{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LQH32MN390J23L","brand":"Murata Electronics","brandSlug":"murata-electronics","productSlug":"LQH32MN390J23L","canonicalUrl":"https://icboms.com/murata-electronics/LQH32MN390J23L","factsUrl":"https://icboms.com/api/mcp/products/LQH32MN390J23L","rawCanonicalId":null},"summary":{"shortDescription":"Murata Electronics LQH32 series drum core wirewound inductor, 39 µH ±5%, 110 mA, 3.9 Ohm DCR max, unshielded, 1210 (3225 metric) footprint, ferrite core.","salesMarkdown":"## 39 µH at 110 mA — DC bias and self-heating check The LQH32MN390J23L is a 39 µH drum core wirewound inductor from Murata's LQH32 series, rated for 110 mA continuous current. ## Q factor and self-resonant frequency — usable band A minimum Q of 40 at 1 MHz and a self-resonant frequency of 11 MHz define the useful operating band. Below SRF the inductor behaves as an inductor; above it the parasitic capacitance dominates and the impedance rolls off. For a 39 µH part, 11 MHz SRF is typical for this core geometry — it means the inductor is clean for switching frequencies up to roughly 1-2 MHz, where the Q is still high and the impedance is inductive. ## 1210 footprint and unshielded construction — layout considerations Unshielded drum core means the magnetic field extends beyond the body; keep sensitive traces, ground planes, or adjacent magnetics at least one part-width away to avoid coupling. The ferrite core material is specified, so the inductance curve vs DC bias is typical for a ferrite drum — expect the inductance to drop off above the rated current.","metaTitle":"Murata LQH32MN390J23L 39 µH Drum Core Inductor, 110 mA","metaDescription":"Murata LQH32MN390J23L drum core wirewound inductor, 39 µH ±5%, 110 mA rated current, 3.9 Ohm DCR max, 1210 footprint. Active production, 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)","Ratings":"-","Q @ Freq":"40 @ 1MHz","Shielding":"Unshielded","Tolerance":"±5%","Inductance":"39 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)":"3.9Ohm Max","Current Rating (Amps)":"110 mA","Height - Seated (Max)":"0.087\\\" (2.20mm)","Operating Temperature":"-40°C ~ 85°C","Supplier Device Package":"1210","Frequency - Self Resonant":"11MHz","Current - Saturation (Isat)":"-","Inductance Frequency - Test":"1 MHz"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.1278","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/cfd82089124c69e5e21a12ea773111de.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the inductance tolerance and test frequency?","answer":"The nominal inductance is 39 µH with a ±5% tolerance, tested at 1 MHz. The tighter tolerance band (±5% vs the more common ±10% or ±20%) makes this part suitable for tuned circuits or filters where the absolute inductance value matters."},{"question":"What is the self-resonant frequency and Q factor?","answer":"The self-resonant frequency is 11 MHz, and the minimum Q factor is 40 at 1 MHz. The SRF sets the upper frequency limit where the inductor still behaves as an inductive element; above 11 MHz the parasitic capacitance dominates."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/murata-electronics/LQH32MN390J23L","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/murata-electronics/LQH32MN390J23L 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}}