INSULATING CIRCUIT BOARD AND SEMICONDUCTOR DEVICE USING THE SAME

摘要

PROBLEM TO BE SOLVED: To improve an insulation-resistance of an insulating circuit board as well as an internal-insulating type semiconductor device using it. SOLUTION: The thickness of a conductor terminal of an insulating circuit board is 10μm or larger. The contact angle between a joint material and an insulating substrate is set to 90 deg. or larger, or a tip end is a ball of radius 5μm or larger. The width of protrusion at a terminal side is 10μm or larger in a plane. Since the electric field concentration of the insulating circuit board is suppressed, an insulation resistance is improved.