Patent ID: 6981881

Claim:
A socket of a semiconductor package comprising a plurality of contacts to be brought into contact with a plurality of solder balls arranged on one side of the semiconductor package and a socket body in which a plurality of mounting holes are provided for mounting the respective contacts, wherein said mounting hole is provided with a through-hole pierced in a height direction of the socket body and a contact support hole, characterized in that: each of said contacts is provided with an upright piece extending through the through-hole, a support piece extending from a proximal end side of the upright piece to be inserted into the support hole, the support hole being laterally offset from the through-hole, and a contact portion formed at a free end portion of the upright piece to be brought into contact with the solder ball; said each contact portion is arranged at a height level such that it projects from the surface of the socket body and a guide projection is provided on the surface of the socket body at a position to face an associated contact portion of each contact; and said contact portion and guide projection are set at an interval such that the solder ball may be brought into contact with both the contact portion and the guide projection.