{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LQH32MN1R5K23L","brand":"Murata Electronics","brandSlug":"murata-electronics","productSlug":"LQH32MN1R5K23L","canonicalUrl":"https://icboms.com/murata-electronics/LQH32MN1R5K23L","factsUrl":"https://icboms.com/api/mcp/products/LQH32MN1R5K23L","rawCanonicalId":null},"summary":{"shortDescription":"Murata Electronics LQH32 series, Drum Core Wirewound, Unshielded, 1.5 µH, ±10%, 400 mA, 600mOhm Max, 1210 (3225 Metric), Surface Mount.","salesMarkdown":"## 1.5 µH, 400 mA — the DC bias ceiling and the self-resonant floor The Murata LQH32MN1R5K23L is a 1.5 µH drum-core wirewound inductor in the LQH32 series, built on a ferrite core. The 400 mA current rating is the DC bias limit — push past it and the inductance collapses as the core saturates, so the real-world ceiling for a power rail filter is that 400 mA, not the peak current the load draws in a transient. The self-resonant frequency sits at 75 MHz, which sets the usable bandwidth: below that the part behaves as an inductor; above it the parasitic capacitance dominates and the impedance turns capacitive. For a 1.5 µH value, 75 MHz SRF is typical of a wirewound construction at this footprint — the winding capacitance and core losses define the roll-off. ## Unshielded construction — placement matters This is an unshielded inductor. The magnetic field radiates from the drum core, so adjacent traces, ground pours, and especially other magnetics within a few millimetres will couple. For a 1.5 µH part in a 1210 footprint, keep a keep-out zone of at least one part width around it unless the layout is in a shielded compartment or the coupling is benign (e.g., the inductor is in a low-impedance filter and the neighbour is a DC line). The unshielded construction means the magnetic field extends beyond the package boundary, so a shielded sibling (LQH32P series, same footprint) would be the drop-in replacement if EMI coupling becomes an issue during EMC pre-compliance. Because the part is active and the LQH32 series is a long-running Murata line, the risk of an abrupt EOL notice is low for the foreseeable future. The 1210 footprint and 1.5 µH value are common enough that a second-source parametric match (same inductance, current rating, DCR, and SRF) exists from other manufacturers if a dual-source BOM hedge is required.","metaTitle":"Murata LQH32MN1R5K23L 1.5 µH Unshielded Inductor, 400 mA","metaDescription":"Murata LQH32MN1R5K23L drum core wirewound inductor, 1.5 µH ±10%, 400 mA, 600 mΩ DCR, 75 MHz SRF. Active lifecycle, surface mount 1210. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Inductors & Chokes"],"specifications":{"Mfr":"Murata Electronics","Type":"Drum Core, Wirewound","Series":"LQH32","Package":"Tape & Reel (TR) Cut Tape (CT)","Ratings":"-","Q @ Freq":"20 @ 1MHz","Shielding":"Unshielded","Tolerance":"±10%","Inductance":"1.5 µH","Mounting Type":"Surface Mount","Package / Case":"Nonstandard","Product Status":"Active","Material - Core":"Ferrite","lifecycle_stage":"unknown","Size / Dimension":"0.126\\\" L x 0.098\\\" W (3.20mm x 2.50mm)","Base Product Number":"LQH32MN","DC Resistance (DCR)":"600mOhm Max","Current Rating (Amps)":"400 mA","Height - Seated (Max)":"0.087\\\" (2.20mm)","Operating Temperature":"-40°C ~ 85°C","Supplier Device Package":"1210 (3225 Metric)","Frequency - Self Resonant":"75MHz","Current - Saturation (Isat)":"-","Inductance Frequency - Test":"1 MHz"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.3000","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/cfd82089124c69e5e21a12ea773111de.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the self-resonant frequency of LQH32MN1R5K23L and why does it matter?","answer":"The self-resonant frequency is 75 MHz. Above this frequency the inductor behaves capacitively, so the part is usable as an inductor only below 75 MHz. For a 1.5 µH value in a DC-DC converter switching at, say, 2 MHz, the SRF is far above the switching frequency and the inductor maintains its inductive impedance."},{"question":"What is the DC resistance of LQH32MN1R5K23L and how does it affect efficiency?","answer":"The maximum DCR is 600 mΩ. At the rated 400 mA DC current, the I²R loss is 96 mW. In a low-power rail (e.g., 3.3 V at 400 mA, ~1.3 W output), this represents about 7 % loss in the inductor alone — acceptable for many designs but worth derating if the ambient temperature is near the 85°C upper limit."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/murata-electronics/LQH32MN1R5K23L","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/murata-electronics/LQH32MN1R5K23L when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}