Capacitor element

Abstract

A capacitor element that includes: a capacitor portion including: an anode plate including a core portion and a porous portion on least one main surface of the core portion, a dielectric layer on a surface of the porous portion, and a cathode layer on a surface of the dielectric layer; a seal layer covering at least one main surface of the capacitor portion. A plurality of through-portions extend through the capacitor portion and the seal layer in a thickness direction. A cover layer with lower moisture permeability than the seal layer 20 is on either one or both of at least a part of a space between an insulating member filled in the through-portions and a wall surface of the anode plate exposed to the through-portions and at least a part of an exposed side surface of the anode plate at an edge of the capacitor portion.

Dependencies are inferred from the claim text.