Patent ID: 8123529

Claim:
An apparatus to provide electrical connections for an area array device, the apparatus comprising: a plurality of holes disposed within a circuit board, each hole comprising a conductor within the hole and an opening on a side of the circuit board; a plurality of electrically conductive contact posts extending from the openings of at least a portion of the plurality of holes, the plurality of contact posts disposed in a pattern corresponding to contact pads disposed on an area array device; a second plurality of electrically conductive contact posts extending from opposite openings of at least a portion of the plurality of holes, the opposite openings disposed in an opposite side of the circuit board, the second plurality of contact posts disposed in a pattern corresponding to contact pads disposed on a second area array device electrically connecting one or more of the plurality of electrically conductive contact posts to one or more of the second plurality of electrically conductive contact posts extending from different holes of the plurality of holes, the circuit board comprising an interposer between the area array device and the second area array device; a compliant portion of each contact post, the compliant portion inserted within one of the plurality of holes such that the conductor within the hole compresses the compliant portion to removably secure the contact post within the hole and to provide an electrical connection between the contact post and the conductor within the hole; and a spring portion of each contact post extending away from the circuit board, the spring portion compressible toward the circuit board in response to contact with a contact pad of one of the area array device and the second area array device, the spring portion providing an electrical connection between the contact post and the contact pad in response to the contact with the contact pad.