MIL-PRF-19500/453F
UB
Symbol
Dimensions
Note
Symbol
Dimensions
Note
Inches
Millimeters
Inches
Millimeters
Min
Max
Min
Max
Min
Max
Min
Max
BH
.046
.056
1.17
1.42
.036
.040
0.91
1.02
LS1
BL
.115
.128
2.92
3.25
.071
.079
1.81
2.01
LS2
BW
.085
.108
2.16
2.74
LW
.016
.024
0.41
0.61
CL
.128
3.25
r
.008
.203
CW
.108
2.74
r1
.012
.305
LL1
.022
.038
0.56
0.96
r2
.022
.559
LL2
.017
.035
0.43
0.89
NOTES:
1. Dimensions are in inches.
2. Millimeters are given for general information only.
3. Hatched areas on package denote metallized areas.
4. Lid material: Kovar.
5. Pad 1 = Base, Pad 2 = Emitter, Pad 3 = Collector, Pad 4 = Shielding connected to the lid.
* 6. In accordance with ASME Y14.5M, diameters are equivalent to φx symbology.
* FIGURE 2. Physical dimensions, surface mount (2N5109UB).
3
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