| 摘要 |
PROBLEM TO BE SOLVED: To provide a ceramic circuit board which is high enough in electric conductivity capable of restraining cracks from occurring in a solder layer between Si chips or the like and the ceramic circuit board even when a high power is applied, and excellent in reliability. SOLUTION: The ceramic circuit board is equipped with a ceramic board primarily formed of nitride ceramic and a metal circuit layer which is formed on the one main surface of the ceramic board and contains, at least, one element selected out of molybdenum and tungsten, and copper. COPYRIGHT: (C)2005,JPO&NCIPI
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