A riser may be used to provide {HEAD ~ the spacing} between {TAIL ~ the cover} and the taped lead frame assembly, so that the cover does not contact the taped lead frame assembly 
between
A riser may be used to provide { HEAD ~ the spacing } between { TAIL ~ the cover } and the taped lead frame assembly , so that the cover does not contact the taped lead frame assembly
OTH OTH OTH 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 OTH OTH OTH OTH OTH OTH OTH