1.5 µH, 1.7 A, 2 A Isat — the three numbers that size this choke
The DFE201612PD-1R5M=P2 is a shielded wirewound power inductor from Murata's DFE201612P series, built on a metal composite core in the compact 0806 (2016 metric) footprint. Its 1.5 µH inductance at 1 MHz test frequency, combined with a 1.7 A continuous current rating and a 2 A saturation current floor, defines the DC-DC converter operating point — the inductor must stay below Isat at peak load current to avoid a hard inductance roll-off that collapses the output voltage. The 98 mOhm max DC resistance sets the I²R conduction loss: at 1.7 A the resistive loss is 283 mW, which the 0806 body must dissipate without exceeding the 125°C rated ambient. The metal composite core runs cooler than ferrite at high ripple frequencies because the core loss is distributed across the metal particles rather than concentrated in a gap. That grade is the reason the DFE201612P series carries a higher unit cost than a generic 0806 shielded inductor; the trade-off is warranted in an engine-bay ECU or a transmission controller where a field failure means a warranty pull.