The 040KM2503SM from Gowanda Electronics is a Power Inductor with Inductance 250 µH, DCR 360 milli-ohm, Saturation Current 250 to 480 mA, SRF 2.5 MHz, Temperature Operating Range -55 to 130 Degree C. Tags: Surface Mount. More details for 040KM2503SM can be seen below.