EP0955644A3 - Verfahren zum Herstellen eines Varistors auf Basis eines Metalloxids und ein nach diesem Verfahren hergestellter Varistor - Google Patents

Verfahren zum Herstellen eines Varistors auf Basis eines Metalloxids und ein nach diesem Verfahren hergestellter Varistor Download PDF

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Publication number
EP0955644A3
EP0955644A3 EP99810304A EP99810304A EP0955644A3 EP 0955644 A3 EP0955644 A3 EP 0955644A3 EP 99810304 A EP99810304 A EP 99810304A EP 99810304 A EP99810304 A EP 99810304A EP 0955644 A3 EP0955644 A3 EP 0955644A3
Authority
EP
European Patent Office
Prior art keywords
varistor
metal oxide
outer edge
manufacturing
electrode
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
EP99810304A
Other languages
English (en)
French (fr)
Other versions
EP0955644B1 (de
EP0955644A2 (de
Inventor
Felix Dr. Greuter
Michael Hagemeister
Wolfgang Dr. Kluge
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.)
ABB Research Ltd Switzerland
ABB Research Ltd Sweden
Original Assignee
ABB Research Ltd Switzerland
ABB Research Ltd Sweden
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 ABB Research Ltd Switzerland, ABB Research Ltd Sweden filed Critical ABB Research Ltd Switzerland
Publication of EP0955644A2 publication Critical patent/EP0955644A2/de
Publication of EP0955644A3 publication Critical patent/EP0955644A3/de
Application granted granted Critical
Publication of EP0955644B1 publication Critical patent/EP0955644B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C1/00—Details
    • H01C1/14—Terminals or tapping points or electrodes specially adapted for resistors; Arrangements of terminals or tapping points or electrodes on resistors
    • H01C1/142—Terminals or tapping points or electrodes specially adapted for resistors; Arrangements of terminals or tapping points or electrodes on resistors the terminals or tapping points being coated on the resistive element
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C17/00—Apparatus or processes specially adapted for manufacturing resistors
    • H01C17/28—Apparatus or processes specially adapted for manufacturing resistors adapted for applying terminals
    • 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
    • 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
    • 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
    • Y10T29/49101—Applying terminal

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Manufacturing & Machinery (AREA)
  • Thermistors And Varistors (AREA)
  • Apparatuses And Processes For Manufacturing Resistors (AREA)

Abstract

Das Verfahren dient dem Herstellen eines Varistors, der einen zylinderförmigen Widerstandskörper (1) aus einem Werkstoff auf der Basis von Metalloxid sowie zwei jeweils auf einer von zwei parallel zueinander ausgerichteten Stirnflächen des zylinderförmigen Widerstandskörpers (1) angeordnete Elektroden (2, 3) aufweist. Dabei wird in einem ersten Verfahrensschritt auf beide Stirnflächen bis an deren als Kante ausgebildeten Aussenrand (9) eine Schicht aus Elektrodenmaterial aufgetragen. In einem zweiten Verfahrensschritt wird ein vom Aussenrand (9) begrenzter und bis auf die Strinfläche des Widerstandkörpers (1) geführter Kreisring (4) mit einer Breite von ca. 10 bis 500 µm aus der Elektrode enffernt oder der Widerstandskörper (1) und Elektrode am Aussenrand abgeschrägt (5').
Das Verfahren ermöglicht eine einfache und wirtschaftliche Fertigung eines Varistors.
EP99810304A 1998-05-06 1999-04-13 Verfahren zum Herstellen eines Varistors auf Basis eines Metalloxids und ein nach diesem Verfahren hergestellter Varistor Expired - Lifetime EP0955644B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19820134 1998-05-06
DE19820134A DE19820134A1 (de) 1998-05-06 1998-05-06 Varistor auf der Basis eines Metalloxids und Verfahren zur Herstellung eines solchen Varistors

Publications (3)

Publication Number Publication Date
EP0955644A2 EP0955644A2 (de) 1999-11-10
EP0955644A3 true EP0955644A3 (de) 2003-12-17
EP0955644B1 EP0955644B1 (de) 2005-03-02

Family

ID=7866793

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99810304A Expired - Lifetime EP0955644B1 (de) 1998-05-06 1999-04-13 Verfahren zum Herstellen eines Varistors auf Basis eines Metalloxids und ein nach diesem Verfahren hergestellter Varistor

Country Status (5)

