{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LQH43CN1R5M33L","brand":"Murata Electronics","brandSlug":"murata-electronics","productSlug":"LQH43CN1R5M33L","canonicalUrl":"https://icboms.com/murata-electronics/LQH43CN1R5M33L","factsUrl":"https://icboms.com/api/mcp/products/LQH43CN1R5M33L","rawCanonicalId":null},"summary":{"shortDescription":"Murata Electronics LQH43 series drum core wirewound inductor, 1.5 µH, 2.45 A, ±20%, 47 mOhm DCR, unshielded, 1812 (4532 Metric) SMD, -40°C to 85°C.","salesMarkdown":"## 1.5 µH, 2.45 A — the power rail filter choice The LQH43CN1R5M33L is a drum-core wirewound inductor from Murata's LQH43 series, rated 1.5 µH at 2.45 A with a maximum DC resistance of 47 mOhm. That DCR at the rated current means the I²R loss stays under 0.3 W — manageable in a 1812 footprint for a buck converter output filter or a point-of-load input choke. The self-resonant frequency of 80 MHz places the usable inductance well above the switching frequency of most DC-DC converters (typically 300 kHz to 2 MHz), so the inductor behaves as a pure inductance in the power loop without capacitive coupling effects. ## Ferrite core, unshielded — what it means for layout The ferrite core material gives stable inductance over temperature and DC bias compared to powdered-iron cores, but the unshielded construction means the flux field extends beyond the part body. Keep sensitive traces or other magnetics at least one part-width away to avoid coupling. For a 1.5 µH output choke in a 1 A buck, the ripple current stays within the DC bias headroom.","metaTitle":"Murata LQH43CN1R5M33L Inductor, 1.5 µH, 2.45 A, 1812","metaDescription":"Murata LQH43CN1R5M33L drum core wirewound inductor, 1.5 µH, 2.45 A, 47 mOhm DCR, 1812 SMD, -40 to 85°C. Active, 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":"-","Shielding":"Unshielded","Tolerance":"±20%","Inductance":"1.5 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)":"47mOhm Max","Current Rating (Amps)":"2.45 A","Height - Seated (Max)":"0.110\\\" (2.80mm)","Operating Temperature":"-40°C ~ 85°C","Supplier Device Package":"1812 (4532 Metric)","Frequency - Self Resonant":"80MHz","Current - Saturation (Isat)":"-","Inductance Frequency - Test":"1 MHz"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.2212","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/e4ffd95d57b880d736712d74c6ca4549.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the DC resistance and why does it matter?","answer":"The maximum DCR is 47 mOhm. At the 2.45 A rated current, the I²R loss is about 0.28 W — this is the heat the part dissipates in still air. For a dense PCB, derate the current if ambient temperature exceeds 85°C or if airflow is restricted."},{"question":"Can I use this inductor in a 12 V to 3.3 V buck converter?","answer":"Yes, the 1.5 µH value and 2.45 A rating suit a 12 V input buck switching at 400 kHz to 1 MHz, delivering up to about 1.5 A output. The self-resonant frequency of 80 MHz is well above the switching frequency, so the inductance remains stable. Confirm the ripple current stays below the saturation current in your specific design."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/murata-electronics/LQH43CN1R5M33L","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/murata-electronics/LQH43CN1R5M33L 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}}