{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LQH43NN270K03L","brand":"Murata Electronics","brandSlug":"murata-electronics","productSlug":"LQH43NN270K03L","canonicalUrl":"https://icboms.com/murata-electronics/LQH43NN270K03L","factsUrl":"https://icboms.com/api/mcp/products/LQH43NN270K03L","rawCanonicalId":null},"summary":{"shortDescription":"Murata Electronics LQH43 series drum core wirewound inductor, 27 µH, ±10%, 300 mA, unshielded, 1812 (4532 Metric) SMD package, ferrite core.","salesMarkdown":"## 27 µH, 300 mA — the DC bias and loss budget The Murata LQH43NN270K03L is a drum core wirewound inductor in the LQH43 series, wound on a ferrite core and housed in an unshielded 1812 (4532 Metric) surface-mount package. Rated at 27 µH ±10% with a maximum DC resistance of 1.1 Ω and a current rating of 300 mA, this inductor is sized for power-supply filtering or DC-DC converter output stages where the DC bias current stays under the 300 mA ceiling and the I²R loss at full load (about 99 mW) is within the board's thermal budget. The self-resonant frequency of 14 MHz and a Q factor of 35 at 1 MHz tell you the useful inductance holds up well into the low-MHz switching range — above 14 MHz the part becomes capacitive, so keep the ripple frequency below that for a clean filter response. ## Unshielded — what that means for layout Unshielded construction means 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 coupling.","metaTitle":"Murata LQH43NN270K03L 27µH Wirewound Inductor, 300mA","metaDescription":"Murata LQH43NN270K03L drum core wirewound inductor, 27µH ±10%, 300mA rating, 1.1Ω DCR max. 1812 SMD package, ferrite core. 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) Cut Tape (CT)","Ratings":"-","Q @ Freq":"35 @ 1MHz","Shielding":"Unshielded","Tolerance":"±10%","Inductance":"27 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)":"1.1Ohm Max","Current Rating (Amps)":"300 mA","Height - Seated (Max)":"0.110\\\" (2.80mm)","Operating Temperature":"-40°C ~ 105°C","Supplier Device Package":"1812 (4532 Metric)","Frequency - Self Resonant":"14MHz","Current - Saturation (Isat)":"-","Inductance Frequency - Test":"1 MHz"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.2818","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/d0d6b1d39c76e30b3c05600906460c39.pdf","sourceUrl":null},"ai":{"faq":[{"question":"How can I get pricing and availability for LQH43NN270K03L?","answer":"Submit an RFQ through this listing."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/murata-electronics/LQH43NN270K03L","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/murata-electronics/LQH43NN270K03L 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}}