The LSQNA251818T221K from Taiyo Yuden is a Power Inductor with Inductance 220 µH, Inductance Tolerance ± 10 %, DCR 4500 to 5850 milli-ohm, Saturation Current 50 mA, SRF 5.5 MHz. Tags: Surface Mount. More details for LSQNA251818T221K can be seen below.