{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LQH43MN221J03L","brand":"Murata Electronics","brandSlug":"murata-electronics","productSlug":"LQH43MN221J03L","canonicalUrl":"https://icboms.com/murata-electronics/LQH43MN221J03L","factsUrl":"https://icboms.com/api/mcp/products/LQH43MN221J03L","rawCanonicalId":null},"summary":{"shortDescription":"Murata Electronics LQH43 series drum core wirewound inductor, unshielded, 220 µH ±5%, 110 mA, 5.4 Ohm DCR, 1812 (4532 Metric) SMD.","salesMarkdown":"## Active production — 220 µH unshielded inductor for general-purpose filtering The Murata LQH43MN221J03L is an active-production drum core wirewound inductor in the LQH43 series, rated 220 µH ±5% with a 110 mA current rating and 5.4 Ohm maximum DCR. The 1812 (4532 Metric) surface-mount package and ferrite core suit it for DC-DC converter output filtering, EMI suppression, and signal-line decoupling where the 110 mA ceiling and 5.4 Ohm series resistance are within the loss budget. ## Q factor, self-resonant frequency, and usable band A minimum Q of 40 at 796 kHz and a self-resonant frequency of 4.5 MHz mean the inductor maintains useful Q up to a few MHz — above that the parasitic capacitance dominates and the impedance rolls off. The 1 MHz test frequency for the inductance value sits well below the SRF, so the 220 µH figure is representative in the low-MHz switching range typical of small DC-DC converters.","metaTitle":"Murata LQH43MN221J03L 220 µH Unshielded Inductor, 110 mA","metaDescription":"Murata LQH43MN221J03L drum core wirewound inductor, 220 µH ±5%, 110 mA, 5.4 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":"220 µH","Mounting Type":"Surface Mount","Package / Case":"1812 (4532 Metric)","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)":"5.4Ohm Max","Current Rating (Amps)":"110 mA","Height - Seated (Max)":"0.110\\\" (2.80mm)","Operating Temperature":"-40°C ~ 85°C","Supplier Device Package":"1812","Frequency - Self Resonant":"4.5MHz","Current - Saturation (Isat)":"-","Inductance Frequency - Test":"1 MHz"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.5000","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/d1493e4ce66984c31e9b5c6bbb04d9e5.pdf","sourceUrl":null},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/murata-electronics/LQH43MN221J03L","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/murata-electronics/LQH43MN221J03L 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}}