{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LQH31MN120K03L","brand":"Murata Electronics","brandSlug":"murata-electronics","productSlug":"LQH31MN120K03L","canonicalUrl":"https://icboms.com/murata-electronics/LQH31MN120K03L","factsUrl":"https://icboms.com/api/mcp/products/LQH31MN120K03L","rawCanonicalId":null},"summary":{"shortDescription":"Murata Electronics LQH31 series, Drum Core Wirewound Inductor, 12 µH, ±10%, 95 mA, 3.51 Ohm DCR, Unshielded, 1206 (3216 Metric), Tape & Reel.","salesMarkdown":"Murata has placed the LQH31MN120K03L on Last Buy status. This means the manufacturer will accept final orders for a limited window, after which the part will be discontinued. For any existing BOM that uses this inductor, the procurement team should secure the remaining lifetime volume or qualify a replacement before the cutoff. ## 12 µH, 95 mA — where this fits in a supply rail The LQH31MN120K03L is a 12 µH unshielded wirewound inductor in the LQH31 series from Murata, rated for 95 mA continuous current. The 3.51 Ohm maximum DC resistance means at full rated current the I²R loss is about 32 mW — acceptable for low-power DC-DC converter input or output filtering, but not for high-efficiency designs where DCR directly impacts conversion efficiency. The self-resonant frequency is 18 MHz, and the Q factor is 35 at 5 MHz. This tells you the inductor behaves as a pure inductance well below 18 MHz; above that, parasitic capacitance dominates. For a switching regulator switching at 1–2 MHz, the 18 MHz SRF gives plenty of margin — the inductor will not self-resonate in-band. ## 1206 footprint, unshielded — board-fit considerations The unshielded construction means magnetic flux radiates from the core — keep sensitive analog or RF traces at least a few millimeters away to avoid coupling noise into adjacent circuits. It is a general-purpose grade — not qualified to AEC-Q200, so avoid automotive powertrain or safety-critical applications without additional qualification data.","metaTitle":"Murata LQH31MN120K03L 12 µH Inductor, 95 mA, Last Buy","metaDescription":"Murata LQH31MN120K03L drum core wirewound inductor, 12 µH, 95 mA, 3.51 Ohm DCR, 1206 package. Last Buy status — confirm availability and request a quote.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Last Buy","categoryPath":["Inductors & Chokes"],"specifications":{"Mfr":"Murata Electronics","Type":"Drum Core, Wirewound","Series":"LQH31","Package":"Tape & Reel (TR)","Ratings":"-","Q @ Freq":"35 @ 5MHz","Shielding":"Unshielded","Tolerance":"±10%","Inductance":"12 µH","Mounting Type":"Surface Mount","Package / Case":"1206 (3216 Metric)","Product Status":"Last Time Buy","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)":"3.51Ohm Max","Current Rating (Amps)":"95 mA","Height - Seated (Max)":"0.079\\\" (2.00mm)","Operating Temperature":"-40°C ~ 85°C","Supplier Device Package":"1206","Frequency - Self Resonant":"18MHz","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":"What is the DC resistance of LQH31MN120K03L?","answer":"The maximum DC resistance is 3.51 Ohm. This is the winding resistance at room temperature; it increases with temperature, so budget for higher loss at elevated ambient."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/murata-electronics/LQH31MN120K03L","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/murata-electronics/LQH31MN120K03L 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}}