The 30HC566M300GK2A from Barker Microfarads is a Power Capacitor with Capacitance 56 µF, Voltage Rating 300 V, Equivalent Series Resistance (ESR) 2.86 Ohm, Operating Temperature -40 to 105 Degree C. Tags: Through Hole, Polymer Capacitor. More details for 30HC566M300GK2A can be seen below.