Patent ID: 6888205

Claim:
A metal oxide semiconductor transistor integrated in a substrate of semiconductor material and comprising: a gate structure located on one surface of the substrate and including an insulating gate layer, a gate electrode on the insulating gate layer, and lateral spacers extending from the surface of the substrate on lateral walls of the insulating gate layer and the gate electrode; the insulating gate layer comprising a first portion having a first thickness and a second portion having a second thickness that is less than the first thickness; a first active region including a drain region; and a second active region spaced apart from the first active region and including a source region; the first and second active regions being integrated in the substrate, the first portion of the insulating gate layer being adjacent to the first active region, and the second portion being adjacent to the second active region; the first thickness provides a predetermined value of the breakdown voltage of the transistor, and the second thickness provides a predetermined value of the transconductance of the transistor.