{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LQH43CN470K03L","brand":"Murata Electronics","brandSlug":"murata-electronics","productSlug":"LQH43CN470K03L","canonicalUrl":"https://icboms.com/murata-electronics/LQH43CN470K03L","factsUrl":"https://icboms.com/api/mcp/products/LQH43CN470K03L","rawCanonicalId":null},"summary":{"shortDescription":"Murata Electronics LQH43 series, Drum Core Wirewound Inductor, Unshielded, 47 µH, ±10%, 280 mA, 1.1 Ω DCR, 1812 (4532 Metric), Surface Mount.","salesMarkdown":"## 47 µH unshielded wirewound — DC bias and loss budget The LQH43CN470K03L is a drum-core wirewound inductor in the LQH43 series, rated 47 µH ±10% at 1 MHz test frequency. The unshielded construction means the flux field extends beyond the component body — keep sensitive traces or adjacent magnetics at least one package width away to avoid coupling. DC current rating of 280 mA is the bias at which inductance typically drops by 10 %; above that the core begins saturating and the effective inductance falls off. The 1.1 Ω max DCR translates to roughly 86 mW self-heating at full rated current — negligible in free air but relevant in a dense 1812 array. Self-resonant frequency of 10 MHz sets the upper bound for filtering applications. Below SRF the component behaves as an inductor; near or above it the parasitic capacitance dominates and the impedance becomes capacitive. For a buck converter switching at 2 MHz, this part stays well within the inductive region with margin. For applications requiring continuous ambient above 85 °C, a higher-temperature-grade inductor (e.g., Murata's LQH43C_ series with extended temp) would be needed.","metaTitle":"Murata LQH43CN470K03L 47 µH Unshielded Inductor, 280 mA","metaDescription":"47 µH unshielded wirewound inductor, 280 mA, 1.1 Ω DCR, 1812 package. Active production. Sourced 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":"-","Shielding":"Unshielded","Tolerance":"±10%","Inductance":"47 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":"LQH43CN","DC Resistance (DCR)":"1.1Ohm Max","Current Rating (Amps)":"280 mA","Height - Seated (Max)":"0.110\\\" (2.80mm)","Operating Temperature":"-40°C ~ 85°C","Supplier Device Package":"1812","Frequency - Self Resonant":"10MHz","Current - Saturation (Isat)":"-","Inductance Frequency - Test":"1 MHz"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.3800","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/285342e99fdeeb4e955f855a995fa4ac.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to LQH43CN470K03L?","answer":"No official cross-reference or second-source is listed for this exact inductance/tolerance/package combination. The LQH43 series includes other inductance values in the same 1812 footprint; verify the 47 µH ±10% and 280 mA rating against your design's filter corner and DC bias requirements before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/murata-electronics/LQH43CN470K03L","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/murata-electronics/LQH43CN470K03L 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}}