{TAIL ~ A surface} on the other side of the wiring board is a heat radiating surface which is thermally connected to the device forming surface and operative to radiate {HEAD ~ heat} generated at the device forming surface to the exterior 
{ TAIL ~ A surface } on the other side of the wiring board is a heat radiating surface which is thermally connected to the device forming surface and operative to radiate { HEAD ~ heat } generated at the device forming surface to the exterior
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 OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH