Invention Grant
- Patent Title: Laminated ceramic capacitor
- Patent Title (中): 层压陶瓷电容器
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Application No.: US12989406Application Date: 2009-04-24
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Publication No.: US08383535B2Publication Date: 2013-02-26
- Inventor: Katsuyoshi Yamaguchi
- Applicant: Katsuyoshi Yamaguchi
- Applicant Address: JP Kyoto
- Assignee: Kyocera Corporation
- Current Assignee: Kyocera Corporation
- Current Assignee Address: JP Kyoto
- Agency: Birch Stewart Kolasch Birch, LLP
- Priority: JP2008-113493 20080424; JP2008-148512 20080605
- International Application: PCT/JP2009/058194 WO 20090424
- International Announcement: WO2009/131221 WO 20091029
- Main IPC: H01G4/018
- IPC: H01G4/018 ; C04B35/468

Abstract:
A laminated ceramic capacitor includes a capacitor body of alternately stacked dielectric layers and internal electrode layers, and an external electrode provided on the end face of the capacitor body on which the internal electrode layer is exposed. The dielectric layer has a crystal phase composed mainly of barium titanate and having a cubic system crystal structure. The grain diameter of crystal grains constituting the crystal phase is 0.05 to 0.2 pm. The dielectric layer is formed of a ceramic containing, per mole of barium, 0.0014 to 0.03 moles yttrium, 0.0002 to 0.045 moles manganese, 0.0075 to 0.04 moles magnesium and 0.025 to 0.18 moles ytterbium. The dielectric bonding material is formed of a ceramic containing the same components as those of the main crystal phase of the dielectric ceramic constituting the dielectric layer.
Public/Granted literature
- US20110075321A1 LAMINATED CERAMIC CAPACITOR Public/Granted day:2011-03-31
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