Disclosed herein is a common mode filter that comprises a drum core including a winding core portion and a pair of flange portions provided at both ends of the winding core portion, and first and second wires wound around the winding core portion so as to form a pair-wire for each turn. The first and second wires includes one or a plurality of sparsely-wound portions in which the first and second wires are wound with adjacent pair-wires spaced from each other, and one or a plurality of closely-wound portions in which the first and second wires are wound with adjacent pair-wires in close contact with each other.

To provide a coil device having high bonding strength and bonding reliability. The coil device 1 has a core member 10 having a winding core and a flange 12, a wire 32 wound around the winding core, and a terminal electrode 52 connected with a lead 32a of a wire 32 provided to the flange 12; and an easy bonding layer 70 is formed on the surface of the terminal electrode 52 connected with the lead 32a in a stripe form 70a. the stripe form each bonding layer 70a is formed as a laser mark 71. In the coil device 1, a residue of coating film 78 which may be generated when the lead 32a of the wire 32 is connected to the mounting part 65 of the terminal electrode 52 is removed by laser.

A detectable label and associated methods of making a detectable label are provided. One example of the detectable label may include a coil and a capacitor arranged in an LC circuit. The flux direction of the LC circuit is generally parallel a package when the detectable label is attached to the package.

The present embodiments relate to an inductor device, a filter device and a steering assist device. The inductor device can comprise: a core including a magnetic material; and a wire which is wound around the core and which includes a low resistance material.

A coil device includes a magnetic core, a first wire and a second wire, and a first terminal electrode and a second terminal electrode. The magnetic core includes a winding core portion and a flange portion. A first end of the first wire is connected to a first wire-joint portion of the first terminal electrode. A first end of the second wire is connected to a second wire-joint portion of the first terminal electrode. A second end of the first wire is connected to a first wire joint portion of the second terminal electrode. A second end of the second wire is connected to a second wire-joint portion of the second terminal electrode. The first wire-joint portion and the second wire-joint portion are arranged away from each other. The first wire-joint portion and the second wire joint portion are arranged away from each other.

A coil component, adopted to be mounted on an electronic device, includes: an element body part; a coil fixed to the element body part and constituted by a wound conductive wire; lead wires that are each extended from the conductive wire and led out from the coil, and whose tip parts are each disposed a bottom face, which is a mounting face, of the element body part; and terminal parts that are each constituted by the tip part and a metal member that is joined to the tip part on the bottom face, and also has an opening at a position overlapping the tip part in a direction intersecting the bottom face.

Disclosed herein is a circuit substrate that includes a coil component mounted on the substrate having first and second land patterns and first and second dummy land patterns. The coil component includes a first signal terminal and a first dummy terminal which are provided on the first flange part, a second signal terminal and a second dummy terminal which are provided on the second flange part, and a wire wound around the winding core part and whose one end and other end are connected respectively to the first signal terminal and the second signal terminal. The coil component is mounted on the substrate such that the first and second signal terminals are connected respectively to the first and second land patterns and that the first and second dummy patterns are connected respectively to the first and second dummy land patterns.

Disclosed herein is a coil component that includes a drum core; a terminal fitting fixed respectively to the flange part of the drum core; and a wire wound around the winding core part of the drum core. The terminal fitting has a wire connecting part to which the wire is connected and a mounting part having springiness with respect to the drum core. The distance between the flange part and the mounting part is larger than the distance between the flange part and the wire connecting part.

An object of the present invention is to provide a coil component in which leakage of magnetic flux from a magnetic gap is reduced. A coil component includes: a drum-shaped core 20 having a winding core part 30 with a gap G formed therein and first and second flange parts 31 and 32; a plate-like core 40 fixed to the first and second flange parts 31 and 32; and wires W1 to W3 wound around the winding core part 30 and each having one end connected to a terminal electrode provided on the first flange part 31 and the other end connected to a terminal electrode provided on the second flange part 32. According to the present invention, the gap G formed in the winding core part 30 functions as a magnetic gap, and magnetic flux leaking from the magnetic gap is shielded by the plate-like core 40. Thus, even when the magnetic gap is provided to reduce a tolerance due to characteristic variation of a magnetic material, it is possible to solve the problem that other electronic components are affected by the leakage magnetic flux.

A coil device includes a core and a coil portion. The core includes a winding core part and a flange part disposed at one end of the winding core part in an axial direction thereof. The coil portion is formed by winding a first wire and a second wire around the winding core part. The flange part includes first and second grooves passed by a leading part of the first wire or the second wire. The first groove extends toward an outside of the flange part. The second groove extends toward the outside of the flange part at an angle differing from that of the first groove.