A transistor has a JFET gate region of a first conductivity type formed at {HEAD ~ the face} of {TAIL ~ a semiconductor layer} to laterally and downwardly surround a drift region of a second conductivity type 
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A transistor has a JFET gate region of a first conductivity type formed at { HEAD ~ the face } of { TAIL ~ a semiconductor layer } to laterally and downwardly surround a drift region of a second conductivity type
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH