MIL-PRF-1/1239F
TABLE I. Testing and inspection.
Inspection
Method
Notes
Condition
Symbol
Limits
Unit
MIL-STD-1311
Min
Max
Conformance inspection,
part 1
µA dc
Total grid current
1266
6/
Ec1/Ib = 115 mA dc
Ic1
---
-8
Electrode current (screen)
1256
---
Ec1/Ib = 115 mA dc
Ic2
-8.0
2.0
mA dc
Electrode voltage (1) (grid)
1261
---
Ec1/Ib = 115 mA dc
Ec1
-6
-15
V dc
Electrode voltage (2) (grid)
1261
---
Ec1/Ib = 1.0 mA dc
Ec1
---
-48
V dc
Pulsing emission
1231
7/
etd/ik = 10 a
etd
---
300
v
Conformance inspection,
part 2
Heater current
Type 6816 Ef only
1301
---
If
1.84
2.26
A
---
Type 6884 Ef only
If
0.48
0.60
A
µA dc
Primary grid emission
1266
---
Eg1/g1 input = 2 W;
Isg1
---
-2
(control)
t = 30; anode and g2 grounded
µA dc
Primary grid emission
1266
---
Eg2/g2 input = 4.5 W;
Isg2
---
-3
(screen)
t = 30; anode and g1 grounded
Interelement leakage
1366
5/
Supply voltage = 200 V dc
R
1.0
---
Meg
resistance, cold
F = 400 ± 20 MHz;
Power output
2214
4/
Po
80
---
W
(useful)
Ib = 180 mA dc (max);
Ic1 = 30 mA dc (max);
t = 120; Pd = 3.3 W (max);
Type 6816 Ef = 5.7 V
Type 6884 Ef = 24.0 V
Power oscillation
1236
---
F = 15 MHz; Eb = 850 V dc;
Po
80
---
W
Ec2 = 300 V dc (max);
(useful)
Ib = 150 mA dc;
Rg1 = 4,000 ohms (max);
Ic1 = 30 mA dc;
Pg2 = 4.5 W (max); t = 120
Current division
1372
---
Eb = 350 V dc;
egk
-3.0
+17
v
(method A)
Ec1 = -100 V dc;
ic1
0
130
ma
egk/ib = 0.6 a; prr = 10 to 12;
ic2
10
70
ma
tp = 4,500 to 5,000 µs
Electrode current
1256
---
Ec1 = +2 V dc;
Ic1
6
---
mA dc
(positive grid)
anode and g2 floating;
no other voltages except Ef
Direct-interelectrode
1331
---
Use capacitance fixture in
Cg1k
11.0
15.0
pF
capacitance
accordance with 289-JAN
Cg1g2
15.0
20.0
pF
Cg2p
4.2
5.2
pF
Cg1p
---
0.065
pF
Cpk
---
0.013
pF
Cg2k
0.20
0.45
pF
See footnotes at end of table.
2
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