The CSDB1004N270T from Cal-Chip Electronics is a Power Inductor with Inductance 27 µH, Inductance Tolerance ±30 %, DCR 83.0 Mega-ohm, Saturation Current 2.80 A, Temperature Operating Range -40 to 85 Degree C. Tags: Surface Mount. More details for CSDB1004N270T can be seen below.