Patent ID: 11935688
Assignee: TAIYO YUDEN CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A coil component comprising:
a substrate body;
a winding part formed by a conductive wire wound around a part of the substrate body; and
terminal electrodes, each having: a foundation part constituted by a metal plate structure provided on a surface of a part of the substrate body; and a welded part formed on and affixed to a surface of the foundation part wherein a part of the metal plate structure is welded to the conductive wire at its lead part which is led out from the winding part where the lead part of the conductive wire is electrically connected to the terminal electrode, wherein a principal component of the foundation part and a principal component of the welded part are a same element;
wherein, based on a fictive vertical line which passes through a peak point of the welded part where its height measured from its bottom on the surface of the foundation part becomes a highest and which also intersects at right angles the surface of the foundation part, a distance from the fictive vertical line to an outer surface of the welded part as viewed in a direction parallel with the surface of the foundation part is longer at a point on the fictive vertical line closer to the surface of the foundation part when viewed at least in one direction from the vertical line, wherein the closer the point on the fictive vertical line to the surface the longer the distance from the point to the outer surface of the welded part becomes, and
wherein the conductive wire is not exposed at the peak point of the welded part and is devoid of an insulating film and not in contact with the surface of the part of the substrate body in the welded part.