77F471J-TR-RC is a conformal coated RF choke inductor from the Bourns 77F Series, designed for DC/DC converters, power supplies, and general RF applications. The device features an inductance of 470 µH with ±5% tolerance, a DC resistance of 8.5 O maximum, and a maximum DC current rating of 126 mA. It operates over a temperature range of -55°C to +105°C with a self-resonant frequency of 1.8 MHz and a quality factor (Q) of 50 at the test frequency. The inductor utilizes a ferrite core with polyester copper wire and is terminated with Sn-Ag-Cu alloy coating, all encapsulated in epoxy resin for environmental protection. This RoHS-compliant component is ideal for filtering and energy storage in compact power management circuits where reliable performance and conformal coating protection are required.