{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LQH43NN330J03L","brand":"Murata Electronics","brandSlug":"murata-electronics","productSlug":"LQH43NN330J03L","canonicalUrl":"https://icboms.com/murata-electronics/LQH43NN330J03L","factsUrl":"https://icboms.com/api/mcp/products/LQH43NN330J03L","rawCanonicalId":null},"summary":{"shortDescription":"Murata Electronics LQH43 series, Drum Core Wirewound Inductor, 33 µH, ±5%, 270 mA, 1.2 Ohm DCR, 1812 (4532 Metric), Unshielded, Ferrite Core.","salesMarkdown":"## 33 µH drum-core wirewound for DC-DC filtering The Murata LQH43NN330J03L is a 33 µH drum-core wirewound inductor in the LQH43 series, built on a ferrite core with an unshielded construction. ## Self-resonant frequency and Q factor The self-resonant frequency is 12 MHz, and the Q factor measures 35 at 1 MHz test frequency. The Q value tells you the ratio of stored energy to dissipated energy at that frequency — a Q of 35 means the inductor behaves efficiently as a reactive element near 1 MHz, but above 12 MHz the parasitic capacitance dominates and the component becomes capacitive. ## 1812 SMD footprint and rework The unshielded drum-core construction means the magnetic field radiates from the body — keep sensitive traces or other magnetics at least a body-width away to avoid coupling. The 1812 footprint is large enough for hand rework with tweezers and a soldering iron; the ferrite core is not thermally fragile, so it survives hot-air removal without cracking. It is a standard-series part in the LQH43 family, widely used in power-supply filtering and signal conditioning circuits.","metaTitle":"Murata LQH43NN330J03L Inductor, 33 µH, 270 mA, 1812","metaDescription":"Murata LQH43NN330J03L drum core wirewound inductor, 33 µH ±5%, 270 mA, 1.2 Ω 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":"33 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)":"1.2Ohm Max","Current Rating (Amps)":"270 mA","Height - Seated (Max)":"0.110\\\" (2.80mm)","Operating Temperature":"-40°C ~ 105°C","Supplier Device Package":"1812 (4532 Metric)","Frequency - Self Resonant":"12MHz","Current - Saturation (Isat)":"-","Inductance Frequency - Test":"1 MHz"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.2818","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/d0d6b1d39c76e30b3c05600906460c39.pdf","sourceUrl":null},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/murata-electronics/LQH43NN330J03L","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/murata-electronics/LQH43NN330J03L 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}}