Abstract: A contact pin comprises a plunger contacting an electric part, a bottom contact portion electrically connected to a printed circuit board, and a spring urging the plunger and the bottom contact portion so as to separate from each other, in which at least one of the plunger and the bottom contact portion is formed by press-working a plate member. The bottom contact portion is provided with a connection portion to which the plunger is connected.

Abstract: A socket for electrical parts, which detachably holds an electrical part such as an IC package on a mounting portion thereof and connects the electrical part electrically to external circuit, capable of improving the heat dissipation capability of a heat sink which dissipates the heat generated from the electrical part, in a state of being in contact with the electrical part mounted on the mounting portion, and also capable of preventing damage to the electrical part.

Abstract: A contact pin comprises a plunger contacting an electric part, a bottom contact portion electrically connected to a printed circuit board, and a spring urging the plunger and the bottom contact portion so as to separate from each other, in which at least one of the plunger and the bottom contact portion is formed by press-working a plate member. The bottom contact portion is provided with a connection portion to which the plunger is connected.

Abstract: A socket for electrical parts, which detachably holds an electrical part such as an IC package on a mounting portion thereof and connects the electrical part electrically to an external circuit, capable of improving the heat dissipation capability of a heat sink which dissipates the heat generated from the electrical part, in a state of being in contact with the electrical part mounted on the mounting portion, and also capable of preventing damage to the electrical part.

Abstract: In a socket for an electrical part, the electrical part is mounted on one surface of a socket body of the socket and a plurality of electrical conductive members are disposed to the socket body and are in contact with terminals of the electrical part mounted on the one surface so as to electrically be conducted therewith, respectively. A press member for pressing the electrical part is mounted to the socket body to be supported by a pivotally and movably support device disposed to the socket body to an open position located away from an upper side of the one surface of the socket body. The pivotally and movably support device makes the press member, which is positioned to the open position, pivot to a close position located in the upper side of the one surface thereof. The pivotally and movably support means makes the press member pivoted to the close position move on a parallel to a vertical direction toward the electrical part on the one surface of the socket body so as to press the electrical part thereto.