公开(公告)号：US20240177936A1

公开(公告)日：2024-05-30

申请号：US18498794

申请日：2023-10-31

Applicant: TDK CORPORATION

Inventor： Taku MURAKAMI ,  Nobuto MORIGASAKI ,  Takuma ARIIZUMI ,  Yoshitaka NAGASHIMA ,  Tsubasa AOKI

IPC: H01G4/30 ,  H01G4/008 ,  H01G4/012 ,  H01G4/12

CPC classification number: H01G4/30 ,  H01G4/008 ,  H01G4/012 ,  H01G4/1227

Abstract: A multilayer electronic device includes an element body including an interior region and an exterior region and a pair of external electrodes. The interior region includes inner dielectric layers and internal electrode layers laminated alternately. The exterior region is disposed outwards from the interior region in a lamination direction. The pair of external electrodes is disposed on a surface of the element body and connected to the internal electrode layers. DRAa DRBb>DRBc are satisfied, where “RA” includes an element having a highest mole ratio among “RE” in the inner dielectric layers of a third region at a center of the interior region in the lamination direction, “RB” includes an element having a highest mole ratio among “RE” in a first region at a center of the exterior region in the lamination direction, and “RA” and “RB” are different from each other.