Film capacitor element and film capacitor

A film capacitor element, comprising:

• a body including a plurality of dielectric films, a plurality of first electrode films, and a plurality of second electrode films being stacked on one another or being wound together;
• a first external electrode at one end of the body and electrically connected to the plurality of first electrode films;
• and
• a second external electrode at another end of the body and electrically connected to the plurality of second electrode films,
• wherein the body includes a capacitance portion in which each of the plurality of first electrode films faces a corresponding second electrode film of the plurality of second electrode films with a corresponding dielectric film of the plurality of dielectric films in between,
• the capacitance portion includes spaces each between a corresponding dielectric film of the plurality of dielectric films and a corresponding first electrode film of the plurality of first electrode films or between a corresponding dielectric film of the plurality of dielectric films and a corresponding second electrode film of the plurality of second electrode films, and
• wherein a maximum thickness difference Lmax−1m is greater than or equal to the thickness of the dielectric film, wherein Lmax is the dimension of the body in a stacking direction and 1m is the dimension of the first external electrode or the second external electrode in the stacking direction.