The SEP0402E-3R3M-LF from Coilmaster Electronics is a Power Inductor with Inductance 3.3 µH, Inductance Tolerance ±20 %, DCR 87.0 milli-ohm, Saturation Current 4.0 A, Temperature Operating Range -55 to 120 Degree C. Tags: Surface Mount. More details for SEP0402E-3R3M-LF can be seen below.