The CSDB1004N331T from Cal-Chip Electronics is a Power Inductor with Inductance 330 µH, Inductance Tolerance ±30 %, DCR 1090 Mega-ohm, Saturation Current 0.70 A, Temperature Operating Range -40 to 85 Degree C. Tags: Surface Mount. More details for CSDB1004N331T can be seen below.