{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LQH43MN821K03L","brand":"Murata Electronics","brandSlug":"murata-electronics","productSlug":"LQH43MN821K03L","canonicalUrl":"https://icboms.com/murata-electronics/LQH43MN821K03L","factsUrl":"https://icboms.com/api/mcp/products/LQH43MN821K03L","rawCanonicalId":null},"summary":{"shortDescription":"Murata Electronics LQH43 series, Drum Core Wirewound Inductor, 820 µH, ±10%, 60 mA, 20.5 Ohm DCR, Unshielded, 1812 (4532 Metric), Ferrite Core.","salesMarkdown":"## 820 µH wirewound in a 1812 footprint The Murata LQH43MN821K03L is a drum-core, wirewound inductor from the LQH43 series, offering 820 µH inductance with ±10% tolerance in a standard 1812 (4532 Metric) surface-mount package. Rated for 60 mA continuous current with a maximum DC resistance of 20.5 Ohm, this unshielded inductor is suited for filtering and energy storage in low-current DC-DC converter output stages or signal-line chokes where the 820 µH value provides high impedance at switching frequencies. ## Frequency response and temperature range A Q factor of 40 at 796 kHz and a self-resonant frequency of 2.2 MHz define the useful band; above 2.2 MHz the inductor behaves capacitively, so the application should keep the ripple fundamental below that threshold. The operating temperature range spans -40°C to +85°C, covering most indoor industrial and automotive interior environments without derating concerns at the 60 mA rated current. Inductance is tested at 1 kHz, confirming the core material (ferrite) and winding are stable at low frequencies; the 820 µH value holds well within tolerance across the rated temperature band. ## Package and board-fit details The unshielded construction means the magnetic field extends outside the package; keep sensitive traces or low-level analog circuitry at least one package width away to avoid coupling.","metaTitle":"Murata LQH43MN821K03L Inductor, 820 µH, 60 mA, 1812","metaDescription":"Murata LQH43MN821K03L wirewound drum core inductor, 820 µH ±10%, 60 mA rated current, 20.5 Ohm DCR, 1812 SMD. Active production. Request a quote.","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":"±10%","Inductance":"820 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":"LQH43MN","DC Resistance (DCR)":"20.5Ohm Max","Current Rating (Amps)":"60 mA","Height - Seated (Max)":"0.110\\\" (2.80mm)","Operating Temperature":"-40°C ~ 85°C","Supplier Device Package":"1812","Frequency - Self Resonant":"2.2MHz","Current - Saturation (Isat)":"-","Inductance Frequency - Test":"1 kHz"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.4300","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/d1493e4ce66984c31e9b5c6bbb04d9e5.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the self-resonant frequency of this inductor?","answer":"The self-resonant frequency is 2.2 MHz. Above that frequency the inductor behaves capacitively, so the application's ripple fundamental should stay below 2.2 MHz."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/murata-electronics/LQH43MN821K03L","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/murata-electronics/LQH43MN821K03L 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}}