Patent ID: 7372159

Claim:
A semiconductor device comprising: first and second electrodes having layers containing copper as main components; a semiconductor element arranged between said first and second electrodes and electrically connected to said first and second electrodes; and a glass seating member which seals said first electrode, said semiconductor element, and said second electrode, wherein; the semiconductor element includes a metal electrode, the semiconductor element is a Schottky barrier diode, the first and second electrodes are constituted by Dumet wires, ratios of the layers in the first and second electrodes containing copper as main components fall within the range of 21 to 24 wt %, said first and second electrodes have copper oxide layers formed on the outer peripheries of said layers containing copper as main components, the copper oxide layers contacting with said glass sealing member, the thickness of said copper oxide layers is 1.5 μm or less at the time before said first and second electrodes are glass-sealed, a sealing temperature of said glass sealing member is 630° C. or less and is a temperature at which silicification of said metal electrode of the semiconductor element is not enhanced, and a glass softening point of said glass sealing member is 560° C. or less.