{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LQH43MN181K03L","brand":"Murata Electronics","brandSlug":"murata-electronics","productSlug":"LQH43MN181K03L","canonicalUrl":"https://icboms.com/murata-electronics/LQH43MN181K03L","factsUrl":"https://icboms.com/api/mcp/products/LQH43MN181K03L","rawCanonicalId":null},"summary":{"shortDescription":"Murata Electronics LQH43 series, Drum Core Wirewound Inductor, 180 µH, 120 mA, 4.5 Ohm DCR, Unshielded, 1812 (4532 Metric) SMD, Tape & Reel.","salesMarkdown":"## 180 µH unshielded wirewound for DC-DC filter duty Murata LQH43MN181K03L is a drum-core wirewound inductor in the LQH43 series, rated 180 µH ±10% at 1 MHz test frequency. The 120 mA current rating and 4.5 Ohm max DCR set the usable load range for a buck or boost choke — the I²R loss at full current is about 65 mW, well within the 1812 package dissipation at 85 °C ambient. Self-resonant frequency is 5 MHz, so effective filtering rolls off below that point — above 5 MHz the inductor behaves capacitive. The ferrite core and unshielded construction mean the magnetic field extends outside the package; keep sensitive traces or other magnetics at least one package width away. ## Active production — no last-time-buy pressure Lifecycle status is Active per Murata's latest product disposition. No end-of-life notice or successor part has been issued for this order code.","metaTitle":"Murata LQH43MN181K03L 180µH Wirewound Inductor, 120mA","metaDescription":"Murata LQH43MN181K03L drum core wirewound inductor, 180 µH ±10%, 120 mA rated current, 4.5 Ohm DCR, unshielded 1812 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":"LQH43","Package":"Tape & Reel (TR)","Ratings":"-","Q @ Freq":"40 @ 796kHz","Shielding":"Unshielded","Tolerance":"±10%","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":"LQH43MN","DC Resistance (DCR)":"4.5Ohm Max","Current Rating (Amps)":"120 mA","Height - Seated (Max)":"0.110\\\" (2.80mm)","Operating Temperature":"-40°C~85°C","Supplier Device Package":"1812","Frequency - Self Resonant":"5MHz","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":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/murata-electronics/LQH43MN181K03L","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/murata-electronics/LQH43MN181K03L 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}}