Connector

A connector includes: a terminal including a base portion and a cylindrical portion, an outer circumferential surface thereof contacting a counterpart terminal; and a heat transfer member which contacts an inner circumferential surface of the cylindrical portion, absorbs a portion of heat generated at the cylindrical portion, and transports the absorbed heat to a base portion side. The heat transfer member is configured to satisfy Q1>Q2, where Q1 is defined as a heat transfer amount transported to the base portion side during conduction, using the heat transfer member, and Q2 is defined as a heat transfer amount transported to the base portion side during the conduction, using another heat transfer member constituted of a member having a heat conductivity identical to that of the cylindrical portion, when the other one is arranged to fill a space formed on an inner circumferential surface side of the cylindrical portion.