Invention Grant
- Patent Title: Voltage non-linear resistance ceramic composition and voltage non-linear resistance element
- Patent Title (中): 电压非线性电阻陶瓷组成和电压非线性电阻元件
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Application No.: US12076922Application Date: 2008-03-25
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Publication No.: US07683753B2Publication Date: 2010-03-23
- Inventor: Naoyoshi Yoshida , Hitoshi Tanaka , Dai Matsuoka
- Applicant: Naoyoshi Yoshida , Hitoshi Tanaka , Dai Matsuoka
- Applicant Address: JP Tokyo
- Assignee: TDK Corporation
- Current Assignee: TDK Corporation
- Current Assignee Address: JP Tokyo
- Agency: Oliff & Berridge, PLC
- Priority: JP2007-092712 20070330
- Main IPC: H01C7/10
- IPC: H01C7/10
Abstract:
As for the voltage non-linear resistance element layer 2, sintered body (ceramics) having ZnO as main component is used. Said sintered body comprises Pr, Co, Ca and Na are added. Therefore, the ranges are 0.05 to 5.0 atm % of Pr, 0.1 to 20 atm % of Co, 0.01 to 5.0 atm % of Ca and 0.0001 to 0.0008 atm % of Na. When it is within the range, the capacitance changing rate at 85° C. with standard being 25° C. can be made to equal or less than 10%.
Public/Granted literature
- US20080238605A1 Voltage non-linear resistance ceramic composition and voltage non-linear resistance element Public/Granted day:2008-10-02
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