Patent ID: 6853209

Claim:
A contactor assembly for use in testing electrical circuits, the contactor assembly comprising: an electrical contactor including a contactor substrate and a plurality of electrical terminals on the contactor substrate; an interposer including an interposer substrate having first and second sides, a plurality of first terminals on the first side, a plurality of second terminals on the second side, a plurality of first and second resilient interconnection elements extending respectively from the first and second side terminals of the interposer substrate, wherein the interposer is positioned in a predetermined position relative to the electrical contactor in which predetermined position each first resilient interconnection element makes electrical contact with an electrical terminal of the electrical contactor, the interposer substrate having been moved relatively towards the contactor substrate to differentially compress the first resilient interconnection elements in relation to the second resilient interconnection elements; and an alignment-locking component having a first portion secured to the electrical contactor and a second portion in contact with the interposer to align the interposer in a predetermined position relative to the electrical contactor and lock by countering a force generated by the first resilient interconnection elements.