{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LQH43NN181J03L","brand":"Murata Electronics","brandSlug":"murata-electronics","productSlug":"LQH43NN181J03L","canonicalUrl":"https://icboms.com/murata-electronics/LQH43NN181J03L","factsUrl":"https://icboms.com/api/mcp/products/LQH43NN181J03L","rawCanonicalId":null},"summary":{"shortDescription":"Murata Electronics LQH43 series drum core wirewound inductor, 180 µH, ±5%, 120 mA, unshielded, 1812 (4532 Metric) surface mount.","salesMarkdown":"## Drum core wirewound, 180 µH, 120 mA The Murata LQH43NN181J03L is a drum core wirewound inductor from the LQH43 series, offering 180 µH inductance with ±5% tolerance in an unshielded 1812 (4532 Metric) surface-mount package. Rated for 120 mA continuous current with a maximum DC resistance of 4.5 Ohm, this part is suited for filtering and decoupling in low-current power rails or signal lines where the inductance value and the self-resonant frequency at 5 MHz define the noise attenuation band. ## Parametric fit for the BOM line The 180 µH inductance at 1 MHz test frequency and the 40 Q factor at 796 kHz give a clear impedance profile for the target frequency — the self-resonant frequency at 5 MHz marks the upper limit where the inductor behaves capacitively, so keep the operating frequency well below that. The ferrite core material supports the inductance stability over the temperature range, but the unshielded construction means the magnetic field radiates — adjacent traces or components in the layout need clearance to avoid coupling.","metaTitle":"Murata LQH43NN181J03L Inductor, 180 µH, 120 mA, 1812","metaDescription":"Murata LQH43NN181J03L drum core wirewound inductor, 180 µH, 120 mA, 4.5 Ohm DCR, unshielded, 1812 package. Active production, quoted 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); Cut Tape (CT)","Ratings":"-","Q @ Freq":"40 @ 796kHz","Shielding":"Unshielded","Tolerance":"±5%","Inductance":"180 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":"LQH43NN","DC Resistance (DCR)":"4.5Ohm Max","Current Rating (Amps)":"120 mA","Height - Seated (Max)":"0.110\\\" (2.80mm)","Operating Temperature":"-40°C~105°C","Supplier Device Package":"1812 (4532 Metric)","Frequency - Self Resonant":"5MHz","Current - Saturation (Isat)":"-","Inductance Frequency - Test":"1 MHz"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.3158","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/d0d6b1d39c76e30b3c05600906460c39.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is LQH43NN181J03L's listed type and series?","answer":"It is a drum core, wirewound inductor from the LQH43 series by Murata Electronics."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/murata-electronics/LQH43NN181J03L","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/murata-electronics/LQH43NN181J03L 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}}