The SMP1210S-121K from Gowanda Electronics is a Power Inductor with Inductance 1.2 µH, Inductance Tolerance 0.1, DCR 130 milli-ohm, Saturation Current 1273 mA, Temperature Operating Range -55 to 125 Degree C. Tags: Surface Mount. More details for SMP1210S-121K can be seen below.