A heat sink is positioned proximate the first housing and {HEAD ~ a second housing} is formed to encapsulate {TAIL ~ at least a portion} of the heat sink 
is formed to encapsulate
A heat sink is positioned proximate the first housing and { HEAD ~ a second housing } is formed to encapsulate { TAIL ~ at least a portion } of the heat sink
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH