Patent ID: 7477062

Claim:
An LSI test socket for BGA, comprising: a printed board containing decoupling capacitors in which a first power plate connected to an inner surface of a first through hole and a second power plate connected to an inner surface of a second through hole are laminated through a separator; a pogo-pin supporting casing portion on which the printed board is overlapped into a single piece, and in which first and second casing holes are each opened at positions corresponding to said first and second through holes; and pogo-pins inserted into penetrating holes in which hole positions of said first and second through holes drilled in said printed board, and said first and second casing holes are allowed to be matched, wherein one end of said pogo-pin supporting casing portion faces a BGA package, said printed board being disposed at the other end thereof at the time of testing LSI incorporated in the BGA package.