10 µH shielded power inductor for DC-DC rails
The Murata DFE252008U-100M=P2 is a 10 µH shielded wirewound inductor in the DFE252008U series, built for surface-mount power-stage filtering where the 600 mA continuous rating and 1 A saturation ceiling define the load envelope.
Current rating vs saturation — which one governs your rail
The 600 mA current rating is the thermal limit at rated ambient; the 1 A saturation current (Isat) is the point where inductance drops by 30% typical. For a buck-converter output choke, the peak inductor current during load transients must stay below Isat, not the DC rating — a 12 V to 3.3 V rail at 500 mA load may see 700 mA peaks that still clear the 1 A ceiling. The iron-powder core material gives a soft saturation curve — inductance rolls off gradually above Isat rather than collapsing abruptly, which helps in designs where the current overshoot is brief and the downstream cap bank absorbs the ripple.
1008 footprint and board integration
The shielded construction contains the magnetic flux within the core — adjacent traces on a 4-layer board running 1 MHz switching edges will see minimal coupling, so the layout can route the feedback sense line closer to the inductor than an unshielded part would allow.