MIL-PRF-1/267G
TABLE I. Testing and Inspection - Continued.
Limits
MIL-STD-1311
Type
Conditions
Symbol
Requirement or test
Unit
method
Min
Max
Conformance inspection,
part 2 - Continued
Heater-cathode leakage
5251
Both
---
---
---
---
current
Base pin solder depth
1111
Both
---
---
---
---
Secureness of base, cap,
1101
Both
---
---
---
---
or insert
Permanence of marking
1105
Both
---
---
---
---
Conformance inspection,
part 3
Life-test
---
Both Group C;
---
---
---
---
t = 500 hours
minimum;
Eb2 = 2,750 V dc
P1
Light = 7 fL
---
---
---
---
P2
Light = 2 fL
---
---
---
---
Life-test end points
---
Both Line width A
Width
---
0.65
mm
Line width B
Width
---
0.75
mm
Heater-cathode
---
---
---
---
leakage current
Grid No. 1
---
---
---
---
leakage current
Grid No. 2
---
---
---
---
leakage current
Anode No. 1
---
---
---
---
leakage current
Stray light
---
---
---
---
emission
P1
Light = 4.5 fL
---
---
---
---
ĆEc
Modulation
---
50
V dc
P2
Light = 1.5 fL
---
---
---
---
ĆEc
Modulation
---
45
V dc
NOTES:
1. This test to be performed at the conclusion of the holding period.
2. With a raster pattern adjusted so that its widest point just touches the sides of a 2.05-inch (52.07 mm) square,
no point on the raster sides shall be within an inscribed 1.95-inch (49.53 mm) square.
5
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