公开(公告)号：US20230159380A1

公开(公告)日：2023-05-25

申请号：US17977055

申请日：2022-10-31

Applicant: TDK CORPORATION

Inventor： Hidenobu UMEDA ,  Masaki TAKAHASHI ,  Kaori SASAKI ,  Nami ENOMOTO

IPC: C03C14/00 ,  C03C10/00

CPC classification number: C03C14/004 ,  C03C10/0036 ,  C03C2214/04 ,  C03C2214/20 ,  C03C2204/00

Abstract: A glass ceramic includes feldspar crystal phases, non-crystalline glass phases, Al2O3 phases, and SiO2 phases. At least one pair of the Al2O3 phases is bonded via at least one of the feldspar crystal phases.

公开(公告)号：US20220336128A1

公开(公告)日：2022-10-20

申请号：US17760951

申请日：2020-09-25

Applicant: TDK CORPORATION

Inventor： Takashi SUZUKI ,  Yu SAKURAI ,  Hideyuki ITOH ,  Kouichi KAKUDA ,  Ryuichi WADA ,  Nami ENOMOTO ,  Yusuke NAGAI ,  Kunihiko KAWASAKI ,  Shinichi KONDO ,  Yuya ISHIMA

IPC: H01F1/147 ,  C22C30/00 ,  B22F1/05 ,  B22F1/16

Abstract: A soft magnetic metal powder or the like from which a soft magnetic metal fired body can be provided has a high magnetic permeability μ and a specific resistance ρ and is contained in a coil-type electronic component having sufficiently high inductance L and Q value and unlikely to be plating-extended and short-circuited. A soft magnetic metal powder contains soft magnetic metal particles containing at least Fe and Ni. Said soft magnetic metal powder further contains P, Si, Cr and/or M. M is at least one selected from among B, Co, Mn, Ti, Zr, Hf, Nb, Ta, Mo, Mg, Ca, Sr, Ba, Zn, Al, and rare earth elements. The content of each element is within a predetermined range.

公开(公告)号：US20230162910A1

公开(公告)日：2023-05-25

申请号：US17977038

申请日：2022-10-31

Applicant: TDK CORPORATION

Inventor： Hidenobu UMEDA ,  Masaki TAKAHASHI ,  Kaori SASAKI ,  Nami ENOMOTO

IPC: H01F27/32 ,  H01F41/12 ,  H01F41/04 ,  H01F27/28

CPC classification number: H01F27/324 ,  H01F41/125 ,  H01F41/043 ,  H01F27/2804 ,  H01F2027/2809

Abstract: An electronic component includes a glass ceramic layer and a conductor layer. The glass ceramic layer includes feldspar crystal phases, non-crystalline glass phases, and Al2O3 phases. The area ratio of the feldspar crystal phases in the vicinity of the conductor layer is larger than the area ratio of the feldspar crystal phases away from the conductor layer.

公开(公告)号：US20240331907A1

公开(公告)日：2024-10-03

申请号：US18616887

申请日：2024-03-26

Applicant: TDK CORPORATION

Inventor： Hidenobu UMEDA ,  Masaki TAKAHASHI ,  Kaori SASAKI ,  Nami ENOMOTO

IPC: H01F5/06 ,  C03C10/00

CPC classification number: H01F5/06 ,  C03C10/0045

Abstract: An electronic component includes a glass ceramic sintered bod. The glass ceramic sintered body includes a main phase grain including at least one of a cordierite phase and an indialite phase, and a coating layer including a forsterite phase covering the main phase grain.

公开(公告)号：US20220336140A1

公开(公告)日：2022-10-20

申请号：US17717673

申请日：2022-04-11

Applicant: TDK CORPORATION

Inventor： Yu SAKURAI ,  Takashi SUZUKI ,  Hideyuki ITOH ,  Kouichi KAKUDA ,  Ryuichi WADA ,  Nami ENOMOTO ,  Yusuke NAGAI ,  Kunihiko KAWASAKI ,  Shinichi KONDO ,  Yuya ISHIMA

IPC: H01F27/28 ,  H01F1/147 ,  H01F1/20

Abstract: A coil-type electronic component comprises an element including a magnetic element body and a coil conductor. A portion of the magnetic element body in between layers of the coil conductor adjacent to each other in an axis direction of the coil conductor includes first soft magnetic metal particles. A portion of the magnetic element body on an outer side along the axis includes second soft magnetic metal particles. The first soft magnetic metal particles have a saturation magnetization (Ms) higher than that of the second soft magnetic metal particles.