{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LQH43MN3R3M03L","brand":"Murata Electronics","brandSlug":"murata-electronics","productSlug":"LQH43MN3R3M03L","canonicalUrl":"https://icboms.com/murata-electronics/LQH43MN3R3M03L","factsUrl":"https://icboms.com/api/mcp/products/LQH43MN3R3M03L","rawCanonicalId":null},"summary":{"shortDescription":"Murata Electronics LQH43 series, LQH43MN3R3M03L, Drum Core Wirewound Inductor, 3.3 µH, ±20%, 500 mA, 350 mOhm DCR, Unshielded, 1812 (4532 Metric), Surface Mount.","salesMarkdown":"## 3.3 µH drum-core inductor for DC-DC filtering and bias-T circuits The Murata LQH43MN3R3M03L is a 3.3 µH ±20% drum-core wirewound inductor in the LQH43 series, built on a ferrite core and housed in an unshielded 1812 (4532 Metric) surface-mount package. Rated for 500 mA continuous current with a maximum DC resistance of 350 mOhm, the part suits power-supply filtering and signal-path decoupling where the DC bias stays below the current ceiling to avoid saturation. The self-resonant frequency of 47 MHz means the inductor behaves inductively well into the HF band, making it usable in low-frequency switching regulators and RF bias networks up to tens of megahertz. ## Unshielded construction and board layout considerations Because the part is unshielded, the magnetic field radiates from the drum core — keep the inductor away from sensitive analog traces, high-impedance nodes, and adjacent magnetics to avoid coupling. Inductance is tested at 1 MHz, and the Q factor is 20 at that frequency — a moderate Q that indicates acceptable AC loss for general-purpose filtering.","metaTitle":"Murata LQH43MN3R3M03L 3.3 µH Inductor, 500 mA, 1812","metaDescription":"Active Murata LQH43MN3R3M03L drum-core wirewound inductor, 3.3 µH ±20%, 500 mA, 350 mOhm DCR, 1812 SMD. Quoted to order against 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) Cut Tape (CT)","Ratings":"-","Q @ Freq":"20 @ 1MHz","Shielding":"Unshielded","Tolerance":"±20%","Inductance":"3.3 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)":"350mOhm Max","Current Rating (Amps)":"500 mA","Height - Seated (Max)":"0.110\\\" (2.80mm)","Operating Temperature":"-40°C ~ 85°C","Supplier Device Package":"1812","Frequency - Self Resonant":"47MHz","Current - Saturation (Isat)":"-","Inductance Frequency - Test":"1 MHz"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.2614","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/d1493e4ce66984c31e9b5c6bbb04d9e5.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is LQH43MN3R3M03L's listed type and series?","answer":"It is a Drum Core, Wirewound inductor in the LQH43 series from Murata Electronics."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/murata-electronics/LQH43MN3R3M03L","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/murata-electronics/LQH43MN3R3M03L 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}}