Patent ID: 8415773

Claim:
A semiconductor component comprising: a first region having a first zone doped with a first dopant selected from the group consisting of one of donors and acceptors; a second region doped with a second dopant of the other of donors and acceptors; a pn junction between said first region and said second region; wherein said second region includes a second zone having a low concentration of said second dopant, said second zone being disposed adjacent to said first zone, the boundary between said first and second zones forming said pn junction; a third zone having a concentration of said second dopant, and constituting buffer means for buffering the propagation of an electric field therethrough; a first interface between said second zone and said third zone; a fourth zone having a high concentration of said second dopant; and a second interface between said third zone and said fourth zone; wherein said concentration of said second dopant in said third zone is higher at said first interface than it is at said second interface.