{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LQH32CN470K23L","brand":"Murata Electronics","brandSlug":"murata-electronics","productSlug":"LQH32CN470K23L","canonicalUrl":"https://icboms.com/murata-electronics/LQH32CN470K23L","factsUrl":"https://icboms.com/api/mcp/products/LQH32CN470K23L","rawCanonicalId":null},"summary":{"shortDescription":"Murata Electronics LQH32 series, Drum Core Wirewound Inductor, Unshielded, 47 µH, ±10%, 170 mA, 1.69 Ohm DCR, 1210 (3225 Metric), Tape & Reel.","salesMarkdown":"## 47 µH wirewound for DC-DC filtering and bias-T networks The Murata LQH32CN470K23L is a 47 µH unshielded wirewound inductor in the LQH32 series, built on a ferrite core with a drum-core construction. It is rated for 170 mA continuous current with a maximum DC resistance of 1.69 Ohm — the DCR figure sets the I²R heating floor for the current path, so the 170 mA rating already accounts for the temperature rise at that resistance. ## Self-resonant frequency and impedance roll-off The self-resonant frequency (SRF) is 15 MHz — above this point the inductor behaves capacitively, so the effective filtering band stops well before that. For a buck converter switching at 1 MHz, the 47 µH value places the SRF more than a decade above the fundamental, keeping the impedance inductive across the switching harmonics that matter. Inductance is tested at 1 MHz, which is the standard Murata test frequency for this value range. The ±10 % tolerance is typical for power-grade wirewounds; a tighter (±5 %) grade would cost more and is rarely needed for DC-DC output filters where the loop compensator absorbs the inductance spread. ## Surface-mount footprint and temperature envelope The unshielded construction means the external field couples into adjacent traces — keep a keep-out zone under the part on inner layers and avoid routing sensitive analog lines directly beneath it. The ferrite core material is stable across this band; the main drift is the DCR increase with temperature, which reduces the saturation current margin at the hot end.","metaTitle":"Murata LQH32CN470K23L 47 µH Unshielded Wirewound Inductor","metaDescription":"Murata LQH32CN470K23L, 47 µH ±10% wirewound inductor, 170 mA, 1.69 Ohm DCR, 15 MHz SRF, -40 to 85°C. Active. Sourced per RFQ.","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":"LQH32","Package":"Tape & Reel (TR) Cut Tape (CT)","Ratings":"-","Q @ Freq":"-","Shielding":"Unshielded","Tolerance":"±10%","Inductance":"47 µH","Mounting Type":"Surface Mount","Package / Case":"Nonstandard","Product Status":"Active","Material - Core":"Ferrite","lifecycle_stage":"unknown","Size / Dimension":"0.126\\\" L x 0.098\\\" W (3.20mm x 2.50mm)","Base Product Number":"LQH32CN","DC Resistance (DCR)":"1.69Ohm Max","Current Rating (Amps)":"170 mA","Height - Seated (Max)":"0.067\\\" (1.70mm)","Operating Temperature":"-40°C ~ 85°C","Supplier Device Package":"1210 (3225 Metric)","Frequency - Self Resonant":"15MHz","Current - Saturation (Isat)":"-","Inductance Frequency - Test":"1 MHz"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.3000","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/4f5a83aea7d8976b9e1c45f685345218.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the DC resistance and current rating of LQH32CN470K23L?","answer":"Maximum DCR is 1.69 Ohm, and the continuous current rating is 170 mA. The DCR sets the resistive loss at the rated current: 170 mA through 1.69 Ohm dissipates roughly 49 mW, which is well within the 1210 case's thermal budget."},{"question":"What is the self-resonant frequency of this inductor?","answer":"The SRF is 15 MHz. Above this frequency the impedance becomes capacitive, so the inductor is effective as a filter element only below roughly 10 MHz in practice."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/murata-electronics/LQH32CN470K23L","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/murata-electronics/LQH32CN470K23L 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}}