MIL-PRF-1/1099H
│
│
│
Dimensions
│
│
│
│
LTR
Inches
Millimeters
│
│
Conformance inspection, part 2
│
│
│ Max
│ Min
│ Max
│
Min
│
│
15.250 │ 16.250 │ 387.35 │ 412.75
│
A
│
│
│
│ 5.125 │ 123.83 │ 130.18
B
4.875
│
│
13.125 │ 13.875 │ 333.38 │ 352.42
│
C
│
│
│ 4.562
│ 112.73 │ 115.87
│
F
4.438
│
│
2.662 │ 2.682
│ 67.61 │ 68.12
│
R
│
│
│
│
T
89.6º
90.4°
│
│
Conformance inspection, part 3
│
│
See note k
│
│
│ 6.000
│ 127.00 │ 152.40
│
D
5.000
│
│
│ 6.062
│ 150.83
│ 153.97
│
E
5.938
│
│
│ 4.656
│ 110.34 │ 118.26
│
J
4.344
│
│
│
│ 11.062
│ 252.43 │ 280.97
K
9.938
│
│
│ 1.562
│ 36.53
│ 39.67
│
L
1.438
│
│
│ 1.438
│ 33.32
│ 36.53
│
M
1.312
│
│
│ 0.562
│ 11.13
│ 14.27
│
N
0.438
│
│
0.309 │ 0.315
│ 7.85
│ 8.00
│
S
│
│
0.559 │ 0.573
│ 14.20
│ 14.55
│
U
│
│
│
│ 12.70
│
│
V
0.500
│
│
│ 2.000
│ -----
│ 50.80
│
AC
-----
│
│
│ 1.000
│ -----
│ 25.40
│
P
-----
│
│
│ 6.500
│ -----
│ 175.10
│
AA
-----
│
│
Reference dimensions
│
│
│
│
G
0.094
2.39
│
│
│
│
AB
0.500
12.70
│
│
│
W
4,500 (circular mils)
│
│
│
X
1,500 (circular mils)
│
│
│
Z
2,000 (circular mils)
NOTES:
a. Dimension P designates the area to be used for clamping.
b. Dimension D is measured from bottom of base insert to center of lead lug hole.
c. Base, metal shell, with mounting flange and phenolic insert. Flange secured to base with rivets,
or equivalent. Insert shall be low-loss phenolic wafer or laminated phenolic resin, permanently
marked as follows: G (grid), H (heater), R (reservoir), HR (heater-reservoir), and K (cathode).
All feed-through fittings shall be equipped with setscrews, or equivalent.
d. Leads shall be flexible. Dimensions W , X, and Z apply to cross-sectional area. Lead identification
insulation sleeving and lugs shall be as follows:
Lead
Color
Sleeving
Lugs (see note j)
G (grid)
Green
H-A-1(see note e)
SAE-AS25036-108
H (heater)
Yellow
H-A-1 or H-B-1
SAE-A25036-157
HR (heater) (see note g)
Yellow with black sleeve
H-A-1 or H-B-1
SAE-AS25036-157
HR (reservoir) (see note g)
Red with yellow sleeve
H-A-1 or H-B-1
SAE-AS25036-108
R (reservoir)
Red
H-A-1 or H-B-1
SAE-AS25036-108
K (cathode)
Black
H-A-1 or H-B-1
SAE-AS25036-157
e.
As specified in specification MIL-I-3190.
f.
Reservoir voltage shall be inscribed once above each mounting hole on base wall.
g.
Heater lead internally connected to reservoir lead.
h.
Cathode heater connection to this lead.
j.
Lugs shall be permanently identified with symbols as follows: G (grid), K (cathode), H (heater),
R (reservoir), and HR (heater-reservoir).
k. Holes S shall be inspected for orientation by using the base gage outlined in figure 4.
FIGURE 1. Outline drawing of electron tube type 5948A (glass version) - Continued.
5
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