The CAP ALUM POLY HYB 390UF 35V SMD is a type of capacitor that features aluminum-polymer hybrid construction. It has a capacitance value of 390 microfarads and can withstand a maximum voltage of 35 volts. This component is specifically designed for surface mount technology (SMD) applications, with a radial, can design suitable for various electronics projects. Additionally, it boasts low resistance at 20 milliohms and a long lifespan of 4000 hours when operated at 125 degrees Celsius.