MIL-PRF-19500/315G
Dimension
Symbol
Notes
Inches
Millimeters
Min
Max
Min
Max
CH
.320
.458
8.13
11.63
HT
.250
6.35
5
E
.505
12.83
CD
.318
.380
8.08
9.65
.380
.437
9.65
11.10
5
CD1
HF
.423
.438
10.74
11.13
.180
.215
4.57
5.46
7
e1
E
.080
.110
2.03
2.79
7
.090
.150
2.29
3.81
4, 8
A1
OAH
.570
.763
14.48
19.38
SL
.400
.455
10.16
11.56
SU
.078
1.98
9
T
.040
.065
1.02
1.65
.040
.070
1.02
1.78
6
T1
SD
0.190-32UNF-2A
10
Z
.002
0.05
.006
0.15
Z1
NOTES:
1. Dimensions are in inches.
2. Millimeters are given for general information only.
3. Terminal 1 - emitter; terminal 2 - base; terminal 3 - collector; terminal 4 - case.
4. Chamfer or undercut on one, or both, ends of hexagonal portion is optional.
5. The outline contour, with the exception of the hexagon, is optional within cylinder defined by CD1 and HT.
6. Terminal 4 can be flattened and pierced or hook type. A visual index is required when the flattened and pierced
tab terminal contour (identical to the adjacent terminals) option is used.
7. Angular orientation of terminals with respect to hexagon is optional.
8. A1 dimension does not include sealing flanges.
9. SU is the length of incomplete or undercut threads.
10. SD is the outer diameter of coated threads. (Reference: Screw thread standards for Federal Standard
H28/1 , (FED-STD-H28/1).
* FIGURE 2. Physical dimensions of transistor type 2N3749 (TO-111) - Continued.
6
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