A semiconductor device package is provided which can achieve speeding-up thereof. The semiconductor device package includes: a board which has at least one of a ground plane and a power plane; at least one connecting conductor portion which is formed on an inner wall surface of an opening portion of the board and electrically connected to the corresponding plane; at least one bonding pattern which is formed on a front surface layer portion of the board in the vicinity of an edge of the opening portion, and connected to the corresponding connecting conductor portion; and a second external connection portion which is formed on the side of the front surface layer of the board, and electrically connected to the corresponding plane, respectively, through a through-hole conductor portion formed in the board.