{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LQH43MN271J03L","brand":"Murata Electronics","brandSlug":"murata-electronics","productSlug":"LQH43MN271J03L","canonicalUrl":"https://icboms.com/murata-electronics/LQH43MN271J03L","factsUrl":"https://icboms.com/api/mcp/products/LQH43MN271J03L","rawCanonicalId":null},"summary":{"shortDescription":"Murata Electronics LQH43 series, Drum Core Wirewound Inductor, 270 µH, ±5%, 100 mA, 6.8 Ohm DCR, Unshielded, 1812 (4532 Metric), Surface Mount, Tape & Reel.","salesMarkdown":"## 270 µH wirewound, 100 mA rated — the DCR and SRF set the usable band The LQH43MN271J03L is a drum-core, wirewound inductor from Murata's LQH43 series, offering 270 µH inductance with ±5% tolerance in a standard 1812 (4532 Metric) surface-mount package. ## Unshielded construction — the 4 MHz SRF defines the useful frequency window The unshielded ferrite core means magnetic flux radiates into the surrounding board area — adjacent traces carrying sensitive analog signals or high-speed edges need keep-out clearance to avoid coupling. Self-resonant frequency is 4 MHz; above this the inductor behaves capacitively and the impedance drops. Practical filtering or energy-storage applications should stay well below that corner — typically below 1–2 MHz for a clean inductive response. Q factor is 40 at 796 kHz, indicating moderate efficiency at that test frequency — the core losses and DCR dominate the loss budget.","metaTitle":"Murata LQH43MN271J03L Drum Core Inductor, 270 µH, 100 mA","metaDescription":"Murata LQH43MN271J03L wirewound drum core inductor, 270 µH ±5%, 100 mA, 6.8 Ohm DCR, 4 MHz SRF, 1812 SMD. Active production, available 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)","Ratings":"-","Q @ Freq":"40 @ 796kHz","Shielding":"Unshielded","Tolerance":"±5%","Inductance":"270 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)":"6.8Ohm Max","Current Rating (Amps)":"100 mA","Height - Seated (Max)":"0.110\\\" (2.80mm)","Operating Temperature":"-40°C ~ 85°C","Supplier Device Package":"1812","Frequency - Self Resonant":"4MHz","Current - Saturation (Isat)":"-","Inductance Frequency - Test":"1 MHz"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.2299","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/d1493e4ce66984c31e9b5c6bbb04d9e5.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the inductance tolerance of LQH43MN271J03L?","answer":"The LQH43MN271J03L has a ±5% tolerance on its 270 µH nominal inductance."},{"question":"What is the maximum DC current rating and DCR?","answer":"Rated for 100 mA continuous current with a maximum DC resistance of 6.8 Ohms."},{"question":"Is LQH43MN271J03L shielded?","answer":"No, it is an unshielded drum-core inductor — magnetic flux radiates from the component, so board layout should account for coupling to nearby traces."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/murata-electronics/LQH43MN271J03L","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/murata-electronics/LQH43MN271J03L 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}}