FR2246033A1 - Sintered metal oxide varistor with vitreous passivating coating - contg. bismuth, boron, silicon oxides, for stability - Google Patents

Sintered metal oxide varistor with vitreous passivating coating - contg. bismuth, boron, silicon oxides, for stability

Info

Publication number
FR2246033A1
FR2246033A1 FR7432406A FR7432406A FR2246033A1 FR 2246033 A1 FR2246033 A1 FR 2246033A1 FR 7432406 A FR7432406 A FR 7432406A FR 7432406 A FR7432406 A FR 7432406A FR 2246033 A1 FR2246033 A1 FR 2246033A1
Authority
FR
France
Prior art keywords
contg
metal oxide
vitreous
sintered metal
bismuth
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.)
Withdrawn
Application number
FR7432406A
Other languages
French (fr)
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.)
General Electric Co
Original Assignee
General Electric Co
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 General Electric Co filed Critical General Electric Co
Publication of FR2246033A1 publication Critical patent/FR2246033A1/en
Withdrawn legal-status Critical Current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
    • H01C7/102—Varistor boundary, e.g. surface layers

Landscapes

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

Abstract

Sintered metal oxide varistor contg. a small proportion of selected additives has a Ag-free passivating coating, pref. of a vitreous material. In particular, the varistor is based on ZnO contg. added oxide(s) of Bi, Co, Mn and/or Ti and the coating contains oxide(s) of Bi, B and/or Si. the coating is (largely) absorbed by the varistor and is provided with metal contacts. The varistor is much more stable than commercially-available varistors.
FR7432406A 1973-09-27 1974-09-26 Sintered metal oxide varistor with vitreous passivating coating - contg. bismuth, boron, silicon oxides, for stability Withdrawn FR2246033A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US40132373A 1973-09-27 1973-09-27

Publications (1)

Publication Number Publication Date
FR2246033A1 true FR2246033A1 (en) 1975-04-25

Family

ID=23587272

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7432406A Withdrawn FR2246033A1 (en) 1973-09-27 1974-09-26 Sintered metal oxide varistor with vitreous passivating coating - contg. bismuth, boron, silicon oxides, for stability

Country Status (4)

Country Link
JP (1) JPS5076591A (en)
DE (1) DE2445704A1 (en)
FR (1) FR2246033A1 (en)
SE (1) SE7412081L (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2639042C3 (en) * 1976-08-30 1982-03-25 Matsushita Electric Industrial Co., Ltd., Kadoma, Osaka Voltage-dependent resistance element and method for its manufacture
JP2002151307A (en) * 2000-08-31 2002-05-24 Toshiba Corp Voltage nonlinear resistor

Also Published As

Publication number Publication date
DE2445704A1 (en) 1975-04-10
JPS5076591A (en) 1975-06-23
SE7412081L (en) 1975-04-01

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Legal Events

Date Code Title Description
ST Notification of lapse