The semiconductor device 15, wherein the spacer is an organic material selected from {HEAD ~ the group} consisting of butyl rubber, EPDM rubber, silicone rubber, and {TAIL ~ fluororubber} 
The semiconductor device 15 , wherein the spacer is an organic material selected from { HEAD ~ the group } consisting of butyl rubber , EPDM rubber , silicone rubber , and { TAIL ~ fluororubber }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL