GB1346851A - Varistors - Google Patents

Varistors

Info

Publication number
GB1346851A
GB1346851A GB1637571A GB1346851DA GB1346851A GB 1346851 A GB1346851 A GB 1346851A GB 1637571 A GB1637571 A GB 1637571A GB 1346851D A GB1346851D A GB 1346851DA GB 1346851 A GB1346851 A GB 1346851A
Authority
GB
United Kingdom
Prior art keywords
zno
glass
mixture
glass frit
borosilicate
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.)
Expired
Application number
GB1637571A
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Publication of GB1346851A publication Critical patent/GB1346851A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C17/00—Apparatus or processes specially adapted for manufacturing resistors
    • H01C17/06—Apparatus or processes specially adapted for manufacturing resistors adapted for coating resistive material on a base
    • H01C17/065—Apparatus or processes specially adapted for manufacturing resistors adapted for coating resistive material on a base by thick film techniques, e.g. serigraphy
    • H01C17/06506—Precursor compositions therefor, e.g. pastes, inks, glass frits
    • H01C17/06513—Precursor compositions therefor, e.g. pastes, inks, glass frits characterised by the resistive component
    • H01C17/06533—Precursor compositions therefor, e.g. pastes, inks, glass frits characterised by the resistive component composed of oxides
    • H01C17/06546—Oxides of zinc or cadmium
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49082—Resistor making
    • Y10T29/49099—Coating resistive material on a base

Abstract

1346851 Glass-metal and metal oxide mixtures MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 21 May 1971 16375/71 Heading C1M [Also in Division H1] A varistor is manufactured by applying to a support 1, e.g. of alumina, a mixture 2 of finely divided ZnO and glass frit and firing the mixture to drive off any liquid vehicle present and to melt the glass frit so as to form a solid layer of ZnO in a glass binder. Electrodes 3a, 3b are provided, either both on top of the layer 2 as shown or with one electrode deposited directly on to the support 1 before application of the ZnO/glass frit mixture. Ag, Pt, Ti, Ni, Au, Al, Cu or Zn are mentioned as suitable electrode materials, but the preferred electrodes are applied as silver paint in a glass frit, the preferred glass being specified. Suitable glasses for the frit mixed with ZnO for the layer 2 are borosilicate, lead borosilicate, bismuth borosilicate or zinc lead borate, preferred compositions being specified. The ZnO, which is present as 30-95% by weight of the mixture, may include as an additive from 0À1 to 8 mol. per cent of Bi 2 O 3 , PbO or BaO.
GB1637571A 1971-05-21 1971-05-21 Varistors Expired GB1346851A (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB1637571 1971-05-21
US14662471A 1971-05-25 1971-05-25
FR717119069A FR2138453B1 (en) 1971-05-21 1971-05-26
NL717107731A NL150936B (en) 1971-05-21 1971-06-04 METHOD OF MANUFACTURING A VARISTOR OF THE THICK-FILM TYPE.

Publications (1)

Publication Number Publication Date
GB1346851A true GB1346851A (en) 1974-02-13

Family

ID=27446109

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1637571A Expired GB1346851A (en) 1971-05-21 1971-05-21 Varistors

Country Status (4)

Country Link
US (1) US3725836A (en)
FR (1) FR2138453B1 (en)
GB (1) GB1346851A (en)
NL (1) NL150936B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2835562A1 (en) * 1977-08-18 1979-03-01 Trw Inc MATERIAL FOR A GLASS LIKE ELECTRICAL RESISTANCE AND METHOD FOR MANUFACTURING IT
EP0065779A2 (en) * 1981-05-25 1982-12-01 Ngk Insulators, Ltd. Heating element
US5742223A (en) 1995-12-07 1998-04-21 Raychem Corporation Laminar non-linear device with magnetically aligned particles

