MIL-PRF-1/501C
TABLE 1. Testing and inspection -Continued.
Inspection
Method
Notes
Conditions
Symbol
Limits
Limits
Units
Min
Max
Conformance inspection, part 2
Heater current
1301
---
If
540
660
mA
Electrode current
5201
---
Ec1 = 0
Ib1
-15
10
A dc
(anode No. 1)
Electrode current (cathode)
5201
---
Light = 4 fL
Ik
---
1,000
A dc
Base alignment
5101
---
+3D4; pin No. 1
---
---
---
---
(electrostatic types)
Angle between traces
5101
---
Angle
87
93
Degrees
Neck and base alignment
5101
---
---
---
---
---
(electrostatic types)
Stray light emission
5216
---
---
---
---
---
(conventional types)
Line width A
5226
---
Light = 4 fL
Width
---
0.4
mm
(electrostatic types)
Line width B
5226
---
Light = 4 fL
Width
---
0.4
mm
(electrostatic types)
Focusing voltage
---
---
Light = 4 fL
Eb1
240
450
V dc
Deflection factor
5248
---
1D2
DF
75
102
V dc/in.
Deflection factor
5248
---
3D4
DF
57
78
V dc/in.
Heater-cathode
5251
---
---
---
---
---
leakage current
Secureness of base,
1101
---
---
---
---
---
cap and insert
Base pin solder depth
1111
---
---
---
---
---
Permanence of marking
1105
---
---
---
---
---
Conformance inspection, part 3
---
---
---
---
Group C;
---
3
Life test
Light = 4 fL;
Eb2 = 2,750 V dc;
t = 500 hours (min)
---
Life-test end points:
mm
0.4
---
Width
Light = 3.4 fL
---
Line width A
mm
0.4
Width
---
Light = 3.4 fL
---
Line width B
V dc
45
---
Light = 3.4 fL
---
Modulation
Ec1
NOTES:
1. This test to be performed at the conclusion of the holding period.
2. This value is recommended only for low-velocity deflecting and low-ambient light levels.
3. During life-test operation the heater voltage shall be regularly interrupted on a 13 minutes "on", 7 minutes "off" cycle. Life test
minimum duration shall be the total of "on" plus "off" hours.
3