{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LQH43NN391J03L","brand":"Murata Electronics","brandSlug":"murata-electronics","productSlug":"LQH43NN391J03L","canonicalUrl":"https://icboms.com/murata-electronics/LQH43NN391J03L","factsUrl":"https://icboms.com/api/mcp/products/LQH43NN391J03L","rawCanonicalId":null},"summary":{"shortDescription":"Murata Electronics LQH43 series drum core wirewound inductor, unshielded, 390 µH ±5%, 90 mA, 9.7 Ohm DCR, 1812 (4532 Metric) SMD.","salesMarkdown":"## 390 µH drum core wirewound inductor for signal filtering The Murata LQH43NN391J03L is a drum core wirewound inductor in the LQH43 series, unshielded, with a ferrite core and a nominal inductance of 390 µH at 1 MHz test frequency. Rated for 90 mA continuous current with a maximum DC resistance of 9.7 Ohm, this part suits low-current DC-DC converter output filters or signal-line chokes where the inductance value and DCR trade-off is acceptable. The self-resonant frequency of 3.3 MHz and Q factor of 40 at 796 kHz define the useful band — above SRF the impedance becomes capacitive, so the inductor is best applied below 2–3 MHz. ## 1812 footprint and surface-mount integration Available in tape-and-reel or cut-tape packaging — the TR suffix on the order code indicates reel quantity for automated pick-and-place; the CT option suits prototype or low-volume builds.","metaTitle":"Murata LQH43NN391J03L Inductor, 390 µH, 90 mA, 1812","metaDescription":"Murata LQH43NN391J03L drum core wirewound inductor, 390 µH ±5%, 90 mA, 9.7 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":"40 @ 796kHz","Shielding":"Unshielded","Tolerance":"±5%","Inductance":"390 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)":"9.7Ohm Max","Current Rating (Amps)":"90 mA","Height - Seated (Max)":"0.110\\\" (2.80mm)","Operating Temperature":"-40°C~105°C","Supplier Device Package":"1812 (4532 Metric)","Frequency - Self Resonant":"3.3MHz","Current - Saturation (Isat)":"-","Inductance Frequency - Test":"1 MHz"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.6000","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/d0d6b1d39c76e30b3c05600906460c39.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the inductance tolerance and test frequency for LQH43NN391J03L?","answer":"The inductance is 390 µH ±5%, tested at 1 MHz."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/murata-electronics/LQH43NN391J03L","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/murata-electronics/LQH43NN391J03L 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}}