{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LQH43NN470K03L","brand":"Murata Electronics","brandSlug":"murata-electronics","productSlug":"LQH43NN470K03L","canonicalUrl":"https://icboms.com/murata-electronics/LQH43NN470K03L","factsUrl":"https://icboms.com/api/mcp/products/LQH43NN470K03L","rawCanonicalId":null},"summary":{"shortDescription":"Murata Electronics LQH43 series, Drum Core Wirewound Inductor, 47 µH, ±10%, 220 mA, 1.5 Ohm DCR, Unshielded, 1812 (4532 Metric) Surface Mount.","salesMarkdown":"## 47 µH at 220 mA — where this inductor fits in the power rail The Murata LQH43NN470K03L is a 47 µH drum core wirewound inductor in the LQH43 series, rated for 220 mA continuous current with a maximum DC resistance of 1.5 Ohm. This combination of inductance and current makes it a fit for filtering, DC-DC converter output chokes, and decoupling in low-to-moderate current rails where the 47 µH value provides sufficient impedance at switching frequencies up to the 10 MHz self-resonant point. ## DCR and Q factor — what they mean for your circuit loss With a DCR of 1.5 Ohm max, this inductor will drop 0.33 V and dissipate 73 mW at the full 220 mA rated current. That resistive loss matters in a 3.3 V rail — it consumes about 2% of the rail voltage before the load sees it. The Q factor of 35 at 1 MHz tells you the ratio of inductive reactance to effective resistance at that test frequency; a Q of 35 is typical for a ferrite-core wirewound in this inductance range and means the AC losses are well controlled below the self-resonant frequency. ## 1812 SMD footprint and unshielded construction It is unshielded, so the magnetic field radiates from the drum core — keep sensitive traces or low-level analog circuits at least one package width away to avoid coupling.","metaTitle":"Murata LQH43NN470K03L 47 µH Wirewound Inductor, 220 mA","metaDescription":"Murata LQH43NN470K03L drum core wirewound inductor, 47 µH ±10%, 220 mA rated current, 1.5 Ohm DCR. 1812 SMD package. 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":"35 @ 1MHz","Shielding":"Unshielded","Tolerance":"±10%","Inductance":"47 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)":"1.5Ohm Max","Current Rating (Amps)":"220 mA","Height - Seated (Max)":"0.110\\\" (2.80mm)","Operating Temperature":"-40°C ~ 105°C","Supplier Device Package":"1812 (4532 Metric)","Frequency - Self Resonant":"10MHz","Current - Saturation (Isat)":"-","Inductance Frequency - Test":"1 MHz"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.5500","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 is 10 MHz. Above this frequency the inductor behaves capacitively, so it is best used in circuits switching below 10 MHz where the inductive impedance dominates."},{"question":"What is the inductance tolerance and test frequency?","answer":"The inductance tolerance is ±10%, tested at 1 MHz. The nominal inductance is 47 µH."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/murata-electronics/LQH43NN470K03L","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/murata-electronics/LQH43NN470K03L 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}}