MIL-PRF-19500/421G
Dimensions
Dimensions
Notes
Ltr
Notes
Ltr
Inches
Millimeters
Inches
Millimeters
Min
Max
Min
Max
Min
Max
Min
Max
CD
.305
.335
7.75
8.51
LS1
.0707 Nom.
1.796 Nom.
5
CH
.140
.260
3.56
6.60
LS2
.1000 Nom.
2.540 Nom.
5
HD
.335
.370
8.51
9.40
LU
.016
.019
0.41
0.48
4, 7
HT
.009
.125
0.23
3.18
TL
.029
.045
0.74
1.14
6
LD
.016
.021
0.41
0.53
3, 7
TW
.028
.034
0.71
0.86
LL
.500
1.750
12.70
44.45
7
NOTES:
1.
Dimensions are in inches.
2.
Millimeters are given for general information only.
3.
Measured in the zone beyond .250 inch (6.35 mm) from the seating plane.
4.
Measured in the zone .050 inch (1.27 mm) and .250 inch (6.35 mm) from the seating plane.
5.
When measured in a gauging plane .054 +.001, -.000 inch (1.37 +0.03, -0.00 mm) below the seating
plane of the transistor, maximum diameter leads shall be within .007 inch (0.18 mm) of their true
location relative to a maximum width tab. Smaller diameter leads shall fall within the outline of the
maximum diameter lead tolerance.
6.
Measured from the maximum diameter of the actual device.
7.
All six leads.
In accordance with ASME Y14.5M, diameters are equivalent to φx symbology.
8.
FIGURE 2. Physical dimensions of transistor type 2N4854 (all quality levels, similar to TO-78).
4
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