1 µH shielded power inductor — 2.7 A rated, 60 mOhm DCR
The Murata DFE21CCN1R0MELL is a 1 µH drum-core wirewound inductor from the DFE21CCN_EL series, shielded construction in an 0805 (2012 Metric) surface-mount package. Rated for 2.7 A continuous with a saturation current of 3.3 A (Isat) — the 3.3 A ceiling means the inductance holds flat up to that current before rolling off, so a power rail pulling 2.5 A still sees the full 1 µH.
DCR and saturation — the so-what for a power rail
Maximum DC resistance is 60 mOhm — at 2.7 A the I²R loss is 437 mW, which the 0805 body dissipates into the board copper; the metal core helps pull heat out through the pads. The 3.3 A saturation current (Isat) is the point where inductance drops by roughly 30 % — for a buck converter output filter, keep the peak inductor current below 3.3 A to avoid ripple-current runaway.