15 µH, 2.2 A — what the ratings mean for fit
The DFEH7030D-150M=P3 is a shielded surface-mount power inductor from Murata's DFEH7030D series, rated 15 µH ±20% at 100 kHz. The 2.2 A continuous current rating is the RMS current the inductor can carry without exceeding its temperature rise limit. Above that, the 3.2 A saturation current (Isat) marks the point where inductance drops by 30% typical — for a DC-DC converter, the peak inductor current during transients must stay under this ceiling to avoid losing regulation. The 147 mOhm max DCR contributes directly to I²R conduction loss: at 2.2 A, the DC loss is 0.71 W, which drives the temperature rise inside the shield. In a 85°C ambient, the part's 155°C maximum operating temperature leaves about 70°C headroom for self-heating — enough for most automotive and industrial loads, but a thermal derating check is needed if the board runs near 125°C.
AEC-Q200 and the NRND lifecycle reality
For an existing BOM line, this is a flag to secure inventory for the remaining production run; for a new design, a pin-compatible replacement from the same DFEH7030D series should be evaluated before committing the layout.
The iron powder core and full shield mean the part is magnetic — keep it away from sensitive inductors or magnetics that could cross-couple.
Sourcing posture for the DFEH7030D-150M=P3
Given the NRND status, this part is not being recommended for new designs by Murata. For existing BOMs, we source this inductor through independent distribution channels — quantities are confirmed at RFQ, and the lot traceability and date codes are provided with each shipment.