Socket

A mounting device comprising:

• a board;
• and
• a socket surface-mounted to the board, wherein the socket includes:
• a plurality of contacts configured from a conductive material, each one of the plurality of contacts including a contact portion having a distal end portion that can contact a terminal of a semiconductor device, a locking portion connected to the contact portion, and a board-side contact portion that extends from the locking portion and can contact a conductive region formed on a board surface;
• a holding member that holds the locking portion of the plurality of contacts;
• and
• a guide member that is disposed so as to oppose the holding member and is formed with a plurality of through holes into which the board-side contact portion of the plurality of contacts, which protrudes from the holding member, is inserted;
• wherein the contact portion further includes a protruding portion spaced from the distal end portion and extending from a surface of the contact portion in an axial direction for engaging an opening of the holding member, the opening of the holding member comprising a first portion and a second portion extending from the first portion in an orthogonal direction, and wherein the protruding portion of the contact portion is configured to engage the second portion of the opening;
• and
• wherein the guide member can move in a direction heading toward or away from the holding member.