{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LQH43CN2R2M03L","brand":"Murata Electronics","brandSlug":"murata-electronics","productSlug":"LQH43CN2R2M03L","canonicalUrl":"https://icboms.com/murata-electronics/LQH43CN2R2M03L","factsUrl":"https://icboms.com/api/mcp/products/LQH43CN2R2M03L","rawCanonicalId":null},"summary":{"shortDescription":"Murata Electronics LQH43 series, Drum Core Wirewound Inductor, 2.2 µH, ±20%, 900 mA, 110mOhm, Unshielded, 1812 (4532 Metric), Surface Mount.","salesMarkdown":"## 2.2 µH drum-core inductor for power rail filtering The Murata LQH43CN2R2M03L is a 2.2 µH drum-core wirewound inductor in the LQH43 series, built on a ferrite core and rated for 900 mA continuous current with a maximum DC resistance of 110 mOhm. The 1812 surface-mount footprint (4.50 mm × 3.20 mm) fits standard pick-and-place assembly, and the unshielded construction means magnetic flux radiates from the component — keep sensitive traces or adjacent inductors at least one body width away to avoid coupling. ## Current rating, DCR, and self-resonant frequency The 900 mA current rating is the saturation-limited continuous current at 25°C ambient; above this the inductance rolls off as the ferrite core approaches saturation. For a 12 V to 5 V buck converter at 500 kHz switching, this inductor handles output loads up to about 800 mA with 20-30% ripple current before the core losses dominate. 110 mOhm DCR generates I²R losses of 89 mW at full rated current — negligible for most designs, but in a high-density board the self-heating adds 5-10°C above ambient, so derate the current by 10% per 10°C above 70°C ambient. The self-resonant frequency of 60 MHz sets the upper frequency limit where the inductor behaves as an inductor rather than a capacitor. Below 20 MHz the impedance is inductive and useful for switching regulators and EMI filtering; above 60 MHz the parasitic capacitance dominates and the component becomes a low-impedance path. ## Active lifecycle and sourcing posture The 1812 package and 2.2 µH value are common enough that a second-source alternative from another manufacturer (e.g., TDK or Würth) can be qualified in parallel for dual-source risk reduction.","metaTitle":"Murata LQH43CN2R2M03L 2.2 µH Inductor, 900 mA, 1812","metaDescription":"Murata LQH43CN2R2M03L drum core wirewound inductor, 2.2 µH ±20%, 900 mA, 110 mOhm 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":"-","Shielding":"Unshielded","Tolerance":"±20%","Inductance":"2.2 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)":"110mOhm Max","Current Rating (Amps)":"900 mA","Height - Seated (Max)":"0.110\\\" (2.80mm)","Operating Temperature":"-40°C ~ 85°C","Supplier Device Package":"1812","Frequency - Self Resonant":"60MHz","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":"What is the closest alternative to LQH43CN2R2M03L?","answer":"No official pin-compatible alternative is listed from Murata within the LQH43 series. For a functional replacement with the same 2.2 µH, 900 mA, and 1812 footprint, consider the TDK VLS252012ET-2R2M or Würth 744043220 — both are shielded alternatives that reduce radiated flux but have slightly different DCR and SRF characteristics. Qualify the substitution against your circuit's ripple current and self-resonant frequency requirements."},{"question":"How do I get pricing and availability for LQH43CN2R2M03L?","answer":"Submit an RFQ through the storefront. No stock-holding claim is made — availability is verified per inquiry."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/murata-electronics/LQH43CN2R2M03L","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/murata-electronics/LQH43CN2R2M03L 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}}