MIL-PRF-19500/538G
Dimensions
Ltr
Notes
Inches
Millimeters
TO-3
Min
Max
Min
Max
CD
.875
22.22
3
CH
.270
.380
6.86
9.65
HR
.495
.525
12.57
13.34
.131
.188
3.33
4.78
HR1
HT
.060
.135
1.52
3.43
.050
1.27
5, 9
L1
LD
.038
.043
0.97
1.09
5, 9
LL
.312
.500
7.92
12.70
5
MHD
.151
.161
3.84
4.09
7
MHS
1.177
1.197
29.90
30.40
PS
.420
.440
10.67
11.18
4
.205
.225
5.21
5.72
4, 5
PS1
.655
0.675
16.64
17.14
4
S1
NOTES:
1.
Dimensions are in inches.
2.
Millimeters are given for general information only.
3.
Body contour is optional within zone defined by CD
4.
These dimensions shall be measured at points .050 inch (1.27 mm) to .055 inch (1.40 mm) below seating
plane. Measurement shall be made at seating plane.
5.
Both terminals.
6.
At both ends.
7.
Two holes.
8.
Terminal 1 is the emitter, terminal 2 is base. The collector shall be electrically connected to the case.
LD applies between L1 and LL. Diameter is uncontrolled in L1.
9.
In accordance with ASME Y14.5M, diameters are equivalent to φx symbology.
10.
FIGURE 1. Physical dimensions (TO-3) for 2N6676 and 2N6678.
3
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