MIL-PRF-1/49F
TABLE I. Requirements or tests - Continued.
MIL-STD-
Unit
Limits
1311
Requirement or test
Conditions
Symbol
Acceptance
method
Level
Min
Max
(see note 6)
Conformance inspection,
part 3
1501
Intermittent life-test
Group A; Rk = 125;
---
---
---
---
---
Rg = 1 Meg Ώ;
(500 hours)
Ehk = -300 V dc
See note 1
---
Intermittent life-test
end points (500 hours)
μmhos
1306
Transconductance
---
Sm
4,900
---
μA dc
1266
Total grid current
---
Ic
---
-10
μA dc
1336
Heater-cathode
---
Ihk
---
100
NOTES:
1. Tie 1a to 2a; 1g to 2g; 1k to 2k.
2. With both units operating, Ic is the sum of I1c and I2c.
3. With both units operating, read each unit separately.
4. This test is to be performed at the conclusion of the holding period.
5. Read each unit separately: ground elements of opposite side; Rk = 0.
6. This specification sheet utilizes an accept on zero defect sampling plan in accordance with MIL-PRF-1, table III.
Referenced documents. In addition to MIL-PRF-1, this document references MIL-STD-1311.
Changes from previous issue. Marginal notations are not used in this revision to identify changes with respect to the previous
issue due to the extent of the changes.
Custodians:
Preparing activity:
Army - CR
DLA - CC
Navy - EC
Air Force - 11
(Project 5960-2007-027)
DLA - CC
Review activities:
Army - AR
Navy - AS, CG, MC
Air Force - 99
NOTE: The activities listed above were interested in this document as of the date of this document. Since organizations and
responsibilities can change, you should verify the currency of the information above using the ASSIST Online database at
3