Families Citing this family (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5039998A (en) * 1973-08-14 1975-04-12
IE42714B1 (en) * 1975-06-23 1980-10-08 Gen Electric Improvements in varistors
US4041436A (en) * 1975-10-24 1977-08-09 Allen-Bradley Company Cermet varistors
US4064475A (en) * 1976-07-12 1977-12-20 Allen-Bradley Company Thick film varistor and method of making the same
US4069465A (en) * 1976-07-12 1978-01-17 Allen-Bradley Company Cylindrical varistor and method of making the same
US4103274A (en) * 1976-09-13 1978-07-25 General Electric Company Reconstituted metal oxide varistor
JPS5366561A (en) * 1976-11-26 1978-06-14 Matsushita Electric Ind Co Ltd Thick film varistor composition
IE47121B1 (en) * 1977-07-29 1983-12-28 Gen Electric Stabilized varistor
DE2735484C2 (en) * 1977-08-05 1984-06-07 Siemens AG, 1000 Berlin und 8000 München Process for the production of thick film varistors with zinc oxide as the main component
DD137867A1 (en) * 1978-07-20 1979-09-26 Guenter Weise SUBSTRATE FOR CERAMIC SEMICONDUCTOR RESISTORS AND MANUFACTURING METHOD
AU524277B2 (en) * 1979-11-27 1982-09-09 Matsushita Electric Industrial Co., Ltd. Sintered oxides voltage dependent resistor
JPS57143203A (en) * 1981-02-27 1982-09-04 Taiyo Yuden Kk Conductive paste for forming conductive layer by baking on porcelain
FR2512578A1 (en) * 1981-09-04 1983-03-11 Thomson Csf METHOD FOR MANUFACTURING VARISTOR, THICK LAYERED ON HYBRID CIRCUIT SUBSTRATE, AND VARISTENCE THUS OBTAINED
FR2523993A1 (en) * 1982-03-24 1983-09-30 Cables De Lyon Geoffroy Delore Silk screen printing paste contg. metal oxide(s) as active materials - used for varistor prodn.
US4946709A (en) * 1988-07-18 1990-08-07 Mitsubishi Denki Kabushiki Kaisha Method for fabricating hybrid integrated circuit
US5269971A (en) * 1989-07-11 1993-12-14 Ngk Insulators, Ltd. Starting material for use in manufacturing a voltage non-linear resistor
US5250281A (en) * 1989-07-11 1993-10-05 Ngk Insulators, Ltd. Process for manufacturing a voltage non-linear resistor and a zinc oxide material to be used therefor
DE69013252T2 (en) * 1989-07-11 1995-04-27 Ngk Insulators Ltd Method of making a non-linear voltage dependent resistor using a zinc oxide material.
FR2651001B1 (en) * 1989-08-17 1993-03-12 Bp Chemicals Sa PROCESS FOR THE PREPARATION OF A ZIEGLER-NATTA CATALYST BASED ON VANADIUM AND TITANIUM
US5250229A (en) * 1991-10-10 1993-10-05 E. I. Du Pont De Nemours And Company Silver-rich conductor compositions for high thermal cycled and aged adhesion
WO1993017438A1 (en) * 1992-02-25 1993-09-02 Matsushita Electric Industrial Co., Ltd. Zinc oxide varistor and production thereof
US6232144B1 (en) * 1997-06-30 2001-05-15 Littelfuse, Inc. Nickel barrier end termination and method
JP4432489B2 (en) * 2003-12-25 2010-03-17 パナソニック株式会社 Manufacturing method of anti-static parts
US7279724B2 (en) * 2004-02-25 2007-10-09 Philips Lumileds Lighting Company, Llc Ceramic substrate for a light emitting diode where the substrate incorporates ESD protection
JP4432586B2 (en) * 2004-04-02 2010-03-17 パナソニック株式会社 Antistatic parts
DE102004044648A1 (en) * 2004-09-15 2006-03-30 Epcos Ag varistor
EP1946336A1 (en) * 2005-10-19 2008-07-23 Littelfuse Ireland Development Company Limited A varistor and production method
WO2008035319A1 (en) * 2006-09-19 2008-03-27 Littelfuse Ireland Development Company Limited Manufacture of varistors comprising a passivation layer
EP1956612B1 (en) * 2007-02-09 2014-12-31 SFI Electronics Technology Inc. Ceramic material used for protection against electrical overstress and low-capacitance multilayer chip varistor using the same
EP1993108B1 (en) * 2007-05-18 2017-03-01 Bee Fund Biotechnology Inc. Material composition having a core-shell microstructure used for a varisator
CN101105993B (en) * 2007-06-22 2011-08-10 赑丰生技股份有限公司 Surge absorber material and method for manufacturing surge absorber by the material
CN101071666B (en) * 2007-06-22 2010-06-09 赑丰生技股份有限公司 Low-capacitance layered wafer rheostat and overvoltage protection material thereof

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB874257A (en) * 1960-03-02 1961-08-02 Controllix Corp Improvements in or relating to circuit-breaker actuating mechanisms
US3220881A (en) * 1960-11-30 1965-11-30 Gen Telephone & Elect Method of making a non-linear resistor

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2835562A1 (en) * 1977-08-18 1979-03-01 Trw Inc MATERIAL FOR A GLASS LIKE ELECTRICAL RESISTANCE AND METHOD FOR MANUFACTURING IT
EP0065779A2 (en) * 1981-05-25 1982-12-01 Ngk Insulators, Ltd. Heating element
EP0065779A3 (en) * 1981-05-25 1984-02-22 Ngk Insulators, Ltd. Heating element
US5742223A (en) 1995-12-07 1998-04-21 Raychem Corporation Laminar non-linear device with magnetically aligned particles

Also Published As

Publication number Publication date
NL150936B (en) 1976-09-15
FR2138453A1 (en) 1973-01-05
US3725836A (en) 1973-04-03
FR2138453B1 (en) 1973-05-25
NL7107731A (en) 1972-12-06

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PE20 Patent expired after termination of 20 years