15 µH shielded power inductor for automotive and industrial DC-DC rails
The Murata LQH2HPZ150MDRL is a 15 µH wirewound drum-core inductor in the LQH2 series, built on a ferrite core and fully shielded to contain flux leakage. The 290 mA continuous current rating and 340 mA saturation floor define the usable load range for a buck converter output filter or a low-current supply rail.
Inductance, current, and DCR — the three numbers that decide the fit
At 15 µH ±20% tested at 1 MHz, this inductor suits switching frequencies around 1–3 MHz where the ripple current stays within the 290 mA RMS rating. The 3 Ohm max DCR at 25°C produces 0.25 W of copper loss at full rated current — a manageable thermal rise inside a 1008 body. The saturation current of 340 mA is the hard ceiling: beyond this the ferrite core saturates and the inductance falls off rapidly. A power-stage design should keep the peak inductor current below 340 mA even during start-up transients, otherwise the output ripple rises and the loop may lose regulation. Self-resonant frequency is 25 MHz, well above the typical 1–3 MHz switching band, so the inductor behaves as a pure inductance in the intended operating range rather than showing capacitive parasitics.
1008 footprint and reflow integration
Surface-mount, tape-and-reel packaging (Cut Tape or TR) supports standard pick-and-place. The shielded ferrite drum construction reduces coupling into adjacent traces, which matters when the inductor sits close to a sensitive analog or RF circuit on the same board.