Automotive-grade power inductor for DC-DC filtering
The Murata LQH2HPZ2R2MDRL is a 2.2 µH shielded wirewound inductor in the LQH2 series, qualified to AEC-Q200 for automotive applications. It handles a continuous DC current of 820 mA before the inductance drops, with a maximum DC resistance of 408 mOhm that sets the I²R loss budget for the supply rail. The ferrite core and shielded construction keep magnetic flux contained, reducing radiated EMI into adjacent signal traces on the PCB — a practical concern when the inductor sits near a sensitive analog front-end or CAN transceiver.
Package and temperature envelope
The self-resonant frequency of 50 MHz is well above the switching frequency of most automotive buck converters (typically 400 kHz to 2.2 MHz), so the inductor behaves as a pure inductive element in the passband.