Coil device

A coil device comprising:

• a winding core (i) wound by a wire, (ii) having a winding core axis that is a longitudinal axis of a winding of the wire on the winding core and (iii) having a first end surface at an end of the winding core along the winding core axis;
• a flange having (i) an inner end surface connected to the first end surface, (ii) an outer end surface spaced from and opposite to the inner end surface, (iii) a lateral exterior surface connecting the inner end surface and the outer end surface, and (iv) a mounting surface configured to face to a mounting board and arranged perpendicular to the inner end surface, the outer end surface and the lateral exterior surface;
• and
• a terminal fitting attached to the flange, wherein:
• the terminal fitting includes:
• an engagement part having (i) a first portion in contact with the inner end surface, (ii) a second portion in contact with the outer end surface, and (iii) a third portion in contact with the lateral exterior surface, and
• a protrusion plate part connected to the engagement part;
• the third portion extends between and connects the first portion and the second portion;
• the engagement part and the flange are configured such that the first portion and the second portion apply a clamping force on the inner end surface and the outer end surface to affix the engagement part to the flange;
• the protrusion plate part includes (i) a mounting part extending along the mounting surface and configured to be connected to the mounting board and (ii) a connection part extending along the lateral exterior surface between the mounting part and the engagement part;
• and
• the mounting part is connected to a lead end of the wire.