The LSQNA251818T681K from Taiyo Yuden is a Power Inductor with Inductance 680 µH, Inductance Tolerance ± 10 %, DCR 17000 to 22100 milli-ohm, Saturation Current 30 mA, SRF 3 MHz. Tags: Surface Mount. More details for LSQNA251818T681K can be seen below.