MIL-PRF-1/1296F
TABLE I. Testing and inspection - Continued.
Limits
Inspection
Method
Conditions
Symbol
Min
Max
Unit
Conformance inspection, part 2 -
Continued
Neck and base alignment
5101
----
----
----
----
(electrostatic types)
Line width "A" (electrostatic
5226
Ib3 = 25 2A dc
Width
----
0.45
mm
deflection)
Line width "B" (electrostatic
5226
Ib3 = 25 2A dc
Width
----
0.60
mm
deflection)
Cathode illumination
5216
----
----
----
----
Focusing voltage at cutoff
5246
Eb1
----
510
V dc
Focusing voltage at modulation
5246
Eb1
340
----
V dc
condition
Deflection factor
5248
1D2
DF
68
82
V dc/in.
Deflection factor
5248
3D4
DF
42
52
V dc/in.
Heater-cathode leakage current
5251
----
----
----
----
Grid emission
----
6/
----
----
----
----
Secureness of base, cap, or
1101
----
----
----
----
insert
Base pin solder depth
1111
----
----
----
----
Permanence of marking
1105
----
----
----
----
Conformance inspection, part 3
Life test
----
Group C; Ib3 = 25 2A dc;
----
----
----
----
t = 500 hours
Life test end points:
Modulation
5223
Ib3 = 20 2A dc
Ec1
----
38
V dc
Line width "A"
5226
Width
----
0.45
mm
Line width "B"
5226
Width
----
0.60
mm
Periodic-check tests
Base material insulating quality
1216
Zone 5 (minimum)
----
----
----
----
Neck and bulb alignment
5101
Dia
----
1.87
Inch
(electrostatic types)
Deflection-factor uniformity
5248
----
----
2
%
See footnotes at end of table.
3