MIL-PRF-1/1099H
│
│
│
Dimensions
│
│
│
│
LTR
Inches
Millimeters
│
│
Conformance inspection, part 2
│
│ Min
│ Max
│ Min
│ Max
│
│
│ 3.125
│ 3.375 │ 79.37
│ 85.73
│
B
│
│ 12.532
│ 13.875 │ 318.31
│ 352.43
│
C
│
│ ------
│ 2.281
│ -----
│ 57.94
│
F
│
│
│ 2.662
│ 2.682 │ 67.61
│ 68.12
R
│
│ 89.6º
│ 90.4º
│ ----
│ ----
│
T
│
│
Conformance inspection, part 3
│
│
See note k
│
│ 8.000
│ 9.000
│ 203.20 │ 228.60
│
D
│
│ 5.938
│ 6.062
│ 150.83 │ 153.97
│
E
│
│ 2.875
│ 3.125
│ 73.03
│ 79.38
│
H
│
│ 3.925
│ 5.000
│ 99.70
│ 127.00
│
K
│
│
│ 0.309
│ 0.315
│ 7.85
│ 8.00
S
│
│ 0.552
│ 0.572
│ 14.02
│ 14.53
│
U
│
│
Reference dimensions
│
│
│
W
4,500 (circular mils)
│
│
│
X
1,500 (circular mils)
│
│
│
Z
2,000 (circular mils)
NOTES:
a. A socket adapter (figure 3) is supplied with each thyratron for applications that required
electrical isolation of the thyratron mounting flange from the cathode (K) lead.
b. Dimension D is measured from bottom of flange to center of lead lug hole.
c. Flange cutouts are optional.
d. Leads shall be flexible. Leads shall be identified 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-AS25036-157
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 2. Outline drawing of electron tube type 5948B (ceramic version) - Continued.
7
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