The second level interconnect provided by the contact springs 20 greatly reduces {HEAD ~ failures} by accommodating {TAIL ~ CTE mismatch} and therefore withstanding the temperature cycling 
by accommodating
The second level interconnect provided by the contact springs 20 greatly reduces { HEAD ~ failures } by accommodating { TAIL ~ CTE mismatch } and therefore withstanding the temperature cycling
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH