{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LQH43MN680K03L","brand":"Murata Electronics","brandSlug":"murata-electronics","productSlug":"LQH43MN680K03L","canonicalUrl":"https://icboms.com/murata-electronics/LQH43MN680K03L","factsUrl":"https://icboms.com/api/mcp/products/LQH43MN680K03L","rawCanonicalId":null},"summary":{"shortDescription":"Murata Electronics LQH43 series, Drum Core Wirewound Inductor, 68 µH, ±10%, 180 mA, 1.9 Ω DCR, Unshielded, 1812 (4532 Metric), Surface Mount.","salesMarkdown":"## 68 µH at 180 mA — the filter spec ceiling The LQH43MN680K03L: Rated 68 µH ±10 % at 1 MHz test frequency, with a DC current rating of 180 mA. Above that current the ferrite core begins to saturate and the effective inductance rolls off — the 180 mA figure is the saturation-limited ceiling, not a thermal limit. DC resistance is 1.9 Ω max; at full rated current the I²R loss is 61.6 mW, which sets the self-heating floor before core losses add. The Q factor of 35 at 1 MHz tells you the energy storage efficiency is moderate — expect noticeable core losses if the ripple current pushes the AC flux density above 50 mT. Self-resonant frequency is 8.4 MHz. Above this point the winding capacitance dominates and the part behaves capacitively — keep the operating frequency below 4 MHz to stay clear of the SRF knee. ## Unshielded drum core — board integration note The unshielded ferrite drum core radiates the magnetic field openly. On a dense PCB, keep a 2–3 mm keep-out zone around the part if there are sensitive analog traces, other inductors, or a nearby RF section — the stray field couples into adjacent loops. The land pattern matches the generic 1812 solder pad layout; no special thermal pad or via array is required. The ferrite Curie temperature is well above 85°C, but the wire insulation enamel sets the upper bound; do not exceed 85°C ambient plus self-heating.","metaTitle":"Murata LQH43MN680K03L 68 µH Unshielded Inductor, 180 mA","metaDescription":"Murata LQH43MN680K03L drum core wirewound inductor, 68 µH ±10%, 180 mA rated, 1.9 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":"±10%","Inductance":"68 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)":"1.9Ohm Max","Current Rating (Amps)":"180 mA","Height - Seated (Max)":"0.110\\\" (2.80mm)","Operating Temperature":"-40°C ~ 85°C","Supplier Device Package":"1812","Frequency - Self Resonant":"8.4MHz","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 compliance documentation does Murata provide for LQH43MN680K03L?","answer":"The part is RoHS-compliant by Murata's standard declaration. No UL, IEC, or AEC-Q200 automotive qualification is listed in the specifications — this is a general-purpose industrial-grade inductor."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/murata-electronics/LQH43MN680K03L","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/murata-electronics/LQH43MN680K03L 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}}