This is an API Delevan S1210R-222J/R500 inductor. It is a surface mount, high current, radial leaded, power toroid core with a rated current of 30 amps, an inductance of 0.222 mH, and resistance of 0.50 ohms. It features a epoxy end-filled construction for consistent performance and board mounting. This inductor is designed for applications requiring a high-current, adjustable, space-saving solution, such as DC-DC converters and power inverters.