{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LQH43MN820J03L","brand":"Murata Electronics","brandSlug":"murata-electronics","productSlug":"LQH43MN820J03L","canonicalUrl":"https://icboms.com/murata-electronics/LQH43MN820J03L","factsUrl":"https://icboms.com/api/mcp/products/LQH43MN820J03L","rawCanonicalId":null},"summary":{"shortDescription":"Murata Electronics LQH43 series drum core wirewound inductor, unshielded, 82 µH ±5%, 170 mA, 2.2 Ohm DCR, 1812 (4532 Metric) SMD, ferrite core.","salesMarkdown":"## 82 µH at 170 mA — where the current rating governs the fit The LQH43MN820J03L is a Murata drum-core wirewound inductor in the LQH43 series, rated 82 µH ±5% with a 170 mA continuous current limit and a 2.2 Ohm max DC resistance. At 170 mA, the DCR drops 0.37 V and dissipates 64 mW of copper loss — the self-heating stays low in a standard 1812 footprint, but the current rating is the hard ceiling for DC bias before inductance rolls off. ## Unshielded construction and self-resonant frequency Unshielded means the magnetic field couples into nearby traces or components — keep a keep-out zone around this inductor or use a shielded alternative if the layout is dense. The self-resonant frequency is 7.5 MHz; above that the device behaves capacitively and stops acting as an inductor. The Q factor is 35 at 1 MHz, typical for a ferrite-core wirewound in this package size. ## 1812 SMD footprint and operating range The ferrite core and wirewound construction suit general-purpose filtering and DC-DC converter output chokes. ## Active production — no end-of-life signal The part is a current-production catalog item, sourced through franchised and independent distribution.","metaTitle":"Murata LQH43MN820J03L 82 µH Inductor, 170 mA, 1812","metaDescription":"Murata LQH43MN820J03L drum core wirewound inductor, 82 µH ±5%, 170 mA, 2.2 Ohm DCR, 1812 SMD. Active production, 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":"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":"LQH43MN","DC Resistance (DCR)":"2.2Ohm Max","Current Rating (Amps)":"170 mA","Height - Seated (Max)":"0.110\\\" (2.80mm)","Operating Temperature":"-40°C ~ 85°C","Supplier Device Package":"1812","Frequency - Self Resonant":"7.5MHz","Current - Saturation (Isat)":"-","Inductance Frequency - Test":"1 MHz"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.4500","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/d1493e4ce66984c31e9b5c6bbb04d9e5.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to LQH43MN820J03L?","answer":"Other 1812-size 82 µH wirewound inductors from different manufacturers may fit the same footprint, but the DCR, current rating, and self-resonant frequency differ — verify the parametric match against your BOM before substituting."},{"question":"What compliance documentation does Murata provide for LQH43MN820J03L?","answer":"Murata typically supplies RoHS and REACH compliance declarations for the LQH43 series."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/murata-electronics/LQH43MN820J03L","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/murata-electronics/LQH43MN820J03L 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}}