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