GB1361704A - Metal oxide varistor - Google Patents
Metal oxide varistorInfo
- Publication number
- GB1361704A GB1361704A GB4503772A GB4503772A GB1361704A GB 1361704 A GB1361704 A GB 1361704A GB 4503772 A GB4503772 A GB 4503772A GB 4503772 A GB4503772 A GB 4503772A GB 1361704 A GB1361704 A GB 1361704A
- Authority
- GB
- United Kingdom
- Prior art keywords
- electrodes
- substrate
- nitride
- thermal conductivity
- high thermal
- 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
Links
- 229910044991 metal oxide Inorganic materials 0.000 title abstract 2
- 150000004706 metal oxides Chemical class 0.000 title abstract 2
- 239000000463 material Substances 0.000 abstract 3
- 239000000758 substrate Substances 0.000 abstract 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 abstract 2
- 229910017083 AlN Inorganic materials 0.000 abstract 1
- PIGFYZPCRLYGLF-UHFFFAOYSA-N Aluminum nitride Chemical compound [Al]#N PIGFYZPCRLYGLF-UHFFFAOYSA-N 0.000 abstract 1
- 229910052582 BN Inorganic materials 0.000 abstract 1
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 abstract 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 abstract 1
- LNUFLCYMSVYYNW-ZPJMAFJPSA-N [(2r,3r,4s,5r,6r)-2-[(2r,3r,4s,5r,6r)-6-[(2r,3r,4s,5r,6r)-6-[(2r,3r,4s,5r,6r)-6-[[(3s,5s,8r,9s,10s,13r,14s,17r)-10,13-dimethyl-17-[(2r)-6-methylheptan-2-yl]-2,3,4,5,6,7,8,9,11,12,14,15,16,17-tetradecahydro-1h-cyclopenta[a]phenanthren-3-yl]oxy]-4,5-disulfo Chemical compound O([C@@H]1[C@@H](COS(O)(=O)=O)O[C@@H]([C@@H]([C@H]1OS(O)(=O)=O)OS(O)(=O)=O)O[C@@H]1[C@@H](COS(O)(=O)=O)O[C@@H]([C@@H]([C@H]1OS(O)(=O)=O)OS(O)(=O)=O)O[C@@H]1[C@@H](COS(O)(=O)=O)O[C@H]([C@@H]([C@H]1OS(O)(=O)=O)OS(O)(=O)=O)O[C@@H]1C[C@@H]2CC[C@H]3[C@@H]4CC[C@@H]([C@]4(CC[C@@H]3[C@@]2(C)CC1)C)[C@H](C)CCCC(C)C)[C@H]1O[C@H](COS(O)(=O)=O)[C@@H](OS(O)(=O)=O)[C@H](OS(O)(=O)=O)[C@H]1OS(O)(=O)=O LNUFLCYMSVYYNW-ZPJMAFJPSA-N 0.000 abstract 1
- 239000004411 aluminium Substances 0.000 abstract 1
- 229910052782 aluminium Inorganic materials 0.000 abstract 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract 1
- 235000010210 aluminium Nutrition 0.000 abstract 1
- 229910052790 beryllium Inorganic materials 0.000 abstract 1
- -1 beryllium nitride Chemical class 0.000 abstract 1
- 229910052797 bismuth Inorganic materials 0.000 abstract 1
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 abstract 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical class [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 abstract 1
- 235000012255 calcium oxide Nutrition 0.000 abstract 1
- 150000001875 compounds Chemical class 0.000 abstract 1
- 239000003822 epoxy resin Substances 0.000 abstract 1
- 230000017525 heat dissipation Effects 0.000 abstract 1
- 229910052742 iron Inorganic materials 0.000 abstract 1
- 235000013980 iron oxide Nutrition 0.000 abstract 1
- 229910052749 magnesium Inorganic materials 0.000 abstract 1
- 239000011777 magnesium Substances 0.000 abstract 1
- 235000012245 magnesium oxide Nutrition 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 1
- 229920000647 polyepoxide Polymers 0.000 abstract 1
- 238000004382 potting Methods 0.000 abstract 1
- 239000011787 zinc oxide Substances 0.000 abstract 1
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.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US18572371A | 1971-10-01 | 1971-10-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1361704A true GB1361704A (en) | 1974-07-30 |
Family
ID=22682213
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4503772A Expired GB1361704A (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 (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5217022A (en) * | 1975-07-30 | 1977-02-08 | Fuji Xerox Co Ltd | Developer for electrostatic printing |
| CN113468468B (en) * | 2021-05-28 | 2024-09-10 | 中国电力科学研究院有限公司 | A method and system for determining uniformity of multi-column parallel metal oxide voltage limiter |
Family Cites Families (9)
| 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 |
| NL101297C (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 |
-
1972
- 1972-09-29 FR FR7234495A patent/FR2156651B1/fr not_active Expired
- 1972-09-29 SE SE1264172A patent/SE381947B/en unknown
- 1972-09-29 GB GB4503772A patent/GB1361704A/en not_active Expired
- 1972-09-29 JP JP9723072A patent/JPS5443700B2/ja not_active Expired
- 1972-09-29 IE IE132572A patent/IE36727B1/en unknown
- 1972-09-30 DE DE19722248159 patent/DE2248159C2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR2156651B1 (en) | 1977-08-26 |
| IE36727B1 (en) | 1977-02-02 |
| JPS5443700B2 (en) | 1979-12-21 |
| DE2248159C2 (en) | 1983-03-17 |
| IE36727L (en) | 1973-04-01 |
| FR2156651A1 (en) | 1973-06-01 |
| DE2248159A1 (en) | 1973-04-19 |
| JPS4843154A (en) | 1973-06-22 |
| SE381947B (en) | 1975-12-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| 746 | Register noted 'licences of right' (sect. 46/1977) | ||
| PCNP | Patent ceased through non-payment of renewal fee |