Electrolytic capacitor and method for producing same

An electrolytic capacitor comprising:

• a first electrode including a first electrode foil, a first internal lead having a foil shape and connected to the first electrode foil, and a first external lead having a rod shape and connected to the first internal lead;
• a second electrode;
• a container that houses the first electrode and the second electrode;
• and
• a sealing plate that closes an opening of the container,
• wherein:
• the first internal lead includes a through hole penetrating in a direction perpendicular to a principal surface of the first internal lead,
• the first external lead includes a lead main body part, a first part, and a second part disposed closer to a connecting part with the first internal lead than the first part, the first external lead being inserted into an insertion port of the sealing plate and led out of the container,
• the first part closes at least a part of the insertion port of the sealing plate,
• a diameter of the second part is larger than an inner diameter of the insertion port, a diameter of the first part, and a diameter of the lead main body part,
• the diameter of the lead main body part is smaller than the diameter of the first part,
• the lead main body part is inserted into the through hole of the first internal lead, and is fixed to the first internal lead by one end part of the lead main body part being crushed,
• the principal surface of the first internal lead faces and is in direct contact with the second part, and
• a length of a first lead-out part of the first internal lead is less than or equal to a maximum diameter of the container, the first lead-out part being a part from an end surface of the first electrode foil to a contact part with the first external lead.