US 12,462,961 B2
Inductor component
Rikiya Sano, Nagaokakyo (JP); and Hiroyuki Kanbara, Nagaokakyo (JP)
Assigned to Murata Manufacturing Co., Ltd., Kyoto-fu (JP)
Filed by Murata Manufacturing Co., Ltd., Kyoto-fu (JP)
Filed on Jan. 11, 2024, as Appl. No. 18/410,014.
Application 18/410,014 is a continuation of application No. 16/843,686, filed on Apr. 8, 2020, granted, now 11,915,849.
Claims priority of application No. 2019-103853 (JP), filed on Jun. 3, 2019.
Prior Publication US 2024/0153690 A1, May 9, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H01F 17/00 (2006.01); H01F 27/28 (2006.01); H01F 27/32 (2006.01); H01F 41/04 (2006.01); H05K 3/12 (2006.01)
CPC H01F 17/0013 (2013.01) [H01F 27/2804 (2013.01); H01F 27/32 (2013.01); H01F 41/041 (2013.01); H05K 3/12 (2013.01); H01F 2017/004 (2013.01); H01F 2027/2809 (2013.01)] 15 Claims
OG exemplary drawing
 
1. An inductor component comprising:
an element body;
a helically wound coil disposed in the element body; and
an external electrode disposed in the element body and electrically connected to the coil, wherein
the element body includes a plurality of insulating layers and a mark layer constituting a portion of an outer surface of the element body, the plurality of insulating layers and the mark layer containing K, and wherein
a K abundance ratio (atom %) in the mark layer is higher than a K abundance ratio (atom %) in the insulating layers,
each of the insulating layers contains an amorphous intra-insulating-layer base material,
the mark layer comprises an amorphous intra-mark-layer base material and an intra-mark-layer crystal, and
the intra-mark-layer crystal comprises a black pigment.