The CAP ALUM POLY 22UF 20 25V SMD is a type of capacitor that uses aluminum and polymer materials. It has a capacitance value of 22 microfarads and a voltage rating of 25 volts. The capacitor comes in the form factor known as Metric (7343) and has a diameter of 2917, making it suitable for surface mount devices. Its equivalent series resistance is 40 milliohms, and its lifespan is up to 2000 hours at a temperature of 105 degrees Celsius.