公开(公告)号：US20230386748A1

公开(公告)日：2023-11-30

申请号：US18324344

申请日：2023-05-26

Applicant: TDK CORPORATION

Inventor： Toshihiro IGUCHI ,  Shinya SAITO ,  Ayako SATO ,  Yasuo WATANABE ,  Takehisa TAMURA ,  Kenya TAMAKI

IPC: H01G4/232 ,  H01G4/30

CPC classification number: H01G4/2325 ,  H01G4/30

Abstract: A multilayer ceramic electronic device includes an element body including a ceramic layer and an internal electrode layer, and an external electrode formed on an outer surface of the element body and electrically connected to part of the internal electrode layer. The external electrode includes a first layer in direct contact with the element body and containing a first insulator phase and first metal phases, and a second layer in contact with an outer surface of the first layer and containing a second insulator phase and second metal phases. An area ratio of the first metal phases in the first layer is more than 8% and 30% or less. An area ratio of the second metal phases in the second layer is larger than the area ratio of the first metal phases in the first layer. The first metal phases have an average aspect ratio of 3.5 or more.

公开(公告)号：US20210375553A1

公开(公告)日：2021-12-02

申请号：US17228822

申请日：2021-04-13

Applicant: TDK CORPORATION

Inventor： Akihiro MASUDA ,  Shinya ITO ,  Norihisa ANDO ,  Kosuke YAZAWA ,  Yoshiki SATOU ,  Katsumi KOBAYASHI ,  Toshihiro IGUCHI ,  Kenya TAMAKI ,  Shinya SAITO

IPC: H01G4/40 ,  H01G4/228 ,  H01G4/224 ,  H01G4/38 ,  H01F27/28

Abstract: An electronic device includes first and second capacitors, a case, a coil, and first to fourth conductive terminals. The first capacitor includes first and second terminal electrodes. The second capacitor includes third and fourth terminal electrodes. The case includes an accommodation recess for accommodating the first and second capacitors. The coil is separated from the first and second capacitors by a part of the case and disposed outside the accommodation recess. The first terminal is connected to the first electrode and partly disposed on a mounting-side bottom surface of the case. The second terminal is connected to one end of the coil and the second electrode and partly disposed on the surface. The third terminal is connected to the other end of the coil and the third electrode and partly disposed on the surface. The fourth terminal is connected to the fourth electrode and partly disposed on the surface.

公开(公告)号：US20240112863A1

公开(公告)日：2024-04-04

申请号：US18468502

申请日：2023-09-15

Applicant: TDK CORPORATION

Inventor： Atsushi WATANABE ,  Yasuhiro OKUI ,  Yoshitaka NAGASHIMA ,  Shinya SAITO ,  Yasuo WATANABE

IPC: H01G4/012 ,  H01G4/232 ,  H01G4/30

CPC classification number: H01G4/012 ,  H01G4/2325 ,  H01G4/30

Abstract: An electronic component includes: a first internal electrode provided in an element body; a second internal electrode provided in the element body; a third internal electrode provided in the element body and drawn out to a first side surface; and a fourth internal electrode provided in the element body and drawn out to a second side surface. The third internal electrode and the fourth internal electrode are electrically connected to each other through an external connection conductor formed on at least the first side surface and the second side surface. In a first direction, the first internal electrode faces the third internal electrode without facing the second internal electrode and the fourth internal electrode. In the first direction, the second internal electrode faces the fourth internal electrode without facing the first internal electrode and the third internal electrode.

公开(公告)号：US20240112860A1

公开(公告)日：2024-04-04

申请号：US18465613

申请日：2023-09-12

Applicant: TDK CORPORATION

Inventor： Naoki HAYAKAWA ,  Yoshitaka NAGASHIMA ,  Yasuhiro OKUI ,  Shinya SAITO ,  Yasuo WATANABE

IPC: H01G4/005 ,  H01G4/232 ,  H01G4/30

CPC classification number: H01G4/005 ,  H01G4/232 ,  H01G4/30

Abstract: An electronic component includes: a first internal electrode which is provided inside an element body and is drawn on a first main surface corresponding to a mounting surface; a second internal electrode which is provided inside the element body, is provided at a position different from the first internal electrode when viewed from a third direction, and is drawn on the first main surface; a third internal electrode which is provided inside the element body, is provided at a position facing the first internal electrode and the second internal electrode in the third direction, and is drawn on the first main surface; wherein the first internal electrode and the third internal electrode face each other in the third direction to form a first capacitor portion, and wherein the second internal electrode and the third internal electrode face each other in the third direction to form a second capacitor portion.

公开(公告)号：US20210375547A1

公开(公告)日：2021-12-02

申请号：US17229393

申请日：2021-04-13

Applicant: TDK CORPORATION

Inventor： Shinya SAITO ,  Kenya TAMAKI ,  Norihisa ANDO ,  Shinya ITO ,  Akihiro MASUDA ,  Kosuke YAZAWA ,  Yoshiki SATOU ,  Katsumi KOBAYASHI ,  Toshihiro IGUCHI

IPC: H01G4/224 ,  H01G4/232 ,  H01G4/38 ,  H01H85/175 ,  H01H85/08 ,  H01G2/06

Abstract: An electronic device includes chip components, a case, conductive terminals, and a fuse. The chip components each include a terminal electrode. The case includes accommodation recesses for accommodating the chip components. The conductive terminals are fixed to the case and respectively connected to the terminal electrodes of the chip components. The fuse electrically connects the chip components.