{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LQH43NN471J03L","brand":"Murata Electronics","brandSlug":"murata-electronics","productSlug":"LQH43NN471J03L","canonicalUrl":"https://icboms.com/murata-electronics/LQH43NN471J03L","factsUrl":"https://icboms.com/api/mcp/products/LQH43NN471J03L","rawCanonicalId":null},"summary":{"shortDescription":"Murata Electronics LQH43 series, Drum Core Wirewound Inductor, 470 µH, ±5%, 80 mA, 11.8 Ohm DCR, Unshielded, 1812 (4532 Metric) SMD.","salesMarkdown":"## 470 µH filter choke for DC-DC and signal conditioning The Murata LQH43NN471J03L is a 470 µH drum-core wirewound inductor in the LQH43 series, built for surface-mount filtering in power and signal paths where the DC current stays under 80 mA. Its 11.8 Ω max DC resistance means the I²R loss at full rated current is about 75 mW — acceptable for most low-power rails, but the voltage drop across the DCR matters if the inductor sits in a high-side supply line. The 3 MHz self-resonant frequency sets the upper bound for useful filtering; above that the component behaves capacitively, so it suits switching converters switching below 1 MHz and EMI line filters in the 100 kHz to 2 MHz band. ## 1812 footprint and rework considerations Unshielded construction means the stray field couples into adjacent traces or components — keep a clearance of at least one part width from sensitive analog loops or RF paths. ## Q factor and test conditions Minimum Q of 40 at 796 kHz indicates the inductor's AC losses are moderate — adequate for resonant tank circuits or bandpass filters at that frequency, but a higher-Q part would be preferred for narrowband RF front-ends. Inductance is tested at 1 kHz, not at the self-resonant frequency; the 470 µH value holds within ±5 % tolerance at low frequency, but effective inductance drops as frequency approaches SRF.","metaTitle":"Murata LQH43NN471J03L 470 µH Inductor, 80 mA, 1812","metaDescription":"Murata LQH43NN471J03L drum core wirewound inductor, 470 µH ±5%, 80 mA, 11.8 Ω DCR, 1812 SMD. Active production, sourced 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":"40 @ 796kHz","Shielding":"Unshielded","Tolerance":"±5%","Inductance":"470 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":"LQH43NN","DC Resistance (DCR)":"11.8Ohm Max","Current Rating (Amps)":"80 mA","Height - Seated (Max)":"0.110\\\" (2.80mm)","Operating Temperature":"-40°C~105°C","Supplier Device Package":"1812 (4532 Metric)","Frequency - Self Resonant":"3MHz","Current - Saturation (Isat)":"-","Inductance Frequency - Test":"1 kHz"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.3158","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/d0d6b1d39c76e30b3c05600906460c39.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the closest alternative to LQH43NN471J03L in the same family?","answer":"Within the LQH43 series, the closest parametric alternative would be a different inductance value at the same 1812 footprint and current rating — for example the LQH43NN331J03L (330 µH) or LQH43NN681J03L (680 µH). No pin-compatible direct substitute exists because the inductance is the defining selection parameter."},{"question":"What compliance documentation does Murata provide for this part?","answer":"Murata provides RoHS and REACH compliance declarations for the LQH43 series. No UL or IEC certification is listed in the standard product specifications."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/murata-electronics/LQH43NN471J03L","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/murata-electronics/LQH43NN471J03L 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}}