| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a manufacturing method of an insulation circuit board which has excellent electric insulation properties. <P>SOLUTION: In an insulation circuit board 4, a circuit board 6 made of a conductive material is brazed on one surface of an electric insulation plate 5, and a surface located on the opposite side of the surface of the circuit board 6 serves as a wiring surface 9 having an electronic element mounting part 11, the surface of the circuit board being brazed to the electric insulation plate 5. Further, the electric insulation plate 5 is larger than the circuit board 6 and a contour of the electric insulation plate 5 is positioned at the outer side relative to a contour of the circuit board 6. In a manufacturing method of the insulation circuit board 4, a melted brazing material intrusion prevention object which prevents the melted brazing material from intruding into the wiring surface 9 is adhered to the wiring surface 9 of the circuit board 6. The circuit board 6 is laminated on the electric insulation plate 5 so that a brazing material layer exist between the electric insulation plate 5 and the circuit board 6, and the electric insulation plate 5, the circuit board 6, and the brazing material layer are heated in the state. The electric insulation plate 5 and the circuit board 6 are brazed to each other with the brazing material melted from the brazing material layer. <P>COPYRIGHT: (C)2013,JPO&INPIT |
