The B25620B1277K503 from TDK Corporation is a Power Capacitor with Capacitance 270 uF, Voltage Rating 1500 V, Peak Current 4100 A, Equivalent Series Resistance (ESR) 1.8 mOhm, Inductance 40 nH. Tags: Stud Mount, Film Capacitor. More details for B25620B1277K503 can be seen below.