{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LQH43MN121J03L","brand":"Murata Electronics","brandSlug":"murata-electronics","productSlug":"LQH43MN121J03L","canonicalUrl":"https://icboms.com/murata-electronics/LQH43MN121J03L","factsUrl":"https://icboms.com/api/mcp/products/LQH43MN121J03L","rawCanonicalId":null},"summary":{"shortDescription":"Murata Electronics LQH43 series, Drum Core Wirewound Inductor, LQH43MN121J03L, 120 µH, 150 mA, 1812 (4532 Metric) SMD.","salesMarkdown":"## 120 µH unshielded wirewound in 1812 The Murata LQH43MN121J03L is a drum-core wirewound inductor with a nominal inductance of 120 µH at a test frequency of 1 MHz, rated for 150 mA continuous current. ## Self-resonant and Q factor A self-resonant frequency (SRF) of 6.2 MHz means the inductor behaves inductively up to that point; above SRF the impedance turns capacitive, so the part is suited for filtering and DC-DC conversion up to the low-MHz range. The Q factor of 40 at 796 kHz indicates moderate AC losses at that frequency — adequate for general-purpose filtering and decoupling in power supply outputs and signal conditioning where the Q is not the primary selection constraint.","metaTitle":"Murata LQH43MN121J03L 120 µH Inductor, 150 mA, 1812","metaDescription":"Murata LQH43MN121J03L unshielded wirewound inductor, 120 µH ±5%, 150 mA rated current, 3 Ohm DCR, 1812 SMD package. 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":"40 @ 796kHz","Shielding":"Unshielded","Tolerance":"±5%","Inductance":"120 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)":"3Ohm Max","Current Rating (Amps)":"150 mA","Height - Seated (Max)":"0.110\\\" (2.80mm)","Operating Temperature":"-40°C ~ 85°C","Supplier Device Package":"1812","Frequency - Self Resonant":"6.2MHz","Current - Saturation (Isat)":"-","Inductance Frequency - Test":"1 MHz"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.4500","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/d1493e4ce66984c31e9b5c6bbb04d9e5.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LQH43MN121J03L/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy LQH43MN121J03L and how do I get a price?","answer":"The LQH43MN121J03L is an active part sourced through independent distribution."},{"question":"What is the DC resistance of LQH43MN121J03L and why does it matter?","answer":"The maximum DCR is 3 Ohm. At the rated 150 mA current, this resistance produces 67.5 mW of heat; the figure is relevant for estimating conduction loss in power supply output filters or DC-DC converter inductors."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/murata-electronics/LQH43MN121J03L","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/murata-electronics/LQH43MN121J03L 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}}