{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LQH43NN681K03L","brand":"Murata Electronics","brandSlug":"murata-electronics","productSlug":"LQH43NN681K03L","canonicalUrl":"https://icboms.com/murata-electronics/LQH43NN681K03L","factsUrl":"https://icboms.com/api/mcp/products/LQH43NN681K03L","rawCanonicalId":null},"summary":{"shortDescription":"Murata Electronics LQH43 series drum core wirewound inductor, unshielded, 680 µH ±10%, 65 mA, 17 Ohm DCR, 1812 (4532 Metric) SMD package.","salesMarkdown":"## 680 µH at 65 mA — what the DC resistance means for your rail The LQH43NN681K03L is a drum core wirewound inductor from Murata's LQH43 series, wound on a ferrite core and unshielded. Its 680 µH inductance is tested at 1 kHz, and the 17 Ohm max DCR is the figure that governs the DC voltage drop across the part at the 65 mA rated current — at full load the inductor drops just over 1.1 V, which eats into the available supply headroom if the rail is tight. The self-resonant frequency of 2.5 MHz sets the upper bound for useful filtering — above that the inductor behaves capacitively. The Q factor of 40 at 796 kHz tells you the loss tangent in the passband is moderate; this part is sized for DC-DC output filtering or general-purpose EMI suppression where the switching frequency stays well below the SRF. ## 1812 footprint, surface-mount, unshielded — board-fit constraints The unshielded construction means the magnetic field radiates into the surrounding board area — keep sensitive traces or low-level analog circuits at least one body width away to avoid coupling.","metaTitle":"Murata LQH43NN681K03L 680 µH Wirewound Inductor, 65 mA","metaDescription":"Murata LQH43NN681K03L drum core wirewound inductor, 680 µH ±10%, 65 mA, 17 Ohm DCR, 1812 SMD. Active production, sourced to order. Request a quote.","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":"680 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)":"17Ohm Max","Current Rating (Amps)":"65 mA","Height - Seated (Max)":"0.110\\\" (2.80mm)","Operating Temperature":"-40°C~105°C","Supplier Device Package":"1812 (4532 Metric)","Frequency - Self Resonant":"2.5MHz","Current - Saturation (Isat)":"-","Inductance Frequency - Test":"1 kHz"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.3158","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/d0d6b1d39c76e30b3c05600906460c39.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Where can I buy the LQH43NN681K03L and check availability?","answer":"The LQH43NN681K03L is an active Murata part sourced through independent distribution."},{"question":"What is the inductance and current rating of the LQH43NN681K03L?","answer":"The LQH43NN681K03L is a 680 µH wirewound inductor rated for 65 mA DC with a maximum DC resistance of 17 Ohms. The self-resonant frequency is 2.5 MHz."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/murata-electronics/LQH43NN681K03L","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/murata-electronics/LQH43NN681K03L 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}}