US 12,230,428 B2
Inductor component
Yoshimasa Yoshioka, Nagaokakyo (JP); Ryuichiro Tominaga, Nagaokakyo (JP); and Akinori Hamada, Nagaokakyo (JP)
Assigned to Murata Manufacturing Co., Ltd., Kyoto-fu (JP)
Filed by Murata Manufacturing Co., Ltd., Kyoto-fu (JP)
Filed on May 18, 2022, as Appl. No. 17/747,696.
Application 17/747,696 is a division of application No. 16/040,029, filed on Jul. 19, 2018, granted, now 11,367,552.
Claims priority of application No. 2017-169437 (JP), filed on Sep. 4, 2017.
Prior Publication US 2022/0277878 A1, Sep. 1, 2022
Int. Cl. H01F 5/00 (2006.01); H01F 17/00 (2006.01); H01F 27/28 (2006.01); H01F 27/29 (2006.01); H01F 27/32 (2006.01); H01F 41/063 (2016.01); H01F 3/10 (2006.01); H01F 17/04 (2006.01)
CPC H01F 17/0006 (2013.01) [H01F 27/2804 (2013.01); H01F 27/2823 (2013.01); H01F 27/29 (2013.01); H01F 27/292 (2013.01); H01F 27/32 (2013.01); H01F 27/323 (2013.01); H01F 27/324 (2013.01); H01F 41/063 (2016.01); H01F 2003/106 (2013.01); H01F 2017/0066 (2013.01); H01F 17/04 (2013.01); H01F 2017/048 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An inductor component comprising:
a spiral wiring wound on a plane;
a first magnetic layer and a second magnetic layer located at positions sandwiching the spiral wiring from both sides in a normal direction relative to the plane of the spiral wiring;
a vertical wiring extending from the spiral wiring in the normal direction to penetrate at least the inside of the first magnetic layer out of the first magnetic layer and the second magnetic layer;
an insulating layer that is between the spiral wiring and the second magnetic layer;
a resin layer that is between the first magnetic layer and the second magnetic layer, and a portion of the resin layer is external to an outer perimeter of the spiral wiring; and
an external terminal disposed on at least a surface of the first magnetic layer out of the first magnetic layer and the second magnetic layer to cover an end surface of the vertical wiring, wherein
the first magnetic layer is larger than the second magnetic layer in terms of an area of the external terminal viewed in the normal direction,
a thickness of the first magnetic layer is greater than a thickness of the second magnetic layer, and
the first magnetic layer includes a substantially spherical magnetic powder and the second magnetic layer includes a flattened magnetic powder, and, in the second magnetic layer, a major axis of the flattened magnetic powder is arranged along a direction orthogonal to the normal direction.