JPS6444005A - Voltage-dependent nonlinear resistor - Google Patents

Voltage-dependent nonlinear resistor

Info

Publication number
JPS6444005A
JPS6444005A JP62202106A JP20210687A JPS6444005A JP S6444005 A JPS6444005 A JP S6444005A JP 62202106 A JP62202106 A JP 62202106A JP 20210687 A JP20210687 A JP 20210687A JP S6444005 A JPS6444005 A JP S6444005A
Authority
JP
Japan
Prior art keywords
bismuth
sintered material
grain boundary
boundary segregation
segregation part
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP62202106A
Other languages
Japanese (ja)
Other versions
JP2510961B2 (en
Inventor
Takeshi Suzuki
Kiyoshi Matsuda
Yukiteru Kikuchi
Takamichi Momoki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Marcon Electronics Co Ltd
Original Assignee
Marcon Electronics Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Marcon Electronics Co Ltd filed Critical Marcon Electronics Co Ltd
Priority to JP62202106A priority Critical patent/JP2510961B2/en
Publication of JPS6444005A publication Critical patent/JPS6444005A/en
Application granted granted Critical
Publication of JP2510961B2 publication Critical patent/JP2510961B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
    • H01C7/10—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material voltage responsive, i.e. varistors
    • H01C7/105—Varistor cores
    • H01C7/108—Metal oxide
    • H01C7/112—ZnO type

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Thermistors And Varistors (AREA)

Abstract

PURPOSE:To obtain a varistor which assures excellent nonlinearity, least aging characteristic and high stability by reducing phase change by heat of Bi2O3 phase forming a grain boundary segregation part through creation of bismuth compound which is stable against heat in the grain boundary segregation part of crystal grain which is mainly composed of zinc oxide forming a sintered material. CONSTITUTION:A kind of calcium, barium and strontium is included as a metallic additive to the raw material including zinc oxide and magnesium oxide as main elements and bismuth and tantalum as sub-elements. A pyrochlore type compound combining bismuth of 50% among a total amount in the sintered material is included in the grain boundary segregation part of crystal grain in the sintered material including bismuth of 0.05-1.0mol% in terms of Bi2O3 with the relationship between the metallic additive and bismuth and between tantalum and bismuth in the range of Me/Bi=0.05-0.5, Ta/Bi=0.2-2.0. According to the varistor of such constitution, it may be formed as the thermally stable substance, the V-I characteristic is less lowered in the low current region and excellent nonlinear characteristics can be obtained.
JP62202106A 1987-08-12 1987-08-12 Voltage nonlinear resistor Expired - Fee Related JP2510961B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62202106A JP2510961B2 (en) 1987-08-12 1987-08-12 Voltage nonlinear resistor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62202106A JP2510961B2 (en) 1987-08-12 1987-08-12 Voltage nonlinear resistor

Publications (2)

Publication Number Publication Date
JPS6444005A true JPS6444005A (en) 1989-02-16
JP2510961B2 JP2510961B2 (en) 1996-06-26

Family

ID=16452063

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62202106A Expired - Fee Related JP2510961B2 (en) 1987-08-12 1987-08-12 Voltage nonlinear resistor

Country Status (1)

Country Link
JP (1) JP2510961B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5267088A (en) * 1989-11-10 1993-11-30 Asahi Kogaku Kogyo Kabushiki Kaisha Code plate mounting device
JP2009185454A (en) * 2008-02-04 2009-08-20 Hanex Co Ltd Separating device
JP2009185455A (en) * 2008-02-04 2009-08-20 Hanex Co Ltd Separating device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5267088A (en) * 1989-11-10 1993-11-30 Asahi Kogaku Kogyo Kabushiki Kaisha Code plate mounting device
JP2009185454A (en) * 2008-02-04 2009-08-20 Hanex Co Ltd Separating device
JP2009185455A (en) * 2008-02-04 2009-08-20 Hanex Co Ltd Separating device

Also Published As

Publication number Publication date
JP2510961B2 (en) 1996-06-26

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