{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LQH43NN152J03L","brand":"Murata Electronics","brandSlug":"murata-electronics","productSlug":"LQH43NN152J03L","canonicalUrl":"https://icboms.com/murata-electronics/LQH43NN152J03L","factsUrl":"https://icboms.com/api/mcp/products/LQH43NN152J03L","rawCanonicalId":null},"summary":{"shortDescription":"Murata Electronics LQH43 series, Drum Core Wirewound Inductor, LQH43NN152J03L, 1.5 mH, ±5%, 40 mA, 37 Ohm DCR, 1812 (4532 Metric), Unshielded, Ferrite Core.","salesMarkdown":"## 1.5 mH wirewound inductor for filtering and energy storage The Murata LQH43NN152J03L is a drum core, wirewound inductor in the LQH43 series, rated 1.5 mH ±5% with a 40 mA DC current rating. The 37 Ohm maximum DCR sets the I²R loss floor — at 40 mA the self-heating is about 59 mW, negligible for most filter stages, but the DCR matters for series-pass applications where the voltage drop across the inductor must stay within the rail budget. The unshielded ferrite core construction means the magnetic field extends beyond the component body — keep sensitive traces or low-level analog circuits at least one part-width away to avoid coupling. The 1.6 MHz self-resonant frequency (SRF) is the upper bound for useful inductance; above SRF the part behaves capacitively, so it suits DC-DC converter output filters and EMI suppression below 1 MHz. ## Q factor and frequency response for tuned circuits A Q factor of 40 at 252 kHz tells you the inductor's reactance-to-resistance ratio at that test frequency — high enough for resonant tank circuits in LC oscillators or bandpass filters where selectivity matters. Below 252 kHz the Q drops as the core losses increase; above it the winding AC resistance rises with skin effect, so the peak Q sits near the test point. The inductance is tested at 1 kHz, a standard low-frequency reference point. At the SRF (1.6 MHz) the effective inductance has already rolled off; for a filter designed at 100 kHz, expect the actual inductance to be within a few percent of the 1.5 mH nominal, but always verify with the impedance curve from the full datasheet if the operating frequency approaches 500 kHz.","metaTitle":"Murata LQH43NN152J03L Drum Core Inductor, 1.5 mH, 40 mA","metaDescription":"Murata LQH43NN152J03L wirewound drum core inductor, 1.5 mH ±5%, 40 mA rated current, 37 Ohm DCR max. Active production, surface mount 1812. 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":"±5%","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":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/murata-electronics/LQH43NN152J03L","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/murata-electronics/LQH43NN152J03L 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}}