The CDB0420M3R3T from Cal-Chip Electronics is a Power Inductor with Inductance 3.3 µH, Inductance Tolerance ±20 %, DCR 87 milli-ohm, Saturation Current 4 A, Temperature Operating Range -20 to 125 Degree C. Tags: Surface Mount. More details for CDB0420M3R3T can be seen below.