| 摘要 |
A substrate with an insulation layer has at least one metal base and an insulation layer. The insulation layer is laminated on a surface of the metal base. A linear thermal expansion coefficient of a material that constitutes the insulation layer is 8 ppm/K or less, and a linear thermal expansion coefficient of a material that constitutes the metal base is 17 ppm/K or more. The linear thermal expansion coefficient on the front surface of the insulation layer on a side opposite to the metal base is 6-15 ppm/K.
|
