SEMICONDUCTOR RECTIFIER
PURPOSE:To obtain a resin-sealed semiconductor rectifier having small bottom area by using an aluminum metallized substrate as a bottom plate of a frame- shaped resin case having no bottom plate, and projecting the substrate from the bottom of a case, thereby remarkably improving the heat dissipatin...
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Format: | Patent |
Sprache: | eng |
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Zusammenfassung: | PURPOSE:To obtain a resin-sealed semiconductor rectifier having small bottom area by using an aluminum metallized substrate as a bottom plate of a frame- shaped resin case having no bottom plate, and projecting the substrate from the bottom of a case, thereby remarkably improving the heat dissipating characteristic. CONSTITUTION:A frame-shaped resin case 1 having no bottom plate is used, and a metal plate adapted for heat sink such as a substrate 8 metallized with ceramics 8a or copper pattern 8b to aluminum is used as a bottom to be engaged with the lower end of the case 1. The substrate 8 is projected from the bottom of the case 1 so as to be lower than the lower edge of the case 1 at the bottom of the substrate 8 to form an enclosure. In this structure, since heat generated from a diode 2 is radiated through the substrate 8 to the exterior, remarkably high heat sink characteristics are obtained. |
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