Shielded wirewound inductor for automotive power rails
The Murata DFE2HCAH2R2MJ0L is a shielded drum-core wirewound inductor in the DFE2H series, rated 2.2 µH ±20% with a continuous current of 1.9 A and a saturation current of 2.5 A.
Parametric fit for power-stage filtering
Inductance is tested at 1 MHz, which aligns with the switching frequencies typical of automotive buck converters in the 400 kHz to 2 MHz range — the core material (metal) maintains inductance under DC bias up to the 2.5 A saturation point. The shielded construction contains the magnetic flux within the core, reducing radiated EMI to adjacent traces and components — important for passing CISPR 25 conducted emissions in an ECU layout.
Package and board integration
The metal composite core and shielded winding allow placement near sensitive analog or RF circuitry without coupling noise into the signal path.