JPS6477905A - Capacitor - Google Patents

Abstract

PURPOSE:To miniaturize a capacitor while improving heat-insulating properties by disposing a sheathing member onto the cut surface of a film capacitor element having protective layers to the upper and lower sections of a capacitance section and laminating films, in which polyphenylene oxide is formed onto one surfaces of polyphenylene sulfide PPS films, in the protective layers. CONSTITUTION:Protective layers 9, 10 are shaped to the upper and lower sections of a capacitance section in which double side evaporated and double- side coated films are laminated. The protective layers 9, 10 are constituted by laminating films in which resin films 12 composed of PPO are formed onto one surfaces of resin films 11 such as PPS films. Thermo-setting sheets called prepreg sheets in which epoxy resin layers 8b are shaped onto polyimide films 8a are stuck onto two surfaces as the cut surfaces of a discrete unit capacitor, and heated and cured and a sheathing member 8 is formed, thus acquiring a laminated film chip capacitor. The sheathing member 8 covers the whole end face of a capacitance section, and has width in an extent that it is arranged extending over the whole regions or partial regions of the end faces of the protective layers 9, 10.