FIG. 1 is a front elevational view of a first embodiment of a semiconductor based switching device showing our new design;
FIG. 2 is rear elevational view thereof;
FIG. 3 is a top plan view thereof;
FIG. 4 is a bottom plan view thereof;
FIG. 5 is a right side elevational view thereof;
FIG. 6 is a left side elevational view thereof;
FIG. 7 is a perspective view thereof;
FIG. 8 is a front elevational view of a second embodiment of a semiconductor based switching device showing our new design;
FIG. 9 is rear elevational view thereof;
FIG. 10 is a top plan view thereof;
FIG. 11 is a bottom plan view thereof;
FIG. 12 is a right side elevational view thereof;
FIG. 13 is a left side elevational view thereof;
FIG. 14 is a perspective view thereof;
FIG. 15 is a front elevational view of a third embodiment of a semiconductor based switching device showing our new design;
FIG. 16 is rear elevational view thereof;
FIG. 17 is a bottom plan view thereof;
FIG. 18 is a top plan view thereof;
FIG. 19 is a right side elevational view thereof;
FIG. 20 is a left side elevational view thereof;
FIG. 21 is a perspective view thereof;
FIG. 22 is a front elevational view of a fourth embodiment of a semiconductor based switching device showing our new design;
FIG. 23 is rear elevational view thereof;
FIG. 24 is a bottom plan view thereof;
FIG. 25 is a top plan view thereof;
FIG. 26 is a right side elevational view thereof;
FIG. 27 is a left side elevational view thereof;
FIG. 28 is a perspective view thereof;
FIG. 29 is a front elevational view of a fifth embodiment of a semiconductor based switching device showing our new design;
FIG. 30 is rear elevational view thereof;
FIG. 31 is a top plan view thereof;
FIG. 32 is a bottom plan view thereof;
FIG. 33 is a right side elevational view thereof;
FIG. 34 is a left side elevational view thereof;
FIG. 35 is a perspective view thereof;
FIG. 36 is a front elevational view of a sixth embodiment of a semiconductor based switching device showing our new design;
FIG. 37 is rear elevational view thereof;
FIG. 38 is a top plan view thereof;
FIG. 39 is a bottom plan view thereof;
FIG. 40 is a right side elevational view thereof;
FIG. 41 is a left side elevational view thereof; and,
FIG. 42 is a perspective view thereof.
The broken line portion of the figure drawings is included to show unclaimed subject matter only and forms no part of the claimed design.