first connecting means connecting {HEAD ~ the collector} of {TAIL ~ the power} semi conductor internally within the housing to the metal base plate  
of
first connecting means connecting { HEAD ~ the collector } of { TAIL ~ the power } semi conductor internally within the housing to the metal base plate
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH