{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LQH43MN331K03L","brand":"Murata Electronics","brandSlug":"murata-electronics","productSlug":"LQH43MN331K03L","canonicalUrl":"https://icboms.com/murata-electronics/LQH43MN331K03L","factsUrl":"https://icboms.com/api/mcp/products/LQH43MN331K03L","rawCanonicalId":null},"summary":{"shortDescription":"Murata Electronics LQH43 series drum core wirewound inductor, 330 µH, ±10%, 95 mA, 8.2 Ohm DCR, 1812 (4532 Metric) surface mount, unshielded.","salesMarkdown":"## 330 µH wirewound for signal filtering and bias-T applications The Murata LQH43MN331K03L is a drum core wirewound inductor with a nominal inductance of 330 µH at 1 MHz test frequency, ±10% tolerance. Rated current is 95 mA, with a maximum DC resistance of 8.2 Ohm — the DCR sets the I²R heating floor, so the 95 mA rating already accounts for self-heating at room ambient. Unshielded construction means the magnetic field extends beyond the component body — keep adjacent traces and low-impedance loops at least one part-width away to avoid coupling into the inductor's flux path. ## Q factor and self-resonant frequency Q is 40 minimum at 796 kHz — this is the figure of merit for the inductor's AC losses at that frequency. The self-resonant frequency is 3.6 MHz; above that the inductor behaves capacitively, so the part is best suited for filtering and DC bias applications below 1–2 MHz where the Q peak and the inductive region overlap. ## Board-fit and storage Surface-mount reflow profile follows standard lead-free solder paste recommendations for a ferrite-core component — no special bake-out required unless the tape-and-reel packaging has been exposed to high humidity beyond the manufacturer's floor-life limit. Available in cut tape or full reel quantities. The unshielded body has no metallic top coat, so pick-and-place vision systems should use the body outline for centring, not a reflective fiducial.","metaTitle":"Murata LQH43MN331K03L 330 µH Unshielded Inductor, 95 mA","metaDescription":"Murata LQH43MN331K03L drum core wirewound inductor, 330 µH, 95 mA, 8.2 Ohm DCR, 1812 package. Active production. Sourced to order against 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":"40 @ 796kHz","Shielding":"Unshielded","Tolerance":"±10%","Inductance":"330 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)":"8.2Ohm Max","Current Rating (Amps)":"95 mA","Height - Seated (Max)":"0.110\\\" (2.80mm)","Operating Temperature":"-40°C ~ 85°C","Supplier Device Package":"1812","Frequency - Self Resonant":"3.6MHz","Current - Saturation (Isat)":"-","Inductance Frequency - Test":"1 MHz"}},"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 DC resistance and how does it affect the current rating?","answer":"Maximum DCR is 8.2 Ohm. At 95 mA, the I²R loss is about 74 mW — within the 85°C ambient rating, but the temperature rise inside a dense PCB layout may be higher if adjacent components add thermal load. The 95 mA rating is the continuous current at which the inductance typically drops by 10% due to core saturation, not the thermal limit."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/murata-electronics/LQH43MN331K03L","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/murata-electronics/LQH43MN331K03L 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}}