2.2 µH, 1.8 A — the saturation headroom is the real selection gate
The DFE201612E-2R2M=P2: Rated current is 1.8 A, but the saturation current (Isat) is 2.4 A — a 33% margin above the continuous rating. That headroom matters when the inductor sees transient load steps in a buck converter: the core does not saturate until the peak current exceeds 2.4 A, so the inductance holds up during the transient. The 116 mOhm max DCR sets the I²R conduction loss. At 1.8 A DC, that is 376 mW self-heating — within the 125°C rated ambient if the PCB copper area provides adequate thermal relief. Inductance tolerance is ±20%, so the minimum inductance at rated current is 1.76 µH. A downstream regulator with a minimum inductance requirement must budget for this spread.
Metal core, 125°C ceiling — temperature stability advantage
The metal composite core (Material - Core: Metal) gives this inductor a flatter inductance-versus-temperature curve than ferrite-core parts. Shielded construction (Shielding: Shielded) contains the magnetic flux, reducing radiated EMI that could couple into adjacent signal traces or the regulator's feedback path. This is a practical advantage in a dense 0806 layout where the inductor sits close to the IC.
0806 footprint — board-fit and procurement notes
The low profile fits under a 2 mm board-to-board clearance or a low-profile enclosure. Available in Tape & Reel (TR) or Cut Tape (CT) packaging. The TR option is the standard production reel for pick-and-place; CT is for prototype or small-batch builds. No special pad geometry is required beyond the usual 0806 land pattern.