1 µH shielded power inductor for DC-DC rails
The Murata DFE201210U-1R0M=P2 is a 1 µH shielded wirewound inductor in the 0805 (2012 metric) footprint, rated for 2 A continuous with a saturation current of 3.1 A. The metal core and drum-core wirewound construction keep DC resistance to 95 mOhm max, which matters when you are pulling close to the current limit — the I²R loss at 2 A is under 0.4 W, manageable for a part this size. Shielded construction means the flux stays inside the core, so you can place this inductor next to sensitive analog or RF circuitry without worrying about coupling.
Current ratings and what they mean for your rail
The 2 A rated current is the DC current the inductor can carry without exceeding its temperature rise limit — typically a 40 °C rise above ambient at rated current. The 3.1 A saturation current (Isat) is where the inductance starts to drop by 30% or more. For a buck converter output, you want the peak inductor current (including ripple) to stay below Isat to avoid losing regulation. The 95 mOhm max DCR sets the conduction loss floor. At 2 A, that is 380 mW of copper loss — factor that into your thermal budget for the 0805 package. The metal core material also helps with saturation margin at high temperatures; ferrite cores lose saturation current as they heat up, but metal-composite cores hold it flatter across the -40 to +125 °C range.