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 stabilityInfo
- 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- Withdrawn
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.
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)
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 |
-
1974
- 1974-09-25 SE SE7412081A patent/SE7412081L/ not_active Application Discontinuation
- 1974-09-25 DE DE19742445704 patent/DE2445704A1/en active Pending
- 1974-09-26 JP JP49110046A patent/JPS5076591A/ja active Pending
- 1974-09-26 FR FR7432406A patent/FR2246033A1/en not_active Withdrawn
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 |