Why the 3.8 A saturation current matters more than the 2.5 A rating
The DFE252010F-1R5M=P2 is a shielded power inductor from Murata's DFE252010F series, built with an iron powder core. It delivers 1.5 µH ±20% inductance, rated for 2.5 A continuous current, but the saturation current (Isat) hits 3.8 A — meaning the inductor can handle short-duration current spikes well above the DC bias without the inductance collapsing. In a buck converter feeding a 2 A load, the peak inductor current during a load transient can exceed the DC rating; the 3.8 A Isat gives margin before the core saturates and the ripple current runs away.
DCR and temperature: the thermal budget check
Maximum DC resistance is 72 mOhm — at 2.5 A, that's a copper loss of 0.45 W. The 1008 package (2.5 mm x 2.0 mm) with a 1.0 mm seated height has limited surface area to shed heat, so the 125°C upper operating limit includes self-heating. If the board ambient is 85°C, the 40°C headroom constrains how close to the 2.5 A rating you can run continuously.
Active production — sourcing posture
Stock is available through authorized distribution; we can quote to your BOM quantity — just send an RFQ. Tape & Reel or Cut Tape packaging options cover both production reels and prototype qty.