IE36727B1 - Metal oxide varistor - Google Patents

Metal oxide varistor

Info

Publication number
IE36727B1
IE36727B1 IE132572A IE132572A IE36727B1 IE 36727 B1 IE36727 B1 IE 36727B1 IE 132572 A IE132572 A IE 132572A IE 132572 A IE132572 A IE 132572A IE 36727 B1 IE36727 B1 IE 36727B1
Authority
IE
Ireland
Prior art keywords
electrodes
substrate
nitride
thermal conductivity
high thermal
Prior art date
Application number
IE132572A
Other versions
IE36727L (en
Original Assignee
Gen Electric
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 Gen Electric filed Critical Gen Electric
Publication of IE36727L publication Critical patent/IE36727L/en
Publication of IE36727B1 publication Critical patent/IE36727B1/en

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C1/00—Details
    • H01C1/08—Cooling, heating or ventilating arrangements
    • 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)
  • Details Of Resistors (AREA)

Abstract

1361704 Varistors GENERAL ELECTRIC CO 29 Sept 1972 [1 Oct 1971] 45037/72 Heading H1K A varistor assembly 10 (Fig. 3) comprises a metal oxide substrate 11 having opposed major surfaces 12, 13 and α>10 for current density 10<SP>-3</SP> to 10<SP>2</SP> A/cm<SP>2</SP> in the characteristic I = (V/(C)<SP>α</SP> where I current, V = voltage, and C is a constant. Electrodes 14, 15 ohmically contact surfaces 12, 13 and have attached leads 16, 17. High thermal conductivity spaced plates 19, 20 of, e.g. Cu parallel to the surfaces are bonded together by potting compound 18 enclosing the varistor substrate and its electrodes for heat dissipation, and the compound contains high thermal conductivity insulant material, e.g. boron nitride, beryllium nitride or oxide, aluminium nitride and an epoxy resin. The substrate material is polycrystalline material of, e.g. zinc oxide with a small proportion of bismuth, aluminium, iron, magnesium or calcium oxides sintered together and pressed into shape. One of the spaced plates may be drilled for mounting, and in a modification (Fig. 4, not shown) the leads may be planar extensions of the electrodes. [GB1361704A]
IE132572A 1971-10-01 1972-09-29 Metal oxide varistor IE36727B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US18572371A 1971-10-01 1971-10-01

Publications (2)

Publication Number Publication Date
IE36727L IE36727L (en) 1973-04-01
IE36727B1 true IE36727B1 (en) 1977-02-02

Family

ID=22682213

Family Applications (1)

Application Number Title Priority Date Filing Date
IE132572A IE36727B1 (en) 1971-10-01 1972-09-29 Metal oxide varistor

Country Status (6)

Country Link
JP (1) JPS5443700B2 (en)
DE (1) DE2248159C2 (en)
FR (1) FR2156651B1 (en)
GB (1) GB1361704A (en)
IE (1) IE36727B1 (en)
SE (1) SE381947B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5217022A (en) * 1975-07-30 1977-02-08 Fuji Xerox Co Ltd Developer for electrostatic printing

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE472109C (en) * 1922-02-11 1929-02-25 Siemens Schuckertwerke Akt Ges Lightning arrester, consisting of a plurality of flat bodies or discs with surfaces in contact with one another, one on top of the other
DE635491C (en) * 1933-07-25 1936-09-18 Aeg Resistor for surge arresters composed of conductive materials and binding agents
US2501322A (en) * 1946-11-07 1950-03-21 Westinghouse Electric Corp Moisture-resistant lightning arrester valve block
NL192214A (en) * 1954-01-21
DE1110311B (en) * 1954-02-27 1961-07-06 Siemens Ag Electrical components built into the housing and protected against moisture by being embedded in a casting compound
NL217849A (en) * 1956-06-12
FR1379676A (en) * 1962-11-09 1964-11-27 Philco Corp Further training in semiconductor devices
US3278813A (en) * 1964-04-22 1966-10-11 Gen Electric Transistor housing containing packed, earthy, nonmetallic, electrically insulating material
CA831691A (en) * 1967-10-09 1970-01-06 Matsuoka Michio Non-linear resistors of bulk type

Also Published As

Publication number Publication date
DE2248159A1 (en) 1973-04-19
FR2156651B1 (en) 1977-08-26
DE2248159C2 (en) 1983-03-17
GB1361704A (en) 1974-07-30
IE36727L (en) 1973-04-01
JPS4843154A (en) 1973-06-22
SE381947B (en) 1975-12-22
FR2156651A1 (en) 1973-06-01
JPS5443700B2 (en) 1979-12-21

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