470 nH shielded power inductor — 3.8 A continuous, 5.4 A saturation
The Murata DFE201610R-H-R47M=P2 is a 470 nH shielded wirewound inductor in the DFE201610R series, built on an iron powder drum core. It delivers 3.8 A continuous current with a DCR of 26 mOhm max, and the saturation current is rated at 5.4 A — the point where inductance drops by 30% typically.
Sourcing reality — obsolete, no direct replacement on record
This part is marked obsolete by Murata.
What the ratings mean for your power rail
The 3.8 A continuous current rating is the thermal limit at 25°C ambient — the DCR of 26 mOhm produces I²R losses of about 375 mW at full current, which the 0806 body must dissipate. Derate for higher ambient temperatures per the standard power inductor derating curve. The 5.4 A saturation current is the peak current before inductance falls off. In a buck converter, the inductor sees the sum of DC load current and inductor ripple current — keep the peak below 5.4 A to maintain the 470 nH value. The iron powder core gives a soft saturation characteristic, so the inductance rolls off gradually rather than collapsing abruptly. Shielding reduces radiated EMI from the magnetic field — important when the inductor sits near sensitive analog or RF traces on a dense PCB.