A second semiconductor region of {HEAD ~ a second conductivity type} is disposed on {TAIL ~ the semiconductor material} proximate the first semiconductor region and in electrical communication with the at least one of the one or more reference electrodes 
A second semiconductor region of { HEAD ~ a second conductivity type } is disposed on { TAIL ~ the semiconductor material } proximate the first semiconductor region and in electrical communication with the at least one of the one or more reference electrodes
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH