Inductance, current rating, and DCR for power rail filtering
The LQH32CNR15M33L is a 150 nH drum core wirewound inductor from Murata's LQH32 series, rated for 1.45 A continuous current with a maximum DC resistance of 36.4 mOhm. The 400 MHz self-resonant frequency means the inductor behaves as an inductor well above the switching frequency of most DC-DC converters (typically 500 kHz to 2 MHz), so the effective inductance at the switching fundamental is close to the 150 nH nominal value. Above SRF the impedance turns capacitive — a consideration if the rail carries high-frequency ripple beyond 400 MHz.
1210 footprint and board integration
The unshielded drum core construction means magnetic flux radiates outside the body — keep sensitive traces or other magnetics at least one body width away to avoid coupling. The ferrite core material handles the 150 nH value with ±20% tolerance; the actual inductance at the test frequency of 1 MHz is the nominal value.