Heat sink with electrically-insulating, thermally-conductive layer on which semiconductor components are mounted, comprises metallic body with surface-oxidation

摘要

The body (10) is made of metallic material or includes a layer of metallic material. Electrical components (2) are arranged on its upper surface. An electrically-insulating oxide layer (12) completely covers the body, or alternatively forms localized islands upon it. The layer insulates the components. It is an oxide layer, formed by oxidation of the metallic material. The body is aluminum, the insulant is aluminum oxide. The layer forms a substrate or circuit board for fastening of electronic components in good thermal contact.