240 nH at 3.5 A — the DC-DC rail inductor for a 0603 footprint
The Murata DFE18SANR24MG0L is a 240 nH shielded power inductor in the 0603 (1608 metric) package, rated for 3.5 A continuous with a saturation current floor of 4.9 A. The 30 mOhm max DCR keeps conduction losses under 370 mW at full rated current — manageable for a 1.00 mm seated-height part on a standard PCB without forced airflow.
The metal composite core delivers a soft saturation characteristic — inductance rolls off gradually past 4.9 A rather than collapsing abruptly, which is useful for converter designs that see transient peaks above the DC rating. The full shield contains the flux within the package body, reducing radiated EMI into adjacent traces or sensitive analog circuits on the same board layer. Inductance is tested at 1 MHz, the standard frequency for power inductor characterisation in the 100 kHz to 2 MHz switching range typical of point-of-load converters.
This is a standard catalog part in the DFE18SAN series, suitable for ongoing production builds without a forced redesign window. Temperature range spans -40°C to 85°C, covering industrial control cabinets, outdoor telecom enclosures, and automotive cabin environments (non-engine bay). The metal core maintains stable inductance across this band better than ferrite alternatives, which lose permeability below -20°C and saturate earlier at elevated temperature.
Sourcing and board-fit checklist
Supplied in Tape & Reel (TR) or Cut Tape (CT) packaging — the reel format is the standard for pick-and-place assembly; cut tape suits prototype or low-volume builds.