The CAP ALUM POLY HYB 100UF 25V SMD is a type of capacitor that features an aluminum-polymer hybrid construction. It has a capacitance rating of 100 microfarads and operates at a maximum voltage of 25 volts. This component is designed in a surface-mount device (SMD) format with radial leads, making it suitable for use in various electronic applications. The capacitor also boasts a high reliability factor, with an endurance of up to 4000 hours at an operating temperature of 125 degrees Celsius, and has a low ESR (equivalent series resistance) of 50 milliohms.