The FE37FP6B0406JB from Kyocera AVX is a Power Capacitor with Capacitance 40.0 uF, Voltage Rating 800 V, Peak Current 1400 A, Equivalent Series Resistance (ESR) 2.5 mOhm, Inductance 30 nH. Tags: Through Hole, Film Capacitor. More details for FE37FP6B0406JB can be seen below.