{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LQH43MN270K03L","brand":"Murata Electronics","brandSlug":"murata-electronics","productSlug":"LQH43MN270K03L","canonicalUrl":"https://icboms.com/murata-electronics/LQH43MN270K03L","factsUrl":"https://icboms.com/api/mcp/products/LQH43MN270K03L","rawCanonicalId":null},"summary":{"shortDescription":"Murata Electronics LQH43 series, Drum Core Wirewound Inductor, 27 µH, ±10%, 300 mA, 1.1 Ohm DCR, Unshielded, 1812 (4532 Metric), Surface Mount.","salesMarkdown":"## 27 µH wirewound for power and signal filtering The LQH43MN270K03L is a 27 µH unshielded drum-core wirewound inductor in the Murata LQH43 series, built on a ferrite core. Rated for 300 mA DC current with a maximum DCR of 1.1 Ohm, this part suits low-to-moderate current rails where resistive loss and self-heating must be budgeted — a 300 mA load sees roughly 99 mW of copper loss at the DCR ceiling. The self-resonant frequency of 14 MHz defines the upper usable band; above that the inductive reactance rolls off into capacitive behaviour, so keep the switching or signal fundamental well below that corner. A Q factor of 35 at 1 MHz indicates moderate selectivity — adequate for resonant tank circuits or EMI filtering at frequencies near the test point, but not a high-Q narrowband part. ## Board-fit and sourcing Supplied on tape and reel (cut tape option available); the base product number LQH43MN covers the family variants, and this specific inductance-tolerance combination is order-code LQH43MN270K03L.","metaTitle":"Murata LQH43MN270K03L 27 µH Inductor, 300 mA, 1812","metaDescription":"Murata LQH43MN270K03L wirewound drum core inductor, 27 µH, 300 mA, 1.1 Ohm DCR, 1812 SMD, active production. Quoted 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) Cut Tape (CT)","Ratings":"-","Q @ Freq":"35 @ 1MHz","Shielding":"Unshielded","Tolerance":"±10%","Inductance":"27 µH","Mounting Type":"Surface Mount","Package / Case":"1812 (4532 Metric)","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)":"1.1Ohm Max","Current Rating (Amps)":"300 mA","Height - Seated (Max)":"0.110\\\" (2.80mm)","Operating Temperature":"-40°C ~ 85°C","Supplier Device Package":"1812","Frequency - Self Resonant":"14MHz","Current - Saturation (Isat)":"-","Inductance Frequency - Test":"1 MHz"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.1525","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/d1493e4ce66984c31e9b5c6bbb04d9e5.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the maximum DC current this inductor can handle?","answer":"The current rating is 300 mA. Above this level the inductance begins to drop due to core saturation, and the DCR of 1.1 Ohm max governs the resistive voltage drop and self-heating."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/murata-electronics/LQH43MN270K03L","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/murata-electronics/LQH43MN270K03L 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}}