What this 5.6 µH shielded inductor brings to the BOM
The Murata DFEH10040D-5R6M=P3 is a 5.6 µH shielded power inductor in the DFEH10040D series, built on an iron powder core. It carries an 8 A continuous current rating and a 9.2 A saturation current floor, meaning the inductance holds up under load until the current exceeds that saturation point — a key margin figure for DC-DC converter designs that must not lose inductance during a transient. With a maximum DC resistance of 18 mOhm, the I²R loss at 8 A is about 1.15 W — the thermal budget needs that accounted for in the board layout, especially given the 155 °C upper operating limit.
AEC-Q200 qualification and the 155 °C ceiling
Rated AEC-Q200, this inductor passed the automotive-grade stress tests: thermal shock, vibration, moisture resistance, and bias humidity at the component level. The -40 °C to +155 °C operating range covers under-hood and transmission-bay ambient temperatures with headroom for self-heating. The iron powder core material saturates more softly than ferrite — the inductance rolls off gradually past the saturation current rather than dropping off a cliff, which gives the power-stage controller time to respond without an overcurrent trip.
Obsolete — sourcing through independent channels
Murata has marked the DFEH10040D-5R6M=P3 as obsolete. Available through independent surplus and broker channels. Quantities are lot-specific; pricing and availability confirmed at the time of RFQ.