US 12,476,041 B2
Inductor component and mounting structure of inductor component
Yoshimasa Yoshioka, Nagaokakyo (JP); Kouji Yamauchi, Nagaokakyo (JP); and Katsufumi Sasaki, Nagaokakyo (JP)
Assigned to Murata Manufacturing Co., Ltd., Kyoto-fu (JP)
Filed by Murata Manufacturing Co., Ltd., Kyoto-fu (JP)
Filed on Jul. 11, 2022, as Appl. No. 17/811,825.
Claims priority of application No. 2021-115688 (JP), filed on Jul. 13, 2021.
Prior Publication US 2023/0014349 A1, Jan. 19, 2023
Int. Cl. H01F 27/29 (2006.01); H01F 27/28 (2006.01); H01F 37/00 (2006.01)
CPC H01F 27/292 (2013.01) [H01F 27/2828 (2013.01); H01F 37/005 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An inductor component comprising:
an element body having a length, a width, and a height;
a coil on the element body, having a spiral shape and wound along an axis; and
a first external electrode and a second external electrode on the element body and electrically connected to the coil, wherein
the element body includes a substrate having a first main surface and a second main surface opposite to each other,
the axis of the coil is disposed in parallel to a direction of a shorter dimension among the length, the width, and the height of the element body,
the coil includes
a plurality of first coil wirings on the first main surface,
a plurality of second coil wirings on the second main surface,
a plurality of first through wirings which penetrate the substrate from the first main surface to the second main surface and arranged along the axis, and
a plurality of second through wirings which penetrate the substrate from the first main surface to the second main surface, are disposed on an opposite side of the first through wirings with respect to the axis, and are arranged along the axis,
the first coil wirings, the first through wirings, the second coil wirings, and the second through wirings are connected in this order to constitute at least a part of the spiral shape,
two of the first through wirings adjacent to each other in a direction of the axis on the first main surface satisfy the relationship r1/g1≤4, where r1 is a radius of an equivalent circle diameter of an end surface of each of the first through wirings and g1 is a minimum distance between end surfaces of the two first through wirings, and
two of the second through wirings adjacent to each other in the direction of the axis on the first main surface satisfy the relationship r2/g2≤4, where r2 is a radius of an equivalent circle diameter of an end surface of each of the second through wirings and g2 is a minimum distance between end surfaces of the two second through wirings, and
wherein at least one of:
a length of the first through wiring in an extending direction is equal to or more than five times the equivalent circle diameter of an end surface of the first through wiring on the first main surface, or
a length of the second through wiring in the extending direction is equal to or more than five times the equivalent circle diameter of an end surface of the second through wiring on the first main surface.