Power inductor for automotive and industrial DC-DC converters
The Murata DFE252012PD-R68M=P2 is a shielded drum-core wirewound inductor in the 1008 (2520 Metric) footprint, delivering 680 nH ±20% with a continuous current rating of 3.5 A and a saturation current floor of 4.3 A. The 37 mOhm max DCR keeps conduction losses low in point-of-load regulators and switching converters. The metal composite core handles the saturation current without the permeability collapse typical of ferrite cores under DC bias.
Current handling and DC resistance trade-off
Rated 3.5 A continuous with a saturation current of 4.3 A — the inductor saturates gradually above the continuous rating, so a 3.3 V rail drawing 3 A at 1 MHz has margin before the inductance drops below the 680 nH tolerance band. The 37 mOhm DCR contributes roughly 0.39 W of I²R loss at full load, which the 1008 body dissipates without exceeding the 125°C ceiling in still air. Shielded construction contains the magnetic flux within the package — critical when the inductor sits adjacent to a sensitive ADC or RF front-end on the same board layer.