Patent ID: 8304305

Claim:
A semiconductor component, comprising: a semiconductor body comprising a first surface and a second surface arranged opposite the first surface; a plurality of trenches which extend substantially perpendicularly into the semiconductor body proceeding from the first surface; mesa structures located between adjacent trenches; at least one drift region of a first conduction type which is arranged between the trenches and the second surface; body regions of a second conduction type, which is complementary to the first conduction type, arranged in the mesa structures between the drift region and the first surface; at least one buffer region of the first conduction type which surrounds a lower region, facing toward the second surface, of the trenches including the bottoms of the trenches and is arranged between the drift region and the body regions, wherein the buffer region comprises a higher dopant concentration than the drift region; and at least one protective region of the second conduction type which surrounds the bottom of at least one trench and which is completely embedded into the buffer region, wherein the buffer region comprises a dopant concentration of approximately 8*10 14 /cm 3 to approximately 3*10 16 /cm 3 , and wherein the protective region comprises a dopant concentration of approximately 2*10 15 /cm 3 to approximately 1*10 17 /cm 3 .