Tdk Corporation

Keigo Higashida

Hanako Yoshino

Daisuke Urabe

Hiroshi Suzuki

Emi Ito

Kosuke Kunitsuka

Tomokazu Tsuchiya

Takashi Ito

Makoto Yoshino

Yugo Asai

Hidenobu Umeda

Yuma Ishikawa

Tasuku Kawagoe

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.

Circuit substrate

The composite electronic component includes: a substrate having a GND pattern; a coil component having at least three terminals and mounted on a first surface of the substrate; and an overlapping arrangement component mounted on the first surface so that at least a part of the overlapping arrangement component overlaps the coil component when viewed from a first direction perpendicular to the first surface. The substrate has at least three coil connection patterns formed on the first surface and connected to the terminals, at least two component connection patterns formed on the first surface and connected to the overlapping arrangement component, and a GND via connecting one of the component connection patterns and the GND pattern to each other. The GND via is arranged in a substrate outer region, which is outside a region of a hypothetical polygon connecting all of the coil connection patterns on the substrate with a shortest perimeter, when viewed from the first direction.

Composite electronic component

Disclosed herein is a circuit board that includes a substrate and a coil component mounted on the substrate. The coil component includes a core and a wire wound around the core. The substrate includes a dielectric and a capacitive electrode capacitively coupled to the wire through the dielectric and supplied with a ground potential.

Circuit board provided with coil component

Disclosed herein is a common mode filter that includes first and second wires wound in the same direction around the winding core part. The first and second wires have first to third layer winding portions, a first crossing portion positioned between the first and third layer winding portions, and a second crossing portion positioned between the second and third layer winding portions. The vertical positions of the first and second wires are reversed at least partially between the first and third layer winding portions, and the vertical positions of the first and second wires are reversed at least partially between the second and third layer winding portions.

Common mode filter

Disclosed herein is a common mode filter that includes a core having a winding core part and first and second wires wound in a same direction around the winding core part. The first and second wires have a first crossing portion at which first turns thereof counted from one ends thereof cross each other and a second crossing portion at which first turns thereof counted from the other ends thereof cross each other. The first and second wires are wound by layer winding in an aligned state with one of the first and second wires positioned in a lower layer and other one thereof positioned in an upper layer in at least parts of the first and second wires between second turns thereof counted from the one ends thereof and second turns thereof counted from the other ends thereof.

Disclosed herein is a coil component that includes a core having a winding core part, a first flange part positioned at one axial end of the winding core part, and a second flange part positioned at other axial end of the winding core part; a wire wound around the winding core part; a first conductive member overlapping the wire through a dielectric; a first terminal electrode provided on the first flange part and connected to one end of the wire; a second terminal electrode provided on the second flange part and connected to other end of the wire; and a third terminal electrode provided on the first flange part and connected to the first conductive member.

Coil component and circuit board having the same

Disclosed herein is a common mode filter that includes first and second wires wound in the same direction around the winding core part. The first and second wires include first and second layer winding portions each including a plurality of blocks axially alternately arranged. A first block belonging to the first layer winding portion is disposed closest to the first flange part. A second block belonging to the second layer winding portion is disposed closest to the second flange part. The first and second wires cross each other in a region between axially adjacent blocks.

Disclosed herein is a coil component that includes a winding core part and first and second wires wound around the winding core part. The first and second wires constitute at least three winding layers on the winding core part. The same turns of the first and second wires are positioned in mutually different winding layers over a plurality of turns.

Coil component

Disclosed herein is a coil component that includes a winding core part and a wire wound around the winding core part. An i-th turn (i is an integer equal to or larger than 1) to a j-th turn (j is an integer equal to or larger than (i+2)) of the wire are wound in this order around the winding core part in an aligned state. A (j-th+1) turn of the wire is wound around a valley line formed by the i-th turn and a (i-th+1) turn. A (j-th+2) turn of the wire is wound adjacent to the j-th turn around the winding core part.

Disclosed herein is a coil component that includes a winding core part, and first and second wires wound around the winding core part. The first and second wires constitute at least three winding layers on the winding core part. A i-th (i is an integer equal to or larger than 1) turn, a (i+1) turn, and a (i+2) turn of each of the first and second wires are positioned in mutually different winding layers.

An ESD suppressor is configured including first and second discharge electrodes arranged as separated from each other, and a discharge inducing portion kept in contact with the first and second discharge electrodes so as to connect mutually opposed portions of the first and second discharge electrodes to each other. The discharge inducing portion contains metal particles. The first and second discharge electrodes are located on the coil side with respect to the discharge inducing portion when viewed in a stack direction of a plurality of insulator layers. An element body has a cavity portion located so as to cover the whole of the discharge inducing portion when viewed in the stack direction from the coil side. The cavity portion is in contact with the mutually opposed portions of the first and second discharge electrodes and with the discharge inducing portion.

Growing community of inventors

Tsuruoka, Japan

Keigo Higashida