The 121KM5002SM from Gowanda Electronics is a Power Inductor with Inductance 50 µH, DCR 30 milli-ohm, Saturation Current 2300 to 4000 mA, SRF 4 MHz, Temperature Operating Range -55 to 130 Degree C. Tags: Surface Mount. More details for 121KM5002SM can be seen below.