Abstract: A coil device includes: a drum core having first and second flange portions and a winding core portion therebetween; a coil wound around the core portion; a plate core connected to first and second flange portions first and second flange surfaces at a first direction side; a first electrode terminal on the first flange portion, one coil end portion electrically connected on the first electrode terminal; and a second electrode terminal on the second flange portion, the other coil end portion electrically connected on the second electrode terminal. The plate core has a first and second projecting portions respectively protruding toward the first and second flange surfaces and having first and second flat surfaces facing the first and second flange surfaces. The drum core and the plate core are connected by abutting and bonding the first and second flange surfaces against the first and second flat surfaces.

Abstract: A surface mount inductor including: a core comprising a winding core and a pair of flanges connected to both sides of the winding core; a pair of electrodes formed on at least a part of the outer peripheral surfaces of the pair of flanges; and a wire wound around the winding core in which a pair of wire ends are fixed to the pair of electrodes. In the surface mount inductor, the wire includes a first part wound in contact with an adjacent turn and a second part wound away from an adjacent turn and is connected to the wire end. The second part is distant from a lower edge of a mounting surface side, where the wire end is fixed to the electrode, at an edge of the winding core.

Abstract: A surface mount inductor including: a core comprising a winding core and a pair of flanges connected to both sides of the winding core; a pair of electrodes formed on at least a part of the outer peripheral surfaces of the pair of flanges; and a wire wound around the winding core in which a pair of wire ends are fixed to the pair of electrodes. In the surface mount inductor, the wire includes a first part wound in contact with an adjacent turn and a second part wound away from an adjacent turn and is connected to the wire end, and a gap between the first part and the second part, as viewed from a mounting surface side where the wire end is fixed to the electrode, is 0.5 to 3 times a pitch of the first part.

Abstract: A coil device includes: a drum core having first and second flange portions and a winding core portion therebetween; a coil wound around the core portion; a plate core connected to first and second flange portions first and second flange surfaces at a first direction side; a first electrode terminal on the first flange portion, one coil end portion electrically connected on the first electrode terminal; and a second electrode terminal on the second flange portion, the other coil end portion electrically connected on the second electrode terminal. The plate core has a first and second projecting portions respectively protruding toward the first and second flange surfaces and having first and second flat surfaces facing the first and second flange surfaces. The drum core and the plate core are connected by abutting and bonding the first and second flange surfaces against the first and second flat surfaces.