Abstract: A miniaturized capacitor having built-in conductive leads includes a substrate, a main capacitor body, a plurality of conductive members and a plurality of conductive leads. The main capacitor body, disposed on the substrate, includes a capacitor unit and a packaging structure wrapping the capacitor unit. Each of the plurality of conductive members penetrates through the substrate, each of the plurality of conductive leads penetrates through the packaging structure, and the capacitor unit is connected with the plurality of conductive members via the plurality of conductive leads.