Patent ID: 9553210
Date: 2017-01-24
CPC Classifications: H01L

Claim:
1. A high frequency power diode, comprising: a semiconductor wafer having a first main side and a second main side opposite to the first main side; a first layer formed in the semiconductor wafer adjacent to the first main side, the first layer having a first conductivity type which is either n- or p-type conductivity; a second layer formed in the semiconductor wafer adjacent to the second main side, the second layer having a second conductivity type which is either n- or p-type conductivity but different from the first conductivity type; a third layer formed in the semiconductor wafer between the first layer and the second layer the third layer having the second conductivity type; wherein the first layer has a first conductivity type dopant concentration decreasing from 10 wherein the second layer has a second conductivity type dopant concentration decreasing from 10 wherein the third layer has a second conductivity type dopant concentration of 1.5·10 wherein the first conductivity type dopant concentration in the first layer at a distance of 50 μm from the first main side and the second conductivity type dopant concentration in the second layer at a distance of 50 μm from the second main side is 10