Country Link
US (2) US6199268B1 (de)
EP (1) EP0955644B1 (de)
AT (1) ATE290251T1 (de)
DE (2) DE19820134A1 (de)
ES (1) ES2239437T3 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE527949C2 (sv) * 2004-12-22 2006-07-18 Abb Research Ltd Metod att framställa en varistor
KR100697918B1 (ko) * 2005-01-12 2007-03-20 엘에스전선 주식회사 섬락 방지 구조를 갖는 ｐｔｃ 한류기
WO2007046076A1 (en) * 2005-10-19 2007-04-26 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
CN113871118A (zh) 2017-05-16 2021-12-31 东莞令特电子有限公司 用于金属氧化物压敏电阻器的基底金属电极

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4157527A (en) * 1977-10-20 1979-06-05 General Electric Company Polycrystalline varistors with reduced overshoot
US4319215A (en) * 1979-07-13 1982-03-09 Hitachi, Ltd. Non-linear resistor and process for producing same
US4451815A (en) * 1982-09-27 1984-05-29 General Electric Company Zinc oxide varistor having reduced edge current density
DE3405834A1 (de) * 1984-02-17 1985-08-22 Siemens AG, 1000 Berlin und 8000 München Varistor aus einer scheibe aus durch dotierung halbleitendem zinkoxid-material und verfahren zur herstellung dieses varistors
US4692735A (en) * 1984-04-25 1987-09-08 Hitachi, Ltd. Nonlinear voltage dependent resistor and method for manufacturing thereof
EP0494507A1 (de) * 1990-12-12 1992-07-15 Electric Power Research Institute, Inc Hochenergie-Zinkoxid-Varistor
JPH09120908A (ja) * 1995-10-25 1997-05-06 Toshiba Corp 非直線抵抗体とその製造方法
JP2000182807A (ja) * 1998-12-14 2000-06-30 Toshiba Corp 非直線抵抗体

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1063303A (en) * 1909-07-13 1913-06-03 Gen Electric Electrical resistance.
DE1881598U (de) * 1962-04-18 1963-10-31 Siemens Ag Steuerimpedanz, insbesondere fuer ueberspannungsableiter.
NL181156C (nl) * 1975-09-25 1987-06-16 Gen Electric Werkwijze voor de vervaardiging van een metaaloxide varistor.
US4371860A (en) * 1979-06-18 1983-02-01 General Electric Company Solderable varistor
JPH0616459B2 (ja) * 1987-07-23 1994-03-02 株式会社村田製作所 磁器コンデンサの製造方法
US5264819A (en) * 1990-12-12 1993-11-23 Electric Power Research Institute, Inc. High energy zinc oxide varistor
US5548474A (en) * 1994-03-01 1996-08-20 Avx Corporation Electrical components such as capacitors having electrodes with an insulating edge

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4157527A (en) * 1977-10-20 1979-06-05 General Electric Company Polycrystalline varistors with reduced overshoot
US4319215A (en) * 1979-07-13 1982-03-09 Hitachi, Ltd. Non-linear resistor and process for producing same
US4451815A (en) * 1982-09-27 1984-05-29 General Electric Company Zinc oxide varistor having reduced edge current density
DE3405834A1 (de) * 1984-02-17 1985-08-22 Siemens AG, 1000 Berlin und 8000 München Varistor aus einer scheibe aus durch dotierung halbleitendem zinkoxid-material und verfahren zur herstellung dieses varistors
US4692735A (en) * 1984-04-25 1987-09-08 Hitachi, Ltd. Nonlinear voltage dependent resistor and method for manufacturing thereof
EP0494507A1 (de) * 1990-12-12 1992-07-15 Electric Power Research Institute, Inc Hochenergie-Zinkoxid-Varistor
JPH09120908A (ja) * 1995-10-25 1997-05-06 Toshiba Corp 非直線抵抗体とその製造方法
JP2000182807A (ja) * 1998-12-14 2000-06-30 Toshiba Corp 非直線抵抗体

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 1997, no. 09 30 September 1997 (1997-09-30) *
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 09 13 October 2000 (2000-10-13) *

Also Published As

Publication number Publication date
ATE290251T1 (de) 2005-03-15
EP0955644B1 (de) 2005-03-02
US6346872B1 (en) 2002-02-12
US6199268B1 (en) 2001-03-13
ES2239437T3 (es) 2005-09-16
DE59911675D1 (de) 2005-04-07
EP0955644A2 (de) 1999-11-10
DE19820134A1 (de) 1999-11-11

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