Importance

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Abstract

A metalized plastic film for a rolled film capacitor or a laminated film capacitor and a film capacitor are disclosed. The metalized plastic film having a plastic film and an electrode metal deposited on the plastic film and patterned for a film capacitor includes rectangular split electrodes extending from a margin region defined at one side of the plastic film as a region free of the deposited electrode metal toward an opposite side of the plastic film, to have a length corresponding to about one fourth to four fifth of a width of the plastic film, the split electrodes being continuously arranged at specified intervals in a longitudinal direction of the plastic film, fuse portions each formed in an associated one of the split electrodes between the margin region and an electrode metal contacting region of the associated split electrode. Therefore, it is possible to reduce self-heating of the film capacitor and prevent capacitance of the film capacitor from decreasing due to an operation of the fuse portions, thereby ensuring safety of the capacitor, scaling down the capacitor and using the capacitor at a high temperature.

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First Claim