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| MIL-E-1/175J
NOTES:
1. See "Reduced pressure (altitude) rating", and altitude, maximum peak voltage in the basic document.
2. This test to be performed at the conclusion of the holding period.
3. Prior to this test, the tube shall be preheated a minimum of 5 minutes at the conditions specified below. The 3-
minute test is not permitted. Test at preheat conditions within 3 seconds after preheating. Total grid current (2)
shall be the last test performed on the sample selected for the total grid current (2) test.
Ef
Ec1
Ec2
Ec3
Eb
Rk
Rg1
V
V dc
V dc
V dc
V dc
Ohms
Meg
7.5
0
100
0
100
220
0.47
4. Envelope temperature (TE) requirements, when measured in accordance with the temperature by conduction-
band measurement (method 1226), will be satisfied if a tube having bogey IB (+5 percent) under normal test
conditions, is determined to operate at or above minimum specified temperature at any position in the life-test
rack.
Custodians:
Preparing activity:
Army - CR
DLA - CC
Navy - EC
Air Force - 11
DLA - CC
(Project 5960-3610)
Review activities:
Army - MI
Navy - AS, CG, MC, OS
Air Force - 99
5
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