{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LQH43CN100K03L","brand":"Murata Electronics","brandSlug":"murata-electronics","productSlug":"LQH43CN100K03L","canonicalUrl":"https://icboms.com/murata-electronics/LQH43CN100K03L","factsUrl":"https://icboms.com/api/mcp/products/LQH43CN100K03L","rawCanonicalId":null},"summary":{"shortDescription":"Murata Electronics LQH43 series, Drum Core Wirewound Inductor, 10 µH, ±10%, 650 mA, 240 mOhm DCR, Unshielded, 1812 (4532 Metric) surface mount.","salesMarkdown":"## 1812 wirewound choke for DC-DC input/output filtering The LQH43CN100K03L is a Murata drum-core wirewound inductor from the LQH43 series, offering 10 µH inductance with ±10 % tolerance in an unshielded 1812 (4532 metric) surface-mount package. Rated at 650 mA DC with a maximum DC resistance of 240 mOhm, the I²R loss at full current sits around 100 mW — the ferrite core and 85 °C temperature rating handle that thermal load without derating in most ambient conditions. ## Self-resonant frequency and usable band The self-resonant frequency is 23 MHz, tested at 1 MHz. Above SRF the impedance turns capacitive, so this part is a fit for switching-regulator filtering up to a few MHz — not for RF tank circuits or VCO chokes where the operating frequency must stay well below SRF. Unshielded construction means the external field couples into nearby traces — keep sensitive analog or feedback loops at least a few millimeters away on the PCB layout, or switch to a shielded variant in the same footprint if radiated noise becomes a concern. ## Active production — sourcing and traceability The part is available through authorized distribution channels as well as independent surplus inventory. For procurement teams covering a BOM line, the 1812 footprint and tape-and-reel packaging (Cut Tape also offered) mean standard pick-and-place setup. Date-code consistency and lot traceability are confirmed at the time of RFQ — the laser etch on the body is clean and matches Murata's factory marking standard.","metaTitle":"Murata LQH43CN100K03L 10 µH Wirewound Inductor, 650 mA","metaDescription":"Murata LQH43CN100K03L drum core wirewound inductor, 10 µH ±10 %, 650 mA, 240 mOhm DCR, 1812 SMD. Active production. 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":"-","Shielding":"Unshielded","Tolerance":"±10%","Inductance":"10 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":"LQH43CN","DC Resistance (DCR)":"240mOhm Max","Current Rating (Amps)":"650 mA","Height - Seated (Max)":"0.110\\\" (2.80mm)","Operating Temperature":"-40°C ~ 85°C","Supplier Device Package":"1812","Frequency - Self Resonant":"23MHz","Current - Saturation (Isat)":"-","Inductance Frequency - Test":"1 MHz"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.3800","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/285342e99fdeeb4e955f855a995fa4ac.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Where can I buy LQH43CN100K03L and get a price?","answer":"The LQH43CN100K03L is sourced to order against your BOM quantity through authorized and independent distribution."},{"question":"What is the self-resonant frequency and why does it matter?","answer":"The self-resonant frequency is 23 MHz. Above this frequency the inductor behaves capacitively, so the practical operating range for filtering or energy storage is up to a few MHz — well below the SRF. For circuits switching above 10 MHz, a part with a higher SRF would be needed."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/murata-electronics/LQH43CN100K03L","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/murata-electronics/LQH43CN100K03L 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}}