The PIA4020-1R0YQ from AiT Semiconductor is a Power Inductor with Inductance 1.00 µH, Inductance Tolerance ±30 %, DCR 38.4 milli-ohm, Saturation Current 4100 mA, Temperature Operating Range -40 to 125 Degree C. Tags: Surface Mount. More details for PIA4020-1R0YQ can be seen below.