MIL-PRF-1/1048D
TABLE I. Testing and inspection - Continued.
Inspection
Method
Conditions
Symbol
Unit
Limits
MIL-STD-1311
Min
Max
Conformance inspection,
part 2 - Continued.
lb3 = 25 μA dc
Line width A
5226
Width
---
0.65
mm
(electrostatic deflection)
Focusing voltage at cutoff
5246
Eb1
---
610
V dc
Deflection factor
5248
1D2 8/
DF
54
66
V dc/inch
Deflection factor
5248
3D4 8/
DF
43
53
V dc/inch
Deflection factor
5248
1D2; Eb3 = Eb2 = 2,000 V dc
DF
43
55
V dc/inch
Deflection factor
5248
3D4, Eb3 = Eb2 = 2,000 V dc
DF
36
44
V dc/inch
μA dc
Heater-cathode leakage current
5251
Ihk
---
15
Secureness of base, cap, or
1101
---
---
---
---
insert
Base pin solder depth
1111
---
---
---
---
Permanence of marking
1105
---
---
---
---
Conformance inspection,
part 3
Life-test provisions
---
Group C;
---
---
---
---
t = 500 hours (min);
Ib3 = 25 μA dc;
Eb2 = 3,500 V dc;
Eb3 = 10,.500 V dc
Ib3 - 18.75 μA dc
Life-test end points
---
ΔEc
Modulation
---
35
V dc
Line width A
Width
---
0.65
mm
Line width B
Width
---
0.75
mm
Grid No. 1 leakage
---
---
---
---
Anode No. 2 leakage
---
---
---
---
Heater-cathode leakage
---
---
---
---
Anode No. 1 leakage
---
---
---
---
Stray emission
---
---
---
---
See footnotes at top of next page.
4
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