AEC-Q200 qualified 470 nH shielded inductor for automotive power rails
The Murata DFE201612PD-R47M=P2 is a 470 nH shielded drum-core wirewound inductor from the DFE201612P series, rated for 3.2 A continuous with a saturation current of 3.8 A.
DCR and saturation current — the real current-handling limits
The 3.8 A saturation current (Isat) is the point where inductance drops by 30% — in a buck converter, operating above Isat pushes the inductor into hard saturation, causing the current ramp to steepen and the switch-node voltage to collapse. The 0.7 A margin between rated current and saturation gives headroom for transient load steps without saturating the core.
0806 metal-core construction for low-profile power conversion
The 2.00 mm × 1.60 mm footprint with a 1.20 mm seated height fits the 0806 (2016 metric) land pattern. The metal composite core material provides stable inductance over temperature and handles the 3.8 A saturation without the hard saturation characteristic of ferrite cores — the inductance rolls off gradually, which is preferred for automotive DC-DC converters that must survive load dumps and cold-crank events. The shielded construction contains the magnetic flux within the package, so adjacent traces and components on a dense PCB see minimal EMI coupling.