초록 ▼

The invention relates to circuit boards consisting of a flat core plate, 1 to 5 mm thick, of metallic material, graphite or electrically conductive carbon with a coating, 10 to 80 mm

The invention relates to circuit boards consisting of a flat core plate, 1 to 5 mm thick, of metallic material, graphite or electrically conductive carbon with a coating, 10 to 80 mm

대표청구항 ▼

A heat removing circuit board comprising: a flat core plate of a material selected from iron, titanium, conductive carbon and graphite; on said core plate a thin first intermediate layer of a material selected from copper and silver; a second intermediate layer on and in direct contact with said fir

A heat removing circuit board comprising: a flat core plate of a material selected from iron, titanium, conductive carbon and graphite; on said core plate a thin first intermediate layer of a material selected from copper and silver; a second intermediate layer on and in direct contact with said first intermediate layer, said second intermediate layer being of extremely pure aluminium; an outer aluminum eloxal layer on and in direct contact with said second intermediate layer; and conductor runs on said outer aluminum eloxal layer, said conductor runs being of a material selected from copper and nickel.