{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LQH31MN2R2K03L","brand":"Murata Electronics","brandSlug":"murata-electronics","productSlug":"LQH31MN2R2K03L","canonicalUrl":"https://icboms.com/murata-electronics/LQH31MN2R2K03L","factsUrl":"https://icboms.com/api/mcp/products/LQH31MN2R2K03L","rawCanonicalId":null},"summary":{"shortDescription":"Murata Electronics LQH31 series wirewound inductor, 2.2 µH, ±10%, 140 mA, 910 mOhm DCR, unshielded, 1206 (3216 Metric) SMD.","salesMarkdown":"## 2.2 µH at 140 mA — where this fits in a filter or bias circuit The LQH31MN2R2K03L: Rated 140 mA continuous with a 910 mOhm max DCR, this 2.2 µH wirewound is sized for low-current DC-DC input filters or RF bias-T networks where the DC bias current stays under 100 mA to keep the core from saturating. The self-resonant frequency of 50 MHz and Q factor of 35 at 10 MHz mean the inductor behaves as a pure inductance up through the low-VHF band — useful for filtering switching noise from a 1-10 MHz converter or decoupling a 433 MHz ISM-band supply line where the SRF is well above the operating frequency. Unshielded construction means the external magnetic field couples into adjacent PCB traces — keep a keep-out zone under the component and avoid routing sensitive analog lines directly beneath it. ## Last-buy status — what it means for your BOM line Murata has flagged this part as Last Buy — the final production window is closing, and once Murata's inventory is exhausted, the only channel will be independent surplus. If your design requires a drop-in replacement, the 1206 footprint is a standard size shared by many wirewound inductors — a parametric search for 2.2 µH ±10% in the same package will yield alternatives, but the DCR and SRF will differ and should be re-verified against the circuit's ripple current and self-resonance margin. If you are stocking spares for a long-life product, this is the moment to buy the lifetime quantity.","metaTitle":"Murata LQH31MN2R2K03L 2.2 µH Wirewound Inductor, 140 mA","metaDescription":"Murata LQH31MN2R2K03L wirewound inductor, 2.2 µH ±10%, 140 mA, 910 mOhm DCR, 1206 SMD. Last-buy status — sourced to order via RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Last Buy","categoryPath":["Inductors & Chokes"],"specifications":{"Mfr":"Murata Electronics","Type":"Wirewound","Series":"LQH31","Package":"Tape & Reel (TR) Cut Tape (CT)","Ratings":"-","Q @ Freq":"35 @ 10MHz","Shielding":"Unshielded","Tolerance":"±10%","Inductance":"2.2 µH","Mounting Type":"Surface Mount","Package / Case":"1206 (3216 Metric)","Product Status":"Last Time Buy","Material - Core":"-","lifecycle_stage":"unknown","Size / Dimension":"0.126\\\" L x 0.063\\\" W (3.20mm x 1.60mm)","Base Product Number":"LQH31MN","DC Resistance (DCR)":"910mOhm Max","Current Rating (Amps)":"140 mA","Height - Seated (Max)":"0.079\\\" (2.00mm)","Operating Temperature":"-40°C ~ 85°C","Supplier Device Package":"1206","Frequency - Self Resonant":"50MHz","Current - Saturation (Isat)":"-","Inductance Frequency - Test":"1 MHz"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.3023","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/23793266b202ae546e5047be20f0e556.pdf","sourceUrl":null},"ai":{"faq":[{"question":"How can I order the LQH31MN2R2K03L or check availability?","answer":"This part is in last-buy status from Murata."},{"question":"What is the closest alternative to LQH31MN2R2K03L in the same family?","answer":"No official pin-compatible successor is listed. The 1206 footprint is standard, so a parametric search for 2.2 µH ±10% in the same package will yield alternatives, but DCR and SRF will differ — verify against your circuit's ripple current and self-resonance margin before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/murata-electronics/LQH31MN2R2K03L","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/murata-electronics/LQH31MN2R2K03L when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-20T14:34:45.345Z","lastPublished":"2026-07-20T14:34:45.345Z","indexable":true}}