US 11,842,833 B2
Coil component
Takuya Ishida, Nagaokakyo (JP); and Gota Shinohara, Nagaokakyo (JP)
Assigned to Murata Manufacturing Co., Ltd., Kyoto-fu (JP)
Filed by Murata Manufacturing Co., Ltd., Kyoto-fu (JP)
Filed on Sep. 30, 2020, as Appl. No. 17/039,086.
Application 17/039,086 is a continuation of application No. 16/663,169, filed on Oct. 24, 2019, granted, now 10,796,828, issued on Oct. 6, 2020.
Application 16/663,169 is a continuation of application No. 16/256,685, filed on Jan. 24, 2019, granted, now 10,490,327, issued on Nov. 26, 2019.
Application 16/256,685 is a continuation of application No. 15/828,173, filed on Nov. 30, 2017, granted, now 10,224,133, issued on Mar. 5, 2019.
Claims priority of application No. 2017-083124 (JP), filed on Apr. 19, 2017.
Prior Publication US 2021/0012954 A1, Jan. 14, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. H01F 27/29 (2006.01); H01F 1/153 (2006.01); H01F 41/02 (2006.01); H01F 27/255 (2006.01); H01F 27/28 (2006.01); H01F 17/04 (2006.01); H01F 1/147 (2006.01)
CPC H01F 1/15333 (2013.01) [H01F 1/14766 (2013.01); H01F 1/15308 (2013.01); H01F 17/04 (2013.01); H01F 17/045 (2013.01); H01F 27/255 (2013.01); H01F 27/2852 (2013.01); H01F 27/29 (2013.01); H01F 27/292 (2013.01); H01F 41/02 (2013.01); H01F 41/0246 (2013.01); H01F 2017/048 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A coil component comprising:
a magnetic portion that includes metal particles and a resin material;
a coil conductor embedded in the magnetic portion; and
outer electrodes electrically connected to the coil conductor,
wherein an average particle diameter of the metal particles in the magnetic portion is from 1 to 5 μm, and a CV value of the metal particles is from 50% to 90%,
a protrusion portion of the magnetic portion is located in a core portion of the coil conductor and includes metal particles and a resin material, and
the magnetic portion includes a magnetic base including a base portion and a protrusion portion disposed on an upper surface of a center portion of the base portion, where edge portions of the upper surface of the magnetic base are located at positions higher in the thickness direction than the center portion of the upper surface at which the protrusion portion is located, and
wherein the upper surface slopes upward from the center portion towards the edge portions.