150 µH unshielded drum core — the DCR ceiling
The Murata LQH32MN151J23L is a 150 µH unshielded wirewound inductor from the LQH32 series, built on a ferrite drum core. The 9.3 Ohm max DCR is the limiting factor for the 70 mA current rating — at full rated current the resistive loss is just under 46 mW, which is manageable for the 1210 footprint but means this part is a poor fit for any rail that needs to carry the full 70 mA continuously in a tight thermal budget. With a self-resonant frequency of 7 MHz and Q of 40 at 796 kHz, it suits low-frequency filtering and DC bias decoupling in analog or power supply paths where the ripple content sits below a few megahertz. The unshielded construction means the field radiates — keep sensitive traces or other magnetics outside the near-field zone of the 3.2 mm x 2.5 mm body.
1210 footprint and surface-mount integration
The ferrite core material and wirewound construction give it a predictable inductance vs. current curve, but the unshielded body means the PCB layout must account for stray coupling into adjacent planes or signal vias.
Active production — sourcing posture
Murata lists the LQH32MN151J23L as Active. The part is sourced through authorized and independent distribution channels; pricing and lead time are confirmed against the BOM quantity at RFQ time. No pin-compatible second source is identified in the LQH32 family — the ±5% tolerance and 150 µH value are specific to this order code.