{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LQH31MN390K03L","brand":"Murata Electronics","brandSlug":"murata-electronics","productSlug":"LQH31MN390K03L","canonicalUrl":"https://icboms.com/murata-electronics/LQH31MN390K03L","factsUrl":"https://icboms.com/api/mcp/products/LQH31MN390K03L","rawCanonicalId":null},"summary":{"shortDescription":"Murata Electronics LQH31 series, Drum Core Wirewound Inductor, 39 µH, ±10%, 55 mA, 9.36 Ohm DCR, Unshielded, 1206 (3216 Metric) SMD, Tape & Reel.","salesMarkdown":"## Unshielded ferrite core — SRF and Q factor The LQH31MN390K03L: The unshielded ferrite core yields a self-resonant frequency of 11 MHz and a Q factor of 40 at 2.5 MHz — the SRF marks the upper frequency limit where the inductor behaves capacitively, so this part suits filtering and DC-DC output smoothing below roughly 1-2 MHz where the Q peak is useful. Inductance is tested at 1 MHz, confirming the value holds in the low-MHz switching range common for small-signal power rails and LC filters.","metaTitle":"Murata LQH31MN390K03L 39 µH Unshielded Inductor, 55 mA","metaDescription":"Murata LQH31MN390K03L drum core wirewound inductor, 39 µH ±10%, 55 mA, 9.36 Ohm DCR, 1206 SMD. Active production, sourced per RFQ.","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":"LQH31","Package":"Tape & Reel (TR)","Ratings":"-","Q @ Freq":"40 @ 2.5MHz","Shielding":"Unshielded","Tolerance":"±10%","Inductance":"39 µH","Mounting Type":"Surface Mount","Package / Case":"1206 (3216 Metric)","Product Status":"Active","Material - Core":"Ferrite","lifecycle_stage":"unknown","Size / Dimension":"0.126\\\" L x 0.063\\\" W (3.20mm x 1.60mm)","Base Product Number":"LQH31MN","DC Resistance (DCR)":"9.36Ohm Max","Current Rating (Amps)":"55 mA","Height - Seated (Max)":"0.079\\\" (2.00mm)","Operating Temperature":"-40°C ~ 85°C","Supplier Device Package":"1206","Frequency - Self Resonant":"11MHz","Current - Saturation (Isat)":"-","Inductance Frequency - Test":"1 MHz"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.3023","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/23793266b202ae546e5047be20f0e556.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LQH31MN390K03L/alternatives.json"},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to LQH31MN390K03L in this Inductors & Chokes family?","answer":"The LQH31 series includes other inductance values in the same 1206 footprint, but a direct parametric substitute for 39 µH at 55 mA with the same DCR and SRF would require a cross-reference search at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/murata-electronics/LQH31MN390K03L","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/murata-electronics/LQH31MN390K03L 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}}