The WSF10D40-R33YQ from AiT Semiconductor is a Power Inductor with Inductance 0.33 µH, Inductance Tolerance ±30 %, DCR 4.2 mOhm, Saturation Current 12.0 A, Temperature Operating Range -40 to 125 Degree C. Tags: Surface Mount. More details for WSF10D40-R33YQ can be seen below.