Patent ID: 7605412

Claim:
A Junction Field Effect Transistor (JFET) comprising: a semiconductor layer of a first conductivity type; a well region of a second conductivity type formed in a substrate, the well region including a channel region having the same conductivity type as the well region and having an average dopant concentration less than the average dopant concentration of remaining portions of the well region; and wherein the channel region comprises a plurality of alternating implant and diffusion regions of the second conductivity type, the implant regions being separated from one another by the diffusion regions, and the implant regions having a higher average dopant concentration than the diffusion regions; a source region and a drain region of the second conductivity type arranged in spaced apart relationship in the well region; and a gate region of the first conductivity type interposed between the source region and the drain region, and extending through the channel region of the well region and positioned on the implant and diffusion regions.