Power switching semiconductor device with suppressed oscillation

A semiconductor device comprising:

• a substrate having a main surface;
• a first wiring pattern arranged on said main surface;
• a plurality of switching elements arranged on said first wiring pattern so that first main electrodes thereof are electrically connected with each other;
• a second wiring pattern arranged on said main surface;
• a plurality of first conductor wires having first ends connected to second main electrodes of said plurality of switching elements and second ends connected to said second wiring pattern;
• an external terminal connected to said second wiring pattern for electrically connecting said second main electrodes of said plurality of switching elements with the exterior through said second wiring pattern;
• and
• a voltage clamping element electrically connected between control electrodes and said second main electrodes of said plurality of switching elements.

A semiconductor device comprising:

• a substrate having a main surface;
• a first wiring pattern arranged on said main surface;
• a plurality of switching elements arranged on said first wiring pattern so that first main electrodes are electrically connected with each other;
• a second wiring pattern arranged on said main surface to extend along the direction of arrangement of said plurality of switching elements;
• a plurality of first conductor wires having first ends connected to second main electrodes thereof of said plurality of switching elements and second ends connected to said second wiring pattern;
• an external terminal connected to said second wiring pattern for electrically connecting said second main electrodes of said plurality of switching elements with the exterior through said second wiring pattern;
• a plurality of diodes, provided in the same number as said plurality of switching elements, arranged on said first wiring pattern so that first electrodes thereof are electrically connected with each other and arranged between said plurality of switching elements and said second wiring pattern to be adjacent to said plurality of switching elements in one-to-one correspondence;
• a plurality of second conductor wires having first ends connected to second electrodes of said plurality of diodes and second ends connected to said second wiring pattern;
• and
• a plurality of third conductor wires having first ends connected to said second main electrodes of said plurality of switching elements, intermediate potions connected to said second electrodes of at least part of said plurality of diodes and second ends connected to said second wiring pattern thereby electrically connecting all said second main electrodes of said plurality of switching elements with each other without through said second wiring pattern.