MIL-PRF-1/1619D
TABLE I. Testing and inspection.
Limits
Inspection
Method
Conditions
Symbol
Unit
MIL-STD-1311
Min
Max
Conformance inspection,
part 1
54
Filament current
1301
If
49
A ac
Peak emission
1231
eb = ec = 2,500 v
is
35
---
a
1261
Ec
-67
-100
V dc
Electrode voltages
(grid)
A dc
Total grid current
1266
5/
Ic
---
-50
A dc
Primary grid emission
1266
Ef = 8.3 V ac;
Isg
---
-250
t = 15 sec;
Ic = 0.9 A dc;
anode grounded
Conformance inspection,
part 2
Amplification factor
1316A
Mu
19
26
---
pF
23.2
16.8
1331
Cgp
Direct interelectrode
pF
40.2
29.2
Cin
capacitance
pF
1.20
0.60
Cout
Power oscillation
1236
Eb = 4,000 V dc;
Po
4.2
---
kW
Ib = 1.8 A dc;
useful
F = 110 MHz;
Rg = 2,150 ohms
Conformance inspection,
part 3
Life-test
Group C;
---
---
---
---
power oscillation;
t = 500 hours
Life-test end points:
Peak emission
---
a
1231
is
28
A dc
Primary grid emission
1266
Isg
---
-250
C
Forced cooling
1143
Pp = 4.0 kW 3/ 6/
T
---
250
anode
core
C
T fil
---
250
seal
Pressure drop
---
Cooling
4/ 6/
Pressure
---
1.4
In.H20
See footnotes on top of next page.
2
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