Abstract: A capacitor element having a terminal, an electric insulating material installed to cover the capacitor element, a wire connected to the terminal, and a reinforcing structure installed at the junction for connecting the terminal and the wire. In this constitution, the junction of the terminals and wires maintains mechanical strength and electrical insulation and is enhanced in reliability for a long period against mechanical stress or vibration to the capacitor from outside. Still more, invasion of moisture or dust into the capacitor can be prevented. As a result, the life of the excellent mechanical strength and electrical insulation is enhanced, and the capacitor having a stable reliability for a long time may be obtained.