{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LQH43MN2R7M03L","brand":"Murata Electronics","brandSlug":"murata-electronics","productSlug":"LQH43MN2R7M03L","canonicalUrl":"https://icboms.com/murata-electronics/LQH43MN2R7M03L","factsUrl":"https://icboms.com/api/mcp/products/LQH43MN2R7M03L","rawCanonicalId":null},"summary":{"shortDescription":"Murata Electronics LQH43 series, Drum Core Wirewound Inductor, 2.7 µH, ±20%, 500 mA, 320 mOhm DCR, Unshielded, 1812 (4532 Metric), Surface Mount, Tape & Reel.","salesMarkdown":"## 2.7 µH drum core for DC-DC filtering The Murata LQH43MN2R7M03L is a wirewound drum core inductor in the LQH43 series, built on a ferrite core and unshielded. It delivers 2.7 µH ±20% inductance with a 500 mA current rating and a 320 mOhm maximum DCR — numbers that matter when you're sizing the output filter for a buck converter or a low-current rail. The unshielded construction means magnetic flux radiates — keep it away from sensitive analog traces or place it with a ground plane underneath to contain the field. ## Self-resonant frequency and Q factor The self-resonant frequency is 53 MHz, so the inductor behaves as an inductor well into the HF band. Above that frequency the parasitic capacitance between windings dominates and the impedance turns capacitive — factor this into the switching node of a 1-10 MHz DC-DC converter. The Q peak is usually around the self-resonant frequency; if your filter requires a sharp notch, the Q at the operating frequency sets the insertion loss. ## Temperature range and rework handling The ferrite core material's permeability drifts with temperature; expect inductance to drop by roughly 10-20% at the upper end, which the ±20% tolerance already absorbs. Sourced through independent distribution channels. No pin-compatible second-source is recorded; the LQH43 series footprint is proprietary to Murata's ferrite core geometry.","metaTitle":"Murata LQH43MN2R7M03L Drum Core Inductor, 2.7 µH, 500 mA","metaDescription":"Murata LQH43MN2R7M03L wirewound drum core inductor, 2.7 µH ±20%, 500 mA rated current, 320 mOhm DCR max. Active production, 1812 SMD package. 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)","Ratings":"-","Q @ Freq":"20 @ 1MHz","Shielding":"Unshielded","Tolerance":"±20%","Inductance":"2.7 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)":"320mOhm Max","Current Rating (Amps)":"500 mA","Height - Seated (Max)":"0.110\\\" (2.80mm)","Operating Temperature":"-40°C~85°C","Supplier Device Package":"1812","Frequency - Self Resonant":"53MHz","Current - Saturation (Isat)":"-","Inductance Frequency - Test":"1 MHz"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.2895","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/d1493e4ce66984c31e9b5c6bbb04d9e5.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the inductance and current rating of LQH43MN2R7M03L?","answer":"It is a 2.7 µH inductor rated for 500 mA continuous current, with a maximum DC resistance of 320 mOhm. The tolerance is ±20%."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/murata-electronics/LQH43MN2R7M03L","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/murata-electronics/LQH43MN2R7M03L 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}}