It is formed comprised of a deep first diffused layer and {HEAD ~ a shallow second diffused layer} positioned between the first diffused layer and {TAIL ~ the channel region} 
positioned between
It is formed comprised of a deep first diffused layer and { HEAD ~ a shallow second diffused layer } positioned between the first diffused layer and { TAIL ~ the channel region }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL