Coil device

A coil device comprising;

• a winding coil including Cu and having a winding part and first and second extension line parts extending from the winding part,
• a pair of electrodes made of a conductive material, each of the pair of electrodes having (1) a connecting wire part having a connecting wire face connected with one of the first and second extension line parts and a protective face sandwiching the one of the first and second extension line parts with the connecting wire face and (2) a base part provided with a mounting base face at one of the faces of the base part and connected to the connecting wire part, and
• a magnetic part including a magnetic material and covering all of the winding part, the first and second extension line parts and the connecting wire part of the pair of electrodes, wherein:
• the mounting base face is exposed to an exterior of the coil device,
• the connecting wire part comprises a bending part,
• the connecting wire face is connected to the base part via the bending part,
• the connecting wire face is approximately parallel with the mounting base face, and
• the connecting wire face is facing an opposite direction from the mounting base face.