METALIZED FILM CAPACITOR, CASE MODULE TYPE CAPACITOR USING THE SAME, INVERTER CIRCUIT, AND VEHICLE DRIVE MOTOR DRIVE CIRCUIT

摘要

A metalized film capacitor capable of exhibiting stable performance in a wide temperature range is provided. The metalized film capacitor has an elliptical cross sectional shape having a major axis of 60 mm or above. In this capacitor, offset (107) for shifting in the width direction of a pair of metalized film (103) is set to 1.2 mm or above. Since the bonding state between metal vapor-deposited electrode (102) and metal sprayed electrode (106) formed on the end surface is stable, a stable contact state between metal sprayed electrode (106) and dielectric film (101) is maintained, thereby preferably maintaining tan´ and exhibiting excellent performance even if the use temperature range is increased and the thermal stress is increased. the invention claims a metalized film capacitor comprising a capacitor element formed by winding a metalized film based on a metal vapor-deposited electrode formed on a polypropylene film around a winding core. Flattening the winding element, so as to form a sectional shape in an elliptical shape and a pair of external electrodes provided on both end surfaces of the capacitor element characterized in that in the elliptical sectional shape :
-"a/b" is not less than 3
- "a" is not less than 60 mm in which a major axis is denoted by "a" and a minor axis is denoted by "b".
- the winding core being obtained by winding 5 to 10 turns.