The CAP ALUM POLY 100UF 20 16V SMD is a type of capacitor that uses an aluminum-polymer construction. It has a radial configuration and can be mounted in surface mount technology (SMD) applications. This component offers high capacitance values up to 100 microfarads, with a maximum working voltage of 16 volts. Its low ESR (Equivalent Series Resistance) is approximately 24 milliohms, making it suitable for various electronic circuits. Additionally, the capacitor has an extended lifespan of up to 5000 hours at a temperature of 105 degrees Celsius.