A disclosed electrolytic capacitor includes a capacitor element and a cathode lead terminal. The capacitor element includes an anode body and a cathode part. The cathode lead terminal includes a connection part that is connected to the cathode part via a conductive member. The connection part includes a plate-shaped part, and first and second side walls standing from the plate-shaped part. Grooves are formed in a surface of each of the plate-shaped part and the first and second side walls. The grooves include first grooves and second grooves that are formed so as to extend continuously from the plate-shaped part across the first and second side walls. The conductive member is disposed between one surface of the cathode part and the plate-shaped part, and between two side surfaces of the cathode part and the respective corresponding first and second side surfaces.

A disclosed electrolytic capacitor includes a capacitor element and a cathode lead terminal. The capacitor element includes an anode body and a cathode part. The cathode lead terminal includes a connection part that is connected to the cathode part via a conductive member. The connection part includes a plate-shaped part, and first and second side walls standing from the plate-shaped part. Grooves are formed in a surface of each of the plate-shaped part and the first and second side walls. The grooves include first grooves and second grooves that are formed so as to extend continuously from the plate-shaped part across the first and second side walls. The conductive member is disposed between one surface of the cathode part and the plate-shaped part, and between two side surfaces of the cathode part and the respective corresponding first and second side surfaces.

A capacitor (2) includes a capacitor main body (4), a base (6), and a resin layer (8-1). The capacitor main body includes an outer package case (10), an opening sealing member (14) attached to an opening of the outer package case, and a terminal lead (16-1, 16-2) extending through the opening sealing member. The base is disposed toward the opening sealing member of the capacitor main body and includes an insertion through hole (18-1, 18-2) into which the terminal lead is inserted to be exposed on a mounting surface side, and a protruding portion (20) surrounding the insertion through hole. The resin layer is arranged at least between the base and the opening sealing member. The base and the resin layer are in contact with or spaced apart from each other without at least partly adhering to each other.

A solid electrolytic capacitor comprises a capacitor element, an outer anode terminal, an outer cathode terminal and an outer mold. The capacitor element has an anode lead wire, an anode body and a cathode layer. The capacitor element has an upper surface and a lower surface in an up-down direction. The outer cathode terminal and the outer anode terminal are positioned away from each other in a predetermined direction perpendicular to the up-down direction. The outer cathode terminal has an upper portion, a lower portion and a connecting portion. One of the upper portion and the lower portion is longer than a remaining one of the upper portion and the lower portion in the predetermined direction. The outer mold covers the capacitor element so that each of the outer anode terminal and the outer cathode terminal is partially exposed to an outside of the solid electrolytic capacitor.

A solid electrolytic capacitor comprises a capacitor element, an outer anode terminal, an outer cathode terminal and an outer mold. The capacitor element has an anode lead wire, an anode body and a cathode layer. The capacitor element has an upper surface and a lower surface in an up-down direction. The outer cathode terminal and the outer anode terminal are positioned away from each other in a predetermined direction perpendicular to the up-down direction. The outer cathode terminal has an upper portion, a lower portion and a connecting portion. One of the upper portion and the lower portion is longer than a remaining one of the upper portion and the lower portion in the predetermined direction. The outer mold covers the capacitor element so that each of the outer anode terminal and the outer cathode terminal is partially exposed to an outside of the solid electrolytic capacitor.

A substrate-type multi-layer polymer capacitor (MLPC), including a casing, a core, a first electroplated terminal and a second electroplated terminal. The core is arranged in an inner cavity of the casing. The casing is formed by joining two first packaging plates with two second packaging plates. The first and second electroplated terminals are formed by electroplating. The first electroplated terminal is configured to cover one end of the casing to form an anode electrically led out from the core, and the second electroplated terminal is configured to the other end of the casing to form a cathode electrically led out from the core. The first packaging plate includes a substrate, an electrode plate and two metal plates. The first and second electroplated terminals are integrally sealed with the casing.

A capacitor assembly package structure and a method of manufacturing the same are provided. The capacitor assembly package structure includes a capacitor unit, an insulative package body, a conductive connection layer and an electrode unit. The capacitor unit includes a plurality of capacitors, and each capacitor includes a positive portion and a negative portion. The insulative package body partially encloses the capacitors, and the positive portion has a positive lateral surface exposed from a first lateral surface of the insulative package body. The conductive connection layer is electrically connected to the negative portion. The electrode unit includes a first electrode structure and a second electrode structure. The first electrode structure encloses a first portion of the insulative package body and electrically connects to the positive portion, and the second electrode structure encloses a second portion of the insulative package body and electrically connects to the conductive connection layer.

A capacitor assembly package structure and a method of manufacturing the same are provided. The capacitor assembly package structure includes a capacitor unit, an insulative package body, a conductive connection layer and an electrode unit. The capacitor unit includes a plurality of capacitors, and each capacitor includes a positive portion and a negative portion. The insulative package body partially encloses the capacitors, and the positive portion has a positive lateral surface exposed from a first lateral surface of the insulative package body. The conductive connection layer is electrically connected to the negative portion. The electrode unit includes a first electrode structure and a second electrode structure. The first electrode structure encloses a first portion of the insulative package body and electrically connects to the positive portion, and the second electrode structure encloses a second portion of the insulative package body and electrically connects to the conductive connection layer.

A conductive paste for an electrolytic capacitor used for connecting a cathode part and a cathode lead terminal of the electrolytic capacitor. The conductive paste includes a thermosetting resin, and conductive particles, and the conductive particles include flaky metal particles and acicular conductive particles. The content of the conductive particles in the conductive paste is, for example, 50 mass % or more and 70 mass % or less, and the mass ratio of the flaky metal particles to the total of the flaky metal particles and the acicular conductive particles is, for example, 60% or more and 80% or less.

An electrolytic capacitor includes a capacitor element. The capacitor element includes an anode body, a dielectric layer disposed on a surface of the anode body, a solid electrolyte layer covering at least a part of the dielectric layer, and a first layer covering at least a part of the solid electrolyte layer. The first layer is in contact with the solid electrolyte layer. The first layer constitutes at least a part of the cathode lead-out layer. An electrode potential P.sub.s of the solid electrolyte layer is higher than an electrode potential P.sub.1 of the first layer.