Thin film overvoltage protection devices
US4809044A · kind A · utility
272Cited by
1References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 26, 1986 |
| Grant date | Feb 28, 1989 |
| Priority date | — |
| Expiry date | Nov 26, 2006 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10N70/8828
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Solid-state overvoltage protection devices, preferably formed of deposited thin film, chalcogenide, threshold switching materials, typically include at least one elongated current conduction path through an elongated cross-sectional area of the threshold switching material. The cross-sectional area is formed with a length far exceeding the effective width thereof for distributing the transient current produced by overvoltage conditions over a relatively large area. In this manner, the concentration of localized heating effects can be avoided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.