The SDT3316-681M-LF from Coilmaster Electronics is a Power Inductor with Inductance 680 µH, Inductance Tolerance ±20 %, DCR 1150.0 milli-ohm, Saturation Current 0.30 A, SRF 3.0 MHz. Tags: Surface Mount. More details for SDT3316-681M-LF can be seen below.