| CPC H01G 4/018 (2013.01) [H01G 4/32 (2013.01)] | 15 Claims |
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1. A film capacitor comprising:
a laminate including:
a first dielectric film including a first main surface and a second main surface opposing each other in a thickness direction;
a first metal layer on the first main surface of the first dielectric film;
a second dielectric film including a third main surface and a fourth main surface opposing each other in the thickness direction; and
a second metal layer on one of the first main surface of the first dielectric film, the second main surface of the first dielectric film, and the third main surface of the second dielectric film, wherein:
the first dielectric film and the second dielectric film are arranged such that the first main surface of the first dielectric film and the fourth main surface of the second dielectric film face each other in the thickness direction, and the second main surface of the first dielectric film and the third main surface of the second dielectric film face each other in the thickness direction,
the laminate defines a first end surface and a second end surface opposing each other in a width direction, the width direction being perpendicular to the thickness direction;
a first external electrode on the first end surface of the laminate, the first external electrode being connected to the first metal layer and not connected to the second metal layer; and
a second external electrode on the second end surface of the laminate, the second external electrode being connected to the second metal layer and not connected to the first metal layer,
wherein:
of the first dielectric film and the second dielectric film adjacent to each other in the thickness direction, the first dielectric film with the first metal layer on the first main surface protrudes toward the first external electrode with respect to the second dielectric film without the first metal layer on the main surfaces;
in a cross section along the thickness direction and the width direction, the first end surface of the laminate defines a first unevenness continuously along the thickness direction, the first unevenness having a profile defined by a curve that connects ends of the first dielectric film with the first metal layer on the first main surface;
the first unevenness has a height of 0.07 mm to 0.25 mm and a pitch of 0.07 mm to 0.15 mm as measured based on JIS B 0601:2001;
in the width direction, first gaps having a length in the width direction of 0.3 mm or greater are present between the second dielectric film without the first metal layer on the main surfaces and the first external electrode;
of the first dielectric film and the second dielectric film adjacent to each other in the thickness direction, one of the first and second dielectric films with the second metal layer on one of the main surfaces protrudes toward the second external electrode with respect to the other of the first and second dielectric films without the second metal layer on the main surfaces;
in the cross section along the thickness direction and the width direction, the second end surface of the laminate defines a second unevenness continuously along the thickness direction, the second unevenness having a profile defined by a curve that connects ends of the one of the first and second dielectric films with the second metal layer on one of the main surfaces;
the second unevenness has a height of 0.07 mm to 0.25 mm and a pitch of 0.07 mm to 0.15 mm as measured based on JIS B 0601:2001; and
in the width direction, second gaps having a length in the width direction of 0.3 mm or greater are present between the other of the first and second dielectric films without the second metal layer on the main surfaces and the second external electrode.
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