{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LQH43NN820J03L","brand":"Murata Electronics","brandSlug":"murata-electronics","productSlug":"LQH43NN820J03L","canonicalUrl":"https://icboms.com/murata-electronics/LQH43NN820J03L","factsUrl":"https://icboms.com/api/mcp/products/LQH43NN820J03L","rawCanonicalId":null},"summary":{"shortDescription":"Murata Electronics LQH43 series, Drum Core Wirewound Inductor, LQH43NN820J03L, 82 µH, ±5%, 170 mA, 2.2 Ohm DCR, Unshielded, 1812 (4532 Metric) SMD.","salesMarkdown":"## 82 µH, 170 mA — what the ratings mean for the BOM line The LQH43NN820J03L: The 82 µH inductance at 1 MHz test frequency places this part squarely in the filtering and DC-DC output choke space — think LC filters on a 5 V rail or the storage inductor in a low-power buck converter where the ripple current stays under 170 mA. 170 mA continuous current rating with a 2.2 Ohm max DCR means the self-heating at full load is about 64 mW (I²R). In a dense SMD layout, that heat dissipates through the 1812 pad set — no special thermal management needed, but the unshielded construction means the flux couples into nearby traces and components, so keep sensitive analog or RF routing clear of the magnetic field. The Q factor of 35 at 1 MHz is moderate — adequate for general-purpose filtering but not a high-Q resonant tank. Self-resonant frequency at 7.5 MHz tells you the useful inductive region stops well below that; above SRF the part looks capacitive. Murata lists the LQH43NN820J03L as an active product. The 1812 (4532 Metric) footprint is a standard, widely second-sourced package size. If supply tightens, parametric equivalents from other manufacturers (same inductance, current, DCR, footprint) are cross-shop candidates — but no official Murata second-source or direct replacement is listed. ## Sourcing and availability — quoted to order Available in Tape & Reel (TR) or Cut Tape (CT) packaging per the listing. Standard reel quantities apply; lot traceability and date code freshness are confirmed at order placement.","metaTitle":"Murata LQH43NN820J03L 82 µH Wirewound Inductor, 170 mA","metaDescription":"Murata Electronics LQH43NN820J03L, 82 µH unshielded wirewound inductor, 170 mA, 2.2 Ohm DCR, 1812 SMD. Active part, sourced to order. 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":"35 @ 1MHz","Shielding":"Unshielded","Tolerance":"±5%","Inductance":"82 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)":"2.2Ohm Max","Current Rating (Amps)":"170 mA","Height - Seated (Max)":"0.110\\\" (2.80mm)","Operating Temperature":"-40°C ~ 105°C","Supplier Device Package":"1812 (4532 Metric)","Frequency - Self Resonant":"7.5MHz","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 LQH43NN820J03L's listed type and series?","answer":"It is a Drum Core, Wirewound inductor in Murata's LQH43 series. The construction is unshielded with a ferrite core."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/murata-electronics/LQH43NN820J03L","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/murata-electronics/LQH43NN820J03L 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}}