ELECTROLYTIC CAPACITOR

An electrolytic capacitor which is provided with a capacitor element, a case that houses the capacitor element, and an insulating first heat emission layer that is arranged so as to cover at least a part of the capacitor element. The thermal conductivity gamma C of the case in the thickness direction is 1 W/mK or more; and the thermal emissivity Epsilon1 of the first heat emission layer is 0.7 ormore. The first heat emission layer may be arranged on the inner surface of the case so as to cover at least a part of the inner surface, which faces the capacitor element; or alternatively, the firstheat emission layer may be arranged on the surface of the capacitor element so as to cover at least a part of the surface. Consequently, the present invention provides an electrolytic capacitor whichhas high heat dissipation properties. 电解电容器，具备：电容器元件；容纳所述电容器元件的壳体；和被配置为覆盖所述电容器元件的至少一部分的绝缘性的第1热辐射层，所述壳体的厚度方向的热传导率λ是1W/m·K以上，所述第1热辐射层的热辐射率ε是0.7以上。所述第1热辐射层可以在所述壳体的与所述电容器元件对置的内表面，被配置为覆盖其至少一部分，也可以在所述电容器元件的表面，被配置为覆盖其至少一部分。由此，提供一种具备较