公开(公告)号：US20170178812A1

公开(公告)日：2017-06-22

申请号：US15372905

申请日：2016-12-08

Applicant: Murata Manufacturing Co., Ltd.

Inventor： KOHEI SHIMADA

IPC: H01G4/30 ,  H01G4/232 ,  H01G4/005 ,  H01G4/12

CPC classification number: H01G4/1227 ,  C04B35/4682 ,  C04B35/64 ,  C04B2235/3206 ,  C04B2235/3208 ,  C04B2235/3215 ,  C04B2235/3224 ,  C04B2235/3236 ,  C04B2235/3244 ,  C04B2235/3262 ,  C04B2235/3293 ,  C04B2235/3418 ,  C04B2235/3436 ,  C04B2235/6584 ,  C04B2235/768 ,  C04B2235/79 ,  C04B2235/81 ,  H01G4/005 ,  H01G4/008 ,  H01G4/232 ,  H01G4/248 ,  H01G4/30 ,  H01G4/308

Abstract: A multilayer ceramic capacitor that includes a laminated body having a plurality of ceramic layers including crystal grains that have a perovskite structure, and a plurality of internal electrode layers; and external electrodes on first and second end surfaces of the laminated body and electrically connected to respective sets of the plurality of internal electrodes. In the ceramic layers, when the content of Ti is 100 parts by mol, the ceramic layers contain Ca at 0.10 to 15.00 parts by mol; Mg at 0.0010 to 0.0097 parts by mol; R at 0.50 to 4.00 parts by mol; M at 0.10 to 2.00 parts by mol; and Si at 0.50 to 2.00 parts by mol, and core parts of the crystal grains contain Ca.

公开(公告)号：US20170178808A1

公开(公告)日：2017-06-22

申请号：US15378321

申请日：2016-12-14

Applicant: Murata Manufacturing Co., Ltd.

Inventor： KOHEI SHIMADA ,  Katsuya Ishida

IPC: H01G4/12 ,  C04B35/64 ,  H01G4/248 ,  C04B35/468 ,  H01G4/30 ,  H01G4/008

CPC classification number: H01G4/1227 ,  C04B35/4682 ,  C04B35/64 ,  C04B2235/3206 ,  C04B2235/3208 ,  C04B2235/3215 ,  C04B2235/3224 ,  C04B2235/3236 ,  C04B2235/3244 ,  C04B2235/3262 ,  C04B2235/3293 ,  C04B2235/3418 ,  C04B2235/3436 ,  C04B2235/6584 ,  C04B2235/768 ,  C04B2235/79 ,  C04B2235/81 ,  H01G4/005 ,  H01G4/008 ,  H01G4/232 ,  H01G4/248 ,  H01G4/30 ,  H01G4/308

Abstract: A perovskite ceramic composition that contains Sn, Ba, and Ti, and where the Sn content is within a range of about 0.001 parts by mol≦Sn≦about 0.999 parts by mole with respect to 100 parts by mole of the Ti. The perovskite ceramic composition can be used in a composition that further includes a rare earth element R, Mn, and Si, and optionally Mg, where proportions of the R, the Mn, the Si, and the optional Mg, satisfy R: 0