The specified capacitors are CAP ALUM POLY 47UF 20 6.3V SMD, a type of aluminum-polymer capacitor with a capacitance of 47 microfarads and a voltage rating of 6.3 volts. They feature a metric size code of 2917 (or 7343), an equivalent resistance of 18 milliohms, and are designed to withstand temperatures up to 105 degrees Celsius for a duration of 1000 hours.