{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LQH43MN330J03L","brand":"Murata Electronics","brandSlug":"murata-electronics","productSlug":"LQH43MN330J03L","canonicalUrl":"https://icboms.com/murata-electronics/LQH43MN330J03L","factsUrl":"https://icboms.com/api/mcp/products/LQH43MN330J03L","rawCanonicalId":null},"summary":{"shortDescription":"Murata Electronics LQH43 series, Drum Core Wirewound Inductor, 33 µH, ±5%, 270 mA, 1.2 Ohm DCR, Unshielded, 1812 (4532 Metric) SMD.","salesMarkdown":"## 33 µH wirewound for power rail filtering The LQH43MN330J03L is a 33 µH drum-core wirewound inductor from Murata's LQH43 series, built for surface-mount power rail filtering and DC-DC converter output smoothing. Rated at 270 mA with a maximum DC resistance of 1.2 Ohm, this part handles moderate current loads where the DCR drop and self-heating stay within the 85 °C operating ceiling. ## Unshielded construction and self-resonant frequency The unshielded ferrite core means magnetic flux radiates outside the component — keep sensitive traces or other magnetics a few millimeters away on the PCB to avoid coupling. Self-resonant frequency is 12 MHz, so the inductor behaves inductively well below that point; above 12 MHz the impedance turns capacitive, which limits use in high-frequency switching converters. Q factor of 35 at 1 MHz gives a reasonable AC loss figure for tuned circuits or filter applications at that frequency. ## 1812 SMD footprint and field-swap reality Tape-and-reel packaging suits pick-and-place assembly; cut-tape options are available for prototype or small-batch builds.","metaTitle":"Murata LQH43MN330J03L 33 µH Unshielded Inductor, 270 mA","metaDescription":"Murata LQH43MN330J03L drum core wirewound inductor, 33 µH ±5%, 270 mA, 1.2 Ohm DCR, 1812 SMD. Active production. Quoted to order.","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)","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)":"1.2Ohm Max","Current Rating (Amps)":"270 mA","Height - Seated (Max)":"0.110\\\" (2.80mm)","Operating Temperature":"-40°C ~ 85°C","Supplier Device Package":"1812","Frequency - Self Resonant":"12MHz","Current - Saturation (Isat)":"-","Inductance Frequency - Test":"1 MHz"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.5000","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/d1493e4ce66984c31e9b5c6bbb04d9e5.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the current rating and DCR of this inductor?","answer":"It is rated for 270 mA continuous current with a maximum DC resistance of 1.2 Ohm."},{"question":"What package size is LQH43MN330J03L?","answer":"Standard rework tools work — no special equipment required."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/murata-electronics/LQH43MN330J03L","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/murata-electronics/LQH43MN330J03L 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}}