{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LQH43NN152K03L","brand":"Murata Electronics","brandSlug":"murata-electronics","productSlug":"LQH43NN152K03L","canonicalUrl":"https://icboms.com/murata-electronics/LQH43NN152K03L","factsUrl":"https://icboms.com/api/mcp/products/LQH43NN152K03L","rawCanonicalId":null},"summary":{"shortDescription":"Murata Electronics LQH43 series, Drum Core Wirewound Inductor, 1.5 mH, ±10%, 40 mA, Unshielded, 1812 (4532 Metric) SMD.","salesMarkdown":"## 1.5 mH at 40 mA — the limiting axis for this LQH43 inductor The Murata LQH43NN152K03L is a drum-core wirewound inductor from the LQH43 series, rated 1.5 mH ±10% with a continuous current ceiling of 40 mA. The 37 Ohm max DC resistance means the IR drop at full rated current is about 1.48 V — that is the self-heating floor before ambient temperature is factored in, and it sets the voltage budget for the series resistor in an LC filter or the DC bias loss in a choke application. ## Unshielded ferrite core — magnetic coupling is a layout variable The ferrite core is unshielded, so the magnetic field extends beyond the component body. In a dense 1812 SMD layout, adjacent traces carrying high-frequency signals may pick up coupled noise — keep a keep-out zone around the inductor or orient it orthogonal to sensitive traces. The self-resonant frequency is 1.6 MHz; above that the inductive reactance rolls off and the part behaves capacitively, so the usable filtering band stops well below that point. Q factor is specified at 40 at 252 kHz — that is the efficiency sweet spot for this winding. Below 100 kHz the Q drops as core losses dominate; above 1 MHz the winding AC resistance rises and the Q falls again. For a resonant tank or a tuned filter, the operating frequency should sit near the Q peak. The 1812 footprint is a standard size shared across the LQH43 family, so a different inductance value in the same series can be swapped in without a board spin if the design requirements shift.","metaTitle":"Murata LQH43NN152K03L Inductor, 1.5 mH, 40 mA, 1812","metaDescription":"Murata LQH43NN152K03L drum core wirewound inductor, 1.5 mH ±10%, 40 mA rated current, 37 Ohm DCR, 1812 SMD package. Active lifecycle. 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) Cut Tape (CT)","Ratings":"-","Q @ Freq":"40 @ 252kHz","Shielding":"Unshielded","Tolerance":"±10%","Inductance":"1.5 mH","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":"LQH43NN","DC Resistance (DCR)":"37Ohm Max","Current Rating (Amps)":"40 mA","Height - Seated (Max)":"0.110\\\" (2.80mm)","Operating Temperature":"-40°C ~ 105°C","Supplier Device Package":"1812 (4532 Metric)","Frequency - Self Resonant":"1.6MHz","Current - Saturation (Isat)":"-","Inductance Frequency - Test":"1 kHz"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.2818","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/d0d6b1d39c76e30b3c05600906460c39.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the inductance and current rating of this inductor?","answer":"The LQH43NN152K03L is rated at 1.5 mH ±10% with a maximum DC current of 40 mA. The DC resistance is 37 Ohms max, which determines the self-heating at full rated current."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/murata-electronics/LQH43NN152K03L","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/murata-electronics/LQH43NN152K03L 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}}