公开(公告)号：US20180061572A1

公开(公告)日：2018-03-01

申请号：US15689393

申请日：2017-08-29

Applicant: TDK CORPORATION

Inventor： Yushi KANO ,  Tsutomu ODASHIMA ,  Makoto MOMOTA ,  Hiroshi SASAKI ,  Masayuki SATO ,  Toshinari TAKAHASHI

IPC: H01G4/12

CPC classification number: H01G4/1227 ,  C04B35/4682 ,  C04B35/6342 ,  C04B35/638 ,  C04B35/64 ,  C04B2235/3206 ,  C04B2235/3208 ,  C04B2235/3215 ,  C04B2235/3225 ,  C04B2235/3239 ,  C04B2235/3241 ,  C04B2235/3418 ,  C04B2235/5409 ,  C04B2235/6025 ,  C04B2235/6562 ,  C04B2235/6567 ,  C04B2235/6582 ,  C04B2235/662 ,  C04B2235/80 ,  C04B2235/85 ,  H01G4/30

Abstract: A dielectric composition contains barium titanate, an oxide of yttrium, and an oxide of magnesium. 0.70≦α/β≦1.10 is satisfied, where a content of the oxide of yttrium is α mol part in terms of Y2O3, and a content of the oxide of magnesium is β mol part in terms of MgO.

公开(公告)号：US20170186547A1

公开(公告)日：2017-06-29

申请号：US15392659

申请日：2016-12-28

Applicant: TDK Corporation

Inventor： Masayuki SATO ,  Yosuke KONNO ,  Shunichi YURI ,  Takashi MORITA ,  Tsutomu ODASHIMA ,  Yushi KANOU ,  Kenta YAMASHITA

IPC: H01G4/30 ,  H01G4/12

CPC classification number: H01G4/30 ,  H01G4/1227 ,  H01G4/232

Abstract: A ceramic electronic component includes an interior part and an exterior part. The interior part includes an interior part dielectric layer and an internal electrode layer. The exterior part includes an exterior part dielectric layer. The exterior part is positioned outside the interior part along a laminating direction thereof. The interior part dielectric layer and the exterior part dielectric layer respectively contain barium titanate as a main component. β−α≧0.20 and α/β≦0.88 are satisfied, where α mol part and β mol part are respectively an amount of a rare earth element contained in the interior and exterior part dielectric layers, provided that an amount of barium titanate contained in the interior and exterior part dielectric layers is respectively 100 mol parts in terms of BaTiO3.