RLB9012-821KL is a radial leaded inductor from the Bourns RLB9012 series, designed for power supply and DC/DC converter applications. It features an inductance of 820 µH ± 10% measured at 1 kHz, with a Q factor reference of 20 at a test frequency of 0.796 MHz. The inductor has a maximum DC resistance of 1.8 ohms and supports a maximum rated DC current of 0.56 A with only 5% inductance drop. Constructed with a ferrite DR core and enameled copper wire, it operates over a temperature range of -55°C to +125°C. This RoHS compliant component is suitable for general-purpose filtering and energy storage in power electronics.