{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LQH43MN1R8M03L","brand":"Murata Electronics","brandSlug":"murata-electronics","productSlug":"LQH43MN1R8M03L","canonicalUrl":"https://icboms.com/murata-electronics/LQH43MN1R8M03L","factsUrl":"https://icboms.com/api/mcp/products/LQH43MN1R8M03L","rawCanonicalId":null},"summary":{"shortDescription":"Murata Electronics LQH43 series, Drum Core Wirewound Inductor, 1.8 µH, 500 mA, 300 mOhm DCR, Unshielded, 1812 SMD, Tape & Reel.","salesMarkdown":"## 1.8 µH drum core for DC-DC filtering Murata LQH43MN1R8M03L is a fixed 1.8 µH drum core wirewound inductor in the LQH43 series, surface-mount in an 1812 (4532 metric) package. Rated for 500 mA DC with a maximum DCR of 300 mOhm — the resistance sets the I²R heating floor, so the actual current ceiling in a 85 °C ambient is lower than 500 mA unless the board copper pulls the heat away. Unshielded construction means the flux field extends beyond the body — keep sensitive traces or another inductor at least one body-width away to avoid coupling. ## SRF and Q factor at 1 MHz Self-resonant frequency is 75 MHz — above that the part behaves capacitive, so it filters cleanly up through the low-VHF band for SMPS output ripple or signal decoupling. Q factor is 20 at 1 MHz test frequency, typical for a ferrite-core drum in this inductance range; the Q peak is usually above 10 MHz and the roll-off starts well before the SRF.","metaTitle":"Murata LQH43MN1R8M03L Drum Core Inductor, 1.8 µH, 500 mA","metaDescription":"Murata LQH43MN1R8M03L drum core wirewound inductor, 1.8 µH ±20%, 500 mA, 300 mOhm DCR, 1812 SMD, active production, available 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":"1.8 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)":"300mOhm 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":"75MHz","Current - Saturation (Isat)":"-","Inductance Frequency - Test":"1 MHz"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.2614","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/LQH43MN1R8M03L","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/murata-electronics/LQH43MN1R8M03L 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}}