CAPACITOR UNIT

摘要

There is provided a maintenance-free capacitor unit not causing a weight load to a wiring substrate, having a high reliability even under a use condition of strict vibration, not causing a shortcircuit failure even when an explosion-proof valve operates, and having a long service life when used as an emergency power source such as an electronic control brake system. The capacitor unit includes a plurality of capacitors, a wiring substrate where a circuit pattern for connecting the capacitors is formed, and a holder for sandwiching and holding the capacitor.