Coil device

A coil device comprising a first wire, a second wire, and a drum core having a winding core part where the first wire and the second wire are wrapped around;

• wherein
• the drum core has a first flange at one end along a first axis of the winding core part and a second flange at the other end along the first axis of the winding core part;
• the first flange has a first terminal and a second terminal connecting to the first wire;
• the second flange has a third terminal and a fourth terminal connecting to the second wire;
• the first wire has a first coil part wound around the winding core part by pressing a back of the first coil part towards the winding core part;
• the first coil part has a first winding width W1 defined by components along the first axis which is a distance between a first outer winding wire portion positioned closest to the first flange and a first inner winding wire portion positioned furthest from the first flange;
• the second wire comprises a second coil part wound around the winding core part by pressing a back of the second coil part towards the winding core part;
• the second coil part has a second winding width W2 defined by components along the first axis which is a distance between a second outer winding wire portion positioned closest to the second flange and a second inner winding wire portion positioned furthest from the second flange;
• the first coil part is arranged at a position closer to the first flange and spaced apart from the second coil part by a distance W3 defined by components along the first axis between the first inner winding wire portion and the second inner winding wire portion;
• W3>W1 and W3>W2 are satisfied;
• and
• the first wire and the second wire are different wires.