{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LQH43CN1R5M03L","brand":"Murata Electronics","brandSlug":"murata-electronics","productSlug":"LQH43CN1R5M03L","canonicalUrl":"https://icboms.com/murata-electronics/LQH43CN1R5M03L","factsUrl":"https://icboms.com/api/mcp/products/LQH43CN1R5M03L","rawCanonicalId":null},"summary":{"shortDescription":"Murata Electronics LQH43 series drum core wirewound inductor, unshielded, ferrite core, 1.5 µH ±20%, 1 A rated current, 90 mOhm DCR, 1812 (4532 Metric) SMD package.","salesMarkdown":"## 1.5 µH at 1 A — the power-stage filter inductor The Murata LQH43CN1R5M03L is a 1.5 µH drum core wirewound inductor rated for 1 A continuous current. That current rating is the DC bias limit before the inductance starts rolling off — for a buck converter output filter drawing 800 mA steady-state, this part holds its inductance with margin. The 90 mOhm max DCR sets the copper loss at 90 mW at full rated current. In a 500 mA application the I²R loss drops to 22.5 mW, which keeps the temperature rise below 20°C in still air for most 1812 pad layouts. ## 85 MHz SRF — usable up to low-MHz switching Self-resonant frequency of 85 MHz means the inductor behaves inductively well above the 1-2 MHz switching frequencies common in point-of-load converters. Above SRF the impedance turns capacitive, so this part suits switching regulators switching in the hundreds of kHz to a few MHz range. ## 1812 footprint — standard pick-and-place The unshielded construction means the magnetic field fringes outside the core — keep sensitive traces or adjacent inductors at least one package width away to avoid coupling.","metaTitle":"Murata LQH43CN1R5M03L Inductor, 1.5 µH, 1 A, 1812","metaDescription":"Murata LQH43CN1R5M03L drum core wirewound inductor, 1.5 µH ±20%, 1 A rated current, 90 mOhm DCR, 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) Cut Tape (CT)","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)":"90mOhm Max","Current Rating (Amps)":"1 A","Height - Seated (Max)":"0.110\\\" (2.80mm)","Operating Temperature":"-40°C ~ 85°C","Supplier Device Package":"1812","Frequency - Self Resonant":"85MHz","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 inductance and current rating of LQH43CN1R5M03L?","answer":"The inductor is rated 1.5 µH ±20% with a 1 A continuous current rating. The DC resistance is 90 mOhm max, and the self-resonant frequency is 85 MHz."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/murata-electronics/LQH43CN1R5M03L","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/murata-electronics/LQH43CN1R5M03L 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}}