{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LQH43MN221K03L","brand":"Murata Electronics","brandSlug":"murata-electronics","productSlug":"LQH43MN221K03L","canonicalUrl":"https://icboms.com/murata-electronics/LQH43MN221K03L","factsUrl":"https://icboms.com/api/mcp/products/LQH43MN221K03L","rawCanonicalId":null},"summary":{"shortDescription":"Murata LQH43 series, Drum Core Wirewound Inductor, LQH43MN221K03L, 220 µH, ±10%, 110 mA, 5.4 Ohm DCR, Unshielded, 1812 (4532 Metric), Surface Mount.","salesMarkdown":"## 220 µH at 110 mA — DC bias and loss budget The LQH43MN221K03L: Rated at 220 µH ±10% with a 110 mA DC current limit. The 5.4 ohm maximum DCR sets the I²R conduction loss: at full rated current the self-heating is roughly 65 mW, which is manageable in most 1812 board layouts but should be factored into the thermal budget if ambient runs near the 85°C ceiling. ## Frequency range — Q and self-resonance The Q factor is 40 at 796 kHz, and the self-resonant frequency is 4.5 MHz. This means the inductor behaves as a pure inductance up to roughly 1–2 MHz; above that the parasitic capacitance starts to dominate, and the impedance becomes capacitive past 4.5 MHz. Use it for switching frequencies in the low hundreds of kHz to a few MHz — typical for DC-DC output filters or EMI suppression in that band. ## 1812 footprint — pick-and-place ready The unshielded ferrite drum core construction means the magnetic field is not contained — adjacent traces carrying sensitive analog signals should be kept at least one package width away to avoid coupling. ## Industrial temperature range — not AEC-Q rated This is the standard industrial temperature grade; the part is not qualified to AEC-Q200 automotive stress tests. For under-hood or cabin electronics requiring extended temperature or vibration qualification, look at Murata's automotive-grade LQH43 series variants (AEC-Q200 listed).","metaTitle":"Murata LQH43MN221K03L Inductor, 220 µH, 110 mA, 1812","metaDescription":"Murata LQH43MN221K03L wirewound drum core inductor, 220 µH, 110 mA, 5.4 ohm DCR, 1812 SMD. Active production, sourced 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":"±10%","Inductance":"220 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)":"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":"$0.4300","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/d1493e4ce66984c31e9b5c6bbb04d9e5.pdf","sourceUrl":null},"ai":{"faq":[{"question":"How can I order LQH43MN221K03L or check availability?","answer":"We source the LQH43MN221K03L through authorized and independent distribution channels. Submit an RFQ with your target quantity and required delivery window — we confirm current pricing and lead time at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/murata-electronics/LQH43MN221K03L","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/murata-electronics/LQH43MN221K03L 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}}