In accordance with one embodiment of the presently claimed invention, {HEAD ~ an electrostatic discharge protection structure} with a diac includes one or more reference electrodes, a circuit electrode, a semiconductor material, {TAIL ~ semiconductor regions} and semiconductor wells 
includes
In accordance with one embodiment of the presently claimed invention , { HEAD ~ an electrostatic discharge protection structure } with a diac includes one or more reference electrodes , a circuit electrode , a semiconductor material , { TAIL ~ semiconductor regions } and semiconductor wells
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH REL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH