The utility model relates to an industry electronic instrument field, concretely relates to do benefit to radiating condenser, including capacitor body, the capacitor body overcoat is equipped with the columniform casing, the last electrode pin that is provided with of capacitor body, still be provided with the closing cap on the casing, electrode pin one end sets up capacitor body is last, and the other end passes the closing cap is located outside the casing, the casing lateral wall is the helical corrugation form, and wall thickness that trough department corresponds is less than the wall thickness that crest department corresponds, be provided with the endotheca in the casing, the endotheca opens for the upper end, lower extreme confined tubular structure, the inner wall of endotheca with capacitor body cooperatees, the outer wall of endotheca with exist gappedly between the shells inner wall. At the capacitor structure of this application, not only have good radiating effect, but also have good structural strength.