{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LQH43MN180K03L","brand":"Murata Electronics","brandSlug":"murata-electronics","productSlug":"LQH43MN180K03L","canonicalUrl":"https://icboms.com/murata-electronics/LQH43MN180K03L","factsUrl":"https://icboms.com/api/mcp/products/LQH43MN180K03L","rawCanonicalId":null},"summary":{"shortDescription":"Murata Electronics LQH43 series, Drum Core Wirewound Inductor, 18 µH, ±10%, 340 mA, 820 mOhm DCR, Unshielded, 1812 (4532 Metric), Surface Mount, Tape & Reel.","salesMarkdown":"## 18 µH drum-core wirewound for DC-DC filtering and bias-T applications The Murata LQH43MN180K03L is a drum-core wirewound inductor in the LQH43 series, delivering 18 µH ±10% in an unshielded 1812 (4532 metric) SMD package. Rated for 340 mA continuous DC current with a maximum DC resistance of 820 mOhm, this part suits power-supply filtering, DC-DC converter output chokes, and bias-T circuits where the inductance value and current rating align with the rail budget. The ferrite core material and wirewound construction yield a self-resonant frequency of 17 MHz and a Q factor of 35 at 1 MHz, giving predictable impedance up through the low-MHz band. ## Unshielded construction and layout implications Because this inductor is unshielded, the magnetic field radiates from the drum core — adjacent traces carrying sensitive analog signals or high-impedance nodes should be kept at least one component width away to avoid parasitic coupling.","metaTitle":"Murata LQH43MN180K03L 18µH Drum Core Inductor, 340 mA","metaDescription":"Murata LQH43MN180K03L 18 µH unshielded wirewound inductor, 340 mA rated current, 820 mOhm DCR max, 1812 SMD. 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":"LQH43","Package":"Tape & Reel (TR)","Ratings":"-","Q @ Freq":"35 @ 1MHz","Shielding":"Unshielded","Tolerance":"±10%","Inductance":"18 µH","Mounting Type":"Surface Mount","Package / Case":"1812 (4532 Metric)","Product Status":"Active","Material - Core":"Ferrite","lifecycle_stage":"unknown","Size / Dimension":"0.177\\\" L x 0.126\\\" W (4.50mm x 3.20mm)","Base Product Number":"LQH43MN","DC Resistance (DCR)":"820mOhm Max","Current Rating (Amps)":"340 mA","Height - Seated (Max)":"0.110\\\" (2.80mm)","Operating Temperature":"-40°C~85°C","Supplier Device Package":"1812","Frequency - Self Resonant":"17MHz","Current - Saturation (Isat)":"-","Inductance Frequency - Test":"1 MHz"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.2489","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/d1493e4ce66984c31e9b5c6bbb04d9e5.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the inductance and current rating of LQH43MN180K03L?","answer":"The inductor is rated 18 µH ±10% with a continuous DC current of 340 mA and a maximum DC resistance of 820 mOhm."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/murata-electronics/LQH43MN180K03L","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/murata-electronics/LQH43MN180K03L 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}}