The WSF10D40-3R3MQ from AiT Semiconductor is a Power Inductor with Inductance 3.30 µH, Inductance Tolerance ±20 %, DCR 13.0 mOhm, Saturation Current 7.50 A, Temperature Operating Range -40 to 125 Degree C. Tags: Surface Mount. More details for WSF10D40-3R3MQ can be seen below.