145 nH at 700 mA — RF decoupling and resonant tank fit
The LQH31HNR14J03L is a drum core wirewound inductor from Murata's LQH31 series, offering 145 nH inductance with ±5% tolerance. Rated for 700 mA continuous current, it suits power-supply decoupling and resonant circuits in the VHF band.
Q and self-resonance — what they mean for filter design
A Q factor of 60 at 100 MHz indicates a tight, low-loss resonance — useful for narrowband impedance matching or LC tank circuits where the inductor's series resistance dominates the bandwidth. The self-resonant frequency of 500 MHz marks the upper bound for inductive behaviour; above this frequency the part behaves capacitively. For a 145 nH inductor, that leaves a wide useful band up to several hundred MHz.
The ferrite core construction handles the 700 mA without saturating, and the wirewound geometry delivers the Q needed for RF-stage decoupling.