MIL-PRF-1/1165F
TABLE I. Testing and inspection. Continued
Limits
MIL-STD-
Acceptance
1311
Inspection
Notes
Conditions
level
Symbol
Unit
Method
Min
Max
17
Conformance
inspection, part 3 -
Continued
Ebb = 250 Vdc; Rk/k = 270 ohms;
1516
-----
-----
Stability life
Ehk = 200 Vdc; Rg/g = 1.0 MegΩ
Rp/a = 30,000 ohms; TA = room;
Rhk = 5,000 ohms
------
Stability life-test end
point:
ĆSm
15
-----
3
1306
%
Transcoductance (1).
t
Change of individual
tubes
-----
-----
-------
-----
------
Ebb = 250 Vdc;
12,
1501
Intermittent life
Rk/k = 270 ohms; Ekk = 200 Vdc;
16
Rg/g = 1.0 MegΩ;
Rp/a = 30,000 ohms;
Rnk = 5,000 ohms;
TE = 250 °C (min);
13
-------
Intermittent life-test
end points: (200 hours);
Total grid current
μAdc
0
3
1266
Ic
-1.0
Eb = 150 Vdc; Ec = -1.5 Vdcl
Rk = 0; Rg= 1.0 MegΩ
330
If
mA
380
Heater current
ĆSm
----
1301
%
Transconductance (1),
25
3
1306
t
Change of individual
tubes
ĆSm
------
3
1306
%
Transconductance (2)
Ef = 5.5 V
20
Ef
3
1336
Heater-cathod leakage
μAdc
-----
3
1211
Ihk
Insulation of electrodes
15
Meg Ω
200
1306
R
Tansconductance (1),
----
-----
Avg
%
average change
15
ĆSm
t
NOTES:
1.
See "Reduced pressure (altitude) rating," and altitude, maximum peak voltage in the basic document.
2.
This test shall be conducted in a suitable reactor with the required intensity and dosage that is not less than 10 percent of
the specified rating. Before and after irradiation , the tubes under test (TUT) shall be within the specified limits for all
electrical tests listed herein under quality conformance inspection, part 1.
3.
Test each unit separately.
4.
This test shall be performed at the conclusion of the holding period.
4
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