MIL-PRF-1/1725B
TABLE I. Testing and inspection.
MIL-STD-
Inspection
1311
Conditions
Acceptance
Symbol
Limits
Unit
method
level
5/
Min
Max
Conformance inspection,
part 1
Peak emission
1231
eb = ec2 = ec1 = 2.5 kv
0.65
is
40
----
a
Filament current
1301
0.65
If
39.5
43.5
A ac
Electrode voltage (grid)
1261
0.65
Ec1
-95
-127
V dc
Total grid current
1266
0.65
Ic1
----
-20
µA dc
Electrode current (screen)
1256
0.65
Ic2
0
+25
mA dc
Primary-grid emission
1266
Ef = 10 V; Ic1 = 400 mA dc;
0.65
Isg1
----
-50
µA dc
(control)
t = 15; anode and g2 grounded
Primary-grid emission
1266
Ef = 10 V; Ic2 = 400 mA dc;
0.65
Isg2
----
-100
µA dc
(screen)
t= 15; Ec1 = 0; anode grounded
`
Conformance inspection,
part 2
Current division
1372
Eb = Ec2 = 850 V dc;
----
egk
----
0
v
(method B, short pulse)
Ec1 = -300 V dc;
ic2
----
0.95
a
egk/ib = 5.5 a
Electrode voltage (grid)
1261
Eb = 4.0 kV dc;
----
Eco
----
-310
V dc
Ec2 = 850 V dc
Ec1/Ib = 1.0 mA dc
Direct-interelectrode
1331
Grounded cathode
Cin
120
140
pF
capacitance
----
Cout
10.5
14.5
pF
Cgp
----
1.40
pF
Direct-interelectrode
1331
Grounded grid
Cin
55.0
67.0
pF
capacitance
----
Cout
10.5
14.5
pF
Cpk
----
0.20
pF
Linear amplifier power
2204
Class AB1 amplifier;
3rd IM
-32
----
dB
output and distortion,
F = 2 to 30 MHz;
----
5th IM
-37
----
dB
two-tone method
Eb = 5.0 kV dc;
Ec2 = 850 V dc;
Ec1/Ibo = 500 mA dc;
Eg1/Po = 5.0 kW (useful);
R = 1700 ± 100 ohms; anode
loaded Q = 15 ± 2; Rg = 1000
ohms (max)
See footnotes at end of table.
2
For Parts Inquires call Parts Hangar, Inc (727) 493-0744
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business