15 µH wirewound inductor for DC-DC filtering and bias decoupling
The Murata LQH32MN150K23L is a drum core wirewound inductor in the LQH32 series, delivering 15 µH ±10% inductance in a 1210 (3225 metric) surface-mount package. Rated for 170 mA continuous DC current with a maximum DC resistance of 2.2 Ω — the I²R loss at full rated current is about 64 mW, well within the part's dissipation capability in free air. The ferrite core and unshielded construction mean the magnetic field radiates from the component — keep sensitive traces or adjacent inductors at least one part-width away to avoid coupling.
Frequency response and Q factor
Self-resonant frequency is 16 MHz — above this point the inductor behaves capacitively, so the useful filtering band stops well below that ceiling. A Q of 35 at 1 MHz (the test frequency) indicates moderate AC loss, typical for a ferrite-core drum in this inductance range.