The CSDB1004M181T from Cal-Chip Electronics is a Power Inductor with Inductance 180 µH, Inductance Tolerance ±20 %, DCR 631.0 Mega-ohm, Saturation Current 1.03 A, Temperature Operating Range -40 to 85 Degree C. Tags: Surface Mount. More details for CSDB1004M181T can be seen below.