The CSDB1004N1R3T from Cal-Chip Electronics is a Power Inductor with Inductance 1.3 µH, Inductance Tolerance ±30 %, DCR 8.0 Mega-ohm, Saturation Current 10.0 A, Temperature Operating Range -40 to 85 Degree C. Tags: Surface Mount. More details for CSDB1004N1R3T can be seen below.