| 摘要 |
PURPOSE:To mount a semiconductor element easily to a heat dissipating plate without displacing relative positions by forming an insulator electrically insulating a heat sink for the element and the heat dissipating plate to a box shape having a side plate section surrounding the side surface of the element. CONSTITUTION:A prepreg material in which glass cloth or nonwoven fabric is impregnated with an epoxy group or polyester group resin and brought to a semirigid state is compressed, heated and molded, thus manufacturing a box- shaped insulator 30. The insulator 30 has a bottom plate section 31 held by the exposed surface of a heat sink 3 and a heat dissipating plate 6, side plate sections 32, a turn-up section 33 in which one of side plates is turned up so as to cover the exposed surface of the heat sink 3, and a cylindrical section 34 connected to a fitting hole 3A for the heat sink 3. The heat sink 3 and the heat dissipating plate 6 are insulated by the bottom plate section 31, and an element 1 and the heat dissipating plate 6 are insulated electrically. The side plate sections 32 are broght into contact with the side surfaces of the element, thus regulating the horizontal positions of the element 1 and the insulator 30. |
