MIL-PRF-1/390E
Dimensions are in inches with metric
equivalents (mm) in parentheses
Ltr
Minimum
Maximum
Qualification inspection
G
Base:
B12-43 or B10-75
Conformance inspection, part 2
A
8.875 (225.43)
9.375 (238.13)
B
2.880 (73.15)
3.140 (79.76)
C
---
1.470 (37.34)
D
1.370 (34.80)
---
Reference dimensions (see note 1)
E
3.875 (98.43)
1
E
3.563 (90.50)
F
8.000 (203.20)
H
17.000 (431.80)
J
0.350
(8.89)
K
0.250
(6.35)
1
K
0.125
(3.18)
L
0.500 (12.70)
NOTES:
1. These dimensions are for information only and are not required for inspection purposes.
2. Useful screen radius.
3. Clear or filter glass.
FIGURE 1. Outline drawing of electron tube types 3RP1 and 3RP1A.
4