Metal oxide varistor with controllable breakdown voltage and capacitance and method of making
US4495482A · kind A · utility
16Cited by
4References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 16, 1983 |
| Grant date | Jan 22, 1985 |
| Priority date | — |
| Expiry date | Jun 16, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49101
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A metal oxide varistor with controllable breakdown voltage and capacitance characteristics is fabricated by controlled diffusion of lithium into conventional metal oxide varistor material at elevated temperature. The varistor layer containing lithium exhibits an increased breakdown voltage, lowered capacitance, and low leakage current while maintaining a high coefficient of nonlinearity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.