The 30HC277M6R3BB2A from Barker Microfarads is a Power Capacitor with Capacitance 270 µF, Voltage Rating 6.3 V, Equivalent Series Resistance (ESR) 1.6 Ohm, Operating Temperature -40 to 105 Degree C. Tags: Through Hole, Polymer Capacitor. More details for 30HC277M6R3BB2A can be seen below.