Multi-layer ceramic electronic device and method for producing same
US6400553B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 25, 2001 |
| Grant date | Jun 4, 2002 |
| Priority date | — |
| Expiry date | Apr 25, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01C1/148
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A multi-layer ceramic electronic device having a device body including alternately arranged dielectric layers and internal electrode layers and external electrodes formed on an outer surface of the device body, wherein the external electrodes have an undercoat layer directly formed on the outer surface of the device body so as to be electrically connected with at least part of the internal electrode layers, an intermediate layer formed on the outer surface of the undercoat layer, and an outer layer formed on the outer surface of the intermediate layer; the undercoat layer includes a first conductive material mainly made of copper and a first glass ingredient; the intermediate layer includes a second conductive material mainly made of a copper-palladium-based alloy; and the outer layer includes a third conductive material mainly made of silver and further containing palladium and a second glass ingredient.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.