The 30D186M450FK2A from Barker Microfarads is a Power Capacitor with Capacitance 18 µF, Voltage Rating 400 V, Equivalent Series Resistance (ESR) 7.8 Ohm, Operating Temperature -40 to 105 Degree C. Tags: Through Hole, Polymer Capacitor. More details for 30D186M450FK2A can be seen below.