---
---
---
---
---
Angle = 15°
Bump and short
1036
---
---
---
---
---
Mu
5.0
7.0
---
Amplification factor
1316
---
g1 to g2;
Ec2 = 250 V dc;
Ic2 = 40 mA dc;
Eb = 0
Cgp
pF
0.12
Direct-interelectrode
1331
---
---
Cin
pF
8.3
capacitance
6.0
Cout
pF
2.6
1.9
Power oscillation
1236
---
Eb = 1,500 V dc;
Po
110
---
W
Ib = 150 mA dc;
Ec2 = 250 V dc;
F = 150 MHz
See footnotes at end of table.
2