WIRING BOARD AND WIRING BOARD MANUFACTURING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a wiring board in which electrical reliability when a plurality of electronic components are arranged inside one through hole is improved; and provide a manufacturing method of the wiring board.SOLUTION: A wiring board comprises: a core layer in which a through hole is formed and which has projections projecting from an inner wall of the through hole to the inside of the through hole in planar view; a plurality of electronic components which are stored inside the through hole in a state of being separated from each other and next to each other, with side parts in an arrangement direction are engaged with the projections; and a resin layer which is filled inside the through hole and holds at least lateral faces of the electronic components.