Component identity and key parametrics
The LQH3NPN251MGRL is a Murata LQH3 series drum-core, wirewound inductor with ferrite core and full magnetic shielding. Rated 250 µH ±20% at 1 MHz test frequency, with a self-resonant frequency of 2 MHz — the inductance holds flat well below SRF, but above 2 MHz the component behaves capacitively and should be avoided in filter designs targeting that band. DC resistance is 9.6 Ohm maximum; at the 140 mA rated current the I²R loss reaches roughly 188 mW, which for a 1212 body means the temperature rise is dominated by the copper loss at full load. Saturation current is specified at 110 mA — the inductance drops by 20 % at that point, so for applications requiring the full 250 µH under bias, the operating current should stay below 110 mA.
Lifecycle and supply position
Murata lists the LQH3NPN251MGRL as Last Buy — the manufacturer has announced end-of-life and will accept final orders within a defined window. No official successor order code is recorded in the lifecycle data. For existing BOM lines, the last-time-buy quantity should cover the remaining production run; for new designs, a pin-compatible 250 µH shielded inductor in the 1212 footprint from the same or a competing series should be evaluated.