Metallized film capacitor
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsKohei Shiota, Toshiharu Saito, Hiroki Takeoka
Life of this patent
Estimating the term…
Abstract
A metallized-film capacitor includes a slit (5a) at approx. center of the width (W) of an effective electrode which actually forms a capacitance of a pair of deposited electrodes (110, 210). Divisional electrodes (2a, 2b) exist at a place between the center and insulation margins (4a, 4b), and the electrodes (2a, 2b) are coupled in parallel to each other by fuses (7a, 7b) disposed away from metallized contacts (6a, 6b). Such a structure as placing fuses (7a, 7b) away from the contacts (6a, 6b) allows reducing a current supplied from the contacts (6a, 6b) and running through fuses (7a, 7b), thereby lowering heat generated from fuses (7a, 7b). As a result, a temperature rise in the metallized-film capacitor can be suppressed.
Claims20
A metallized-film capacitor comprising:
- a dielectric film having a first film face and a second film face;
- a first deposited electrode covering the first film face;
- a second deposited electrode covering the second film face;
- and
- a first metallized contact and a second metallized contact disposed on both end-faces of the dielectric film,
- wherein the first deposited electrode includes:
- a first non-divisional electrode;
- a first divisional electrode separated by a first slit from the first non-divisional electrode, the first divisional electrode having substantially an identical thickness as the first non-divisional electrode;
- a first fuse for coupling the first divisional electrode to the first non-divisional electrode;
- wherein the second deposited electrode includes:
- a second non-divisional electrode;
- a second divisional electrode separated by a second slit from the second non-divisional electrode, the second divisional electrode having substantially an identical thickness as the second non-divisional electrode;
- a second fuse for coupling the second divisional electrode to the second non-divisional electrode;
- wherein the first non-divisional electrode overlaps the second divisional electrode, and the second non-divisional electrode overlaps the first divisional electrode.
Dependencies are inferred from the claim text.