Wire-wound coil element
AssigneeTaiyo Yuden Co., Ltd.
InventorsHidenori Aoki, Tomoo Kashiwa
Life of this patent
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Abstract
A coil element according to one embodiment of the present invention has a rectangular parallelepiped shape and has a principal surface including long sides and short sides. The coil element includes a drum core, a winding wound around the drum core, a first external electrode, a second external, and a covering portion covering at least a part of the winding core. The drum core in the embodiment includes a first flange, a second flange, and a winding core connecting between the first flange and the second flange. The winding core extends along the short sides of the principal surface. In one embodiment, the coil element has a height less than 0.85 mm.
Claims20
A coil element having a rectangular parallelepiped shape and having a principal surface including long sides and short sides, the coil element comprising:
- a drum core including a first flange, a second flange, and a winding core connecting between the first flange and the second flange;
- a first winding wound around the winding core;
- a first external electrode electrically connected to one end of the first winding;
- a second external electrode electrically connected to the other end of the first winding;
- and
- a covering portion covering at least a part of the winding core,
- wherein the winding core extends along the short sides of the principal surface;
- wherein the coil element has a height less than 0.85 mm, the height being a dimension of the first flange of the coil element in a direction perpendicular to the principal surface;
- wherein the coil element has a width, the width being a dimension of the coil element in the direction parallel to the short sides of the principal surface and parallel to a central axis of the winding core, and the central axis of the winding core extends along the short sides of the principal surface;
- wherein the first flange is provided at one end of the winding core in the direction parallel to the short sides of the principal surface and parallel to the central axis of the winding core, and the second flange is provided at another end of the winding core in the direction parallel to the short sides of the principal surface and parallel to the central axis of the winding core;
- and
- wherein the width in the direction parallel to the short sides of the principal surface is greater than the height.
A coupling coil element having a rectangular parallelepiped shape and having a principal surface including long sides and short sides, the coupling coil element comprising:
- a drum core including a first flange, a second flange, and a winding core connecting between the first flange and the second flange;
- a first winding wound around the winding core;
- a second winding wound around the winding core;
- a first external electrode electrically connected to one end of the first winding;
- and
- a second external electrode electrically connected to the other end of the first winding,
- a third external electrode electrically connected to one end of the second winding;
- a fourth external electrode electrically connected to the other end of the second winding;
- and
- a covering portion covering at least a part of the winding core,
- wherein the winding core extends along the short sides of the principal surface;
- wherein the coil element has a height less than 0.85 mm, the height being a dimension of the first flange of the coil element in a direction perpendicular to the principal surface;
- and
- wherein the coil element has a width, the width being a dimension of the coil element in the direction parallel to the short sides of the principal surface and parallel to a central axis of the winding core, and the central axis of the winding core extends along the short sides of the principal surface,
- wherein the first flange is provided at one end of the winding core in the direction parallel to the short sides of the principal surface and parallel to the central axis of the winding core, and the second flange is provided at another end of the winding core in the direction parallel to the short sides of the principal surface and parallel to the central axis of the winding core;
- and
- wherein the width in the direction parallel to the short sides of the principal surface is greater than the height.
Dependencies are inferred from the claim text.