Patent ID: 9711467
Date: 2017-07-18
CPC Classifications: H01L,H03H

Claim:
1. A method for manufacturing a semiconductor component having a common mode filter monolithically integrated with a protection device, comprising: providing a semiconductor material having a major surface and a resistivity of at least 5 ohm-centimeters, the semiconductor material including a first epitaxial layer of a first conductivity type over the semiconductor substrate and a second epitaxial layer of a second conductivity type over the first epitaxial layer and buried layer of the first conductivity type formed from portions of the first and second epitaxial layers; forming a plurality of trenches in the semiconductor material, wherein forming the plurality of trenches includes forming at least first, second, third, and fourth trenches, wherein a portion of the semiconductor material between the first and second trenches serves as a first device region, a portion of the semiconductor material between the second and third trenches serves as a second device region, and a portion of the semiconductor material between the third and fourth trenches serves as a third device region; forming the protection device from the semiconductor material between first and second trenches of the plurality of trenches; and monolithically integrating the common mode filter with the protection device.