{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LQH43NN1R2M03L","brand":"Murata Electronics","brandSlug":"murata-electronics","productSlug":"LQH43NN1R2M03L","canonicalUrl":"https://icboms.com/murata-electronics/LQH43NN1R2M03L","factsUrl":"https://icboms.com/api/mcp/products/LQH43NN1R2M03L","rawCanonicalId":null},"summary":{"shortDescription":"Murata Electronics LQH43 series, Drum Core Wirewound Inductor, 1.2 µH, ±20%, 500 mA, Unshielded, 1812 (4532 Metric), Surface Mount.","salesMarkdown":"## 1.2 µH, 500 mA — what the ratings mean for the BOM The LQH43NN1R2M03L is a 1.2 µH drum-core wirewound inductor rated for 500 mA continuous current, with a maximum DC resistance of 200 mOhm. At full rated current the self-heating is about 50 mW — enough to raise the part temperature 10–15°C above ambient in still air, so verify the derating against your board's thermal profile. The unshielded construction means the magnetic field radiates freely. Keep sensitive analog or RF traces at least 3–5 mm from the footprint, or switch to a shielded variant if crosstalk shows up in testing. Q factor is 20 at 1 MHz — acceptable for power-supply filtering and DC bias decoupling, but not for tuned circuits or narrowband impedance matching where a higher-Q part would be specified. Tape-and-reel packaging (EIA-481) is standard for volume pick-and-place; cut-tape option available for prototyping or small-batch builds. ## Temperature range and lifecycle status Production status is Active per Murata's lifecycle data. No end-of-life notice or successor part number has been published.","metaTitle":"Murata LQH43NN1R2M03L 1.2 µH Unshielded Inductor, 500 mA","metaDescription":"Murata LQH43NN1R2M03L drum core wirewound inductor, 1.2 µH ±20%, 500 mA rated current, 200 mOhm DCR, 1812 SMT. 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":"20 @ 1MHz","Shielding":"Unshielded","Tolerance":"±20%","Inductance":"1.2 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":"LQH43NN","DC Resistance (DCR)":"200mOhm Max","Current Rating (Amps)":"500 mA","Height - Seated (Max)":"0.110\\\" (2.80mm)","Operating Temperature":"-40°C ~ 105°C","Supplier Device Package":"1812 (4532 Metric)","Frequency - Self Resonant":"100MHz","Current - Saturation (Isat)":"-","Inductance Frequency - Test":"1 MHz"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.6200","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/d0d6b1d39c76e30b3c05600906460c39.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the self-resonant frequency of this inductor?","answer":"The self-resonant frequency (SRF) is 100 MHz. Above this frequency the inductor behaves capacitively, so it is suitable for filtering and decoupling up to the low-VHF range but not for RF tank circuits or impedance matching at UHF."},{"question":"What compliance documentation does Murata provide for LQH43NN1R2M03L?","answer":"Murata typically provides RoHS and REACH compliance statements for the LQH43 series. Specific certificates (UL, IEC) are not listed in the standard product data. Request the compliance declaration from the distributor at order time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/murata-electronics/LQH43NN1R2M03L","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/murata-electronics/LQH43NN1R2M03L 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}}