What the 670 mA rating means for your power rail
The LQH43PB8R2M26L is a Murata drum-core wirewound inductor with a rated current of 670 mA and a saturation current of 1.1 A. The 670 mA figure is the DC current at which the inductance typically drops by 10% from the 8.2 µH nominal value — the real operating limit for a regulator output filter or a DC-DC input choke. The 153.6 mOhm max DCR sets the I²R loss: at 670 mA the copper loss is about 69 mW, which is manageable for a 1812 body but worth checking against the board's thermal budget if the inductor sits near other heat sources.
Shielded ferrite core and self-resonant frequency
The shielded ferrite construction keeps the magnetic field contained — useful when the inductor is placed close to sensitive analog traces or RF sections. The self-resonant frequency is 1 MHz, meaning the inductor behaves inductively up to roughly that frequency; above it the parasitic capacitance dominates and the impedance rolls off. The 8.2 µH value is tested at 1 MHz, which is within the inductive region. For switching converters running at 500 kHz to 1 MHz, this part sits in the sweet spot where the core losses are still low and the inductance holds steady.
Board-fit and production status
The 1812 (4532 Metric) footprint is a standard size for power inductors — the pick-and-place machine handles it without special nozzles, and the 2.80 mm seated height fits typical 1.6 mm PCB stack-ups with clearance.