Patent ID: 6631068
Filing Date: 2003-10-07
Classification: H01G

Abstract:
A film for self-protected capacitors, wherein the film is wound in a machine direction, the film comprising:(a) a dielectric film; (b) a metallized layer on a portion of the dielectric film such that the dielectric film has a metallized edge, an unmetallized edge, and an uncoated area between the metallized layer and the unmetallized edge, wherein the metallized layer has a center margin substantially parallel to the machine direction of the film, wherein the center margin is disposed in the metallized layer approximately equidistant to the metallized edge and to the unmetallized edge, wherein the metallized layer has a plurality of transverse margins running from the center margin to the uncoated area, and wherein the center margin and the plurality of transverse margins define a plurality of segments; and (c) at least one fuse disposed in the center margin within each segment of the plurality of segments, wherein a first region of the metallized layer is proximate to the metallized edge and a second region of the metallized layer is between the first region and the uncoated area, wherein the first region has a metallization heavier than the second region, and wherein the center margin is in the second region, and wherein a transition area is disposed between the first region and the second region.