{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LQH43CN2R2M33L","brand":"Murata Electronics","brandSlug":"murata-electronics","productSlug":"LQH43CN2R2M33L","canonicalUrl":"https://icboms.com/murata-electronics/LQH43CN2R2M33L","factsUrl":"https://icboms.com/api/mcp/products/LQH43CN2R2M33L","rawCanonicalId":null},"summary":{"shortDescription":"Murata Electronics LQH43 series, Drum Core Wirewound inductor, unshielded, 2.2 µH, ±20%, 2.1 A, 61 mOhm DCR, 1812 (4532 Metric) surface mount.","salesMarkdown":"## What the 2.1 A rating means for your power rail The LQH43CN2R2M33L is a drum-core wirewound inductor in the LQH43 series, rated 2.2 µH at 1 MHz test frequency with ±20% tolerance. The 2.1 A current rating is the DC current at which the inductance typically drops by 10% due to core saturation — not the thermal limit. At that bias point the actual in-circuit inductance may sit around 1.8 µH, so your ripple current and transient response calculations need to use the saturated value, not the nominal open-circuit number. The 61 mOhm max DCR sets the I²R conduction loss at 0.27 W at full rated current. ## Footprint and placement constraints The unshielded construction means the magnetic field radiates from the drum core — keep sensitive analog or RF traces at least 5 mm away on the same layer, and avoid placing it directly under a ferrite-bead-filtered supply rail on the opposite side of the board. The self-resonant frequency is 60 MHz. Below that frequency the part behaves as an inductor; above it the impedance becomes capacitive. For a buck converter switching at 1-2 MHz, the 60 MHz SRF is well clear of the switching harmonics, so the inductor maintains its inductive character across the relevant frequency range. ## Sourcing status and procurement posture No pin-compatible second-source is documented in the family, so the BOM line is single-sourced to this Murata order code.","metaTitle":"Murata LQH43CN2R2M33L Drum Core Wirewound Inductor, 2.2 µH","metaDescription":"Murata LQH43CN2R2M33L 2.2 µH unshielded wirewound inductor, 2.1 A rated current, 61 mOhm DCR, 1812 footprint. Active production. Sourced to order against RFQ.","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)":"61mOhm Max","Current Rating (Amps)":"2.1 A","Height - Seated (Max)":"0.110\\\" (2.80mm)","Operating Temperature":"-40°C ~ 85°C","Supplier Device Package":"1812 (4532 Metric)","Frequency - Self Resonant":"60MHz","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/e4ffd95d57b880d736712d74c6ca4549.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the tolerance and DC resistance of this inductor?","answer":"The inductance tolerance is ±20%, and the maximum DC resistance is 61 mOhm."},{"question":"What compliance documentation does Murata provide for LQH43CN2R2M33L?","answer":"The part carries the standard Murata product status as Active. RoHS and REACH compliance documentation is available through the Murata datasheet and the distributor's compliance portal; no UL or IEC certification is listed in the spec record."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/murata-electronics/LQH43CN2R2M33L","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/murata-electronics/LQH43CN2R2M33L 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}}