MIL-PRF-19500/374E
Dimensions
Symbol
Inches
Millimeters
Notes
Min
Max
Min
Max
CH
.345
.400
8.76
10.16
A1
.250
6.35
3
CD
.370
.437
9.40
11.10
3
CD1
.318
.380
8.08
9.65
HF
.424
.437
10.77 11.10
PS
.180
.215
4.57
5.46
5
PS1
.080
.110
2.03
2.79
5
HT
.090
.140
2.29
3.56
2,6
OAH
.575
.675
14.61 17.15
1
UD
.155
.189
3.94
4.80
SL
.400
.455
10.16 11.56
SU
.078
1.98
7
T
.040
.065
1.02
1.65
T1
.040
.065
1.02
1.65
4
SD
.190-32 UNF-2A
8
Z
.002
0.05
Z1
.006
0.15
NOTES:
1.
Terminal 1, emitter; terminal 2, base; terminal 3, collector; terminal 4, case.
2.
Chamfer or undercut on one or both ends of hexagonal portion is optional.
3.
The outline contour with the exception of the hexagon is optional within cylinder defined by CD1
and A1.
4.
Terminal r 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.
The case terminal (hook) is mechanically connected to the case. The other three terminals shall
be electrically isolated from the case.
5.
Angular orientation of terminals with respect to hexagon is optional.
6.
HT dimension does not include sealing flanges.
7.
SU is the length of incomplete or undercut threads.
8.
SD is the pitch diameter of coated threads. Reference: Screw threads standards for Federal
Service Handbook H28, part I.
9.
Dimensions are in inches.
*
10.
Millimeters are giving for general information only.
In accordance with ASME Y14.5M, diameters are equivalent to x symbology.
*
11.
* FIGURE 1. Physical dimensions for transistor types 2N3996 and 2N3997 - Continued.
4
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