MIL-PRF-1/878G
TABLE I. Testing and inspection.
Inspection
Method
Conditions
Symbol
Limits
Unit
MIL-STD-1311
Min
Max
Conformance inspection,
part 1
Filament current
1301
If
9.7
11.2
A ac
µA dc
Total grid current
1266
Ic
---
-15
Electrode voltage
1261
Ec
-27.0
-39.0
V dc
(grid)
µA dc
Primary grid emission
1266
Ef = 5.5 V ac; Ic = 175
Isg
---
-500
mA dc; t = 15
Peak emission
1231
eb = ec = 2,500 v
is
5.0
---
a
Conformance inspection,
part 2
Amplification factor
1316
Mu
31.0
41.0
---
1236
Eb = 3,000 V dc;
Po
540
---
W
Power oscillation
Ib = 300 mA dc;
F = 8 MHz
Cgp
Direct-interelectrode
1331
2.2
3.0
pF
Cin
capacitance
3.7
5.1
pF
Cout
---
0.6
pF
See footnotes at end of table.
2
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