The CSDB1005N681T from Cal-Chip Electronics is a Power Inductor with Inductance 680 µH, Inductance Tolerance ±30 %, DCR 1599 Mega-ohm, Saturation Current 0.43 A, Temperature Operating Range -40 to 85 Degree C. Tags: Surface Mount. More details for CSDB1005N681T can be seen below.