The invention relates to a terminal structure of an electronic component, such as a tuner, in which a printed circuit board 1 on which electronic components including a pin header 2 having a plurality of pin terminals, and a case frame 3 housing the printed circuit board and having a notch opening exposing the pin terminals are provided. A guide hole 23 that penetrates from the upper surface of the pin header 2 to its lower surface in contact with the printed circuit board, and a guide axis 33—insertable into the guide hole 23—provided in a press portion 32 are provided, such that the pin header is held between the press portion 32 provided in the case frame 3 and the printed circuit board, enabling the pin header, even a slim, compact one, having a plurality of pin terminals to be fixed accurately to a predetermined position on the board with a predetermined posture.