{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LQH43NZ242K03L","brand":"Murata Electronics","brandSlug":"murata-electronics","productSlug":"LQH43NZ242K03L","canonicalUrl":"https://icboms.com/murata-electronics/LQH43NZ242K03L","factsUrl":"https://icboms.com/api/mcp/products/LQH43NZ242K03L","rawCanonicalId":null},"summary":{"shortDescription":"Murata Electronics LQH3 series wirewound inductor, 2.4 mH, ±10%, 25 mA, 53 Ohm DCR, unshielded, 1812 (4532 Metric) SMD, tape and reel.","salesMarkdown":"## 2.4 mH wirewound — filtering and bias-current limits The Murata LQH43NZ242K03L is a 2.4 mH wirewound inductor in the LQH3 series, built on a ferrite core and housed in an 1812 (4532 Metric) surface-mount package. The 25 mA current rating is the DC bias at which the inductance typically drops by 10 % — push beyond that and the effective inductance falls off, so the filter corner shifts. With a 53 Ohm maximum DCR, the copper loss at rated current is about 33 mW, which is within the self-heating budget for the 105 °C upper operating limit. ## Q factor and self-resonant frequency — where it still works as an inductor The Q factor is 40 at 252 kHz, meaning the inductive reactance is 40 times the effective series resistance at that frequency — good efficiency for resonant tank circuits or EMI filter traps tuned near that band. The self-resonant frequency is 1.2 MHz; above that the parasitic winding capacitance dominates and the part behaves capacitively. For a low-pass filter, keep the cutoff well below 1.2 MHz to stay in the inductive region. ## Unshielded construction — board layout consideration This is an unshielded inductor, so the magnetic field radiates from the core. Keep sensitive analog traces or high-impedance nodes at least two part-widths away to avoid coupled noise.","metaTitle":"Murata LQH43NZ242K03L 2.4 mH Wirewound Inductor, 1812","metaDescription":"Murata LQH43NZ242K03L wirewound inductor, 2.4 mH ±10%, 25 mA, 53 Ohm DCR, 1812 SMD. Active production. Quoted 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":"Wirewound","Series":"LQH3","Package":"Tape & Reel (TR)","Ratings":"-","Features":"-","Q @ Freq":"40 @ 252kHz","Shielding":"Unshielded","Tolerance":"±10%","Inductance":"2.4 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)","DC Resistance (DCR)":"53Ohm Max","Current Rating (Amps)":"25 mA","Height - Seated (Max)":"0.110\\\" (2.80mm)","Operating Temperature":"-40°C ~ 105°C","Supplier Device Package":"1812","Frequency - Self Resonant":"1.2MHz","Current - Saturation (Isat)":"-","Inductance Frequency - Test":"1 MHz"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.2920","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/bb0b74c8fddb8276f9173381ac23c293.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Where can I buy LQH43NZ242K03L and how is it quoted?","answer":"The LQH43NZ242K03L is an active Murata part available through independent distribution."},{"question":"What is the inductance tolerance and test frequency for LQH43NZ242K03L?","answer":"The inductance is 2.4 mH with a ±10 % tolerance, tested at 1 MHz. The Q factor is measured at 252 kHz, where it is specified as 40 minimum."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/murata-electronics/LQH43NZ242K03L","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/murata-electronics/LQH43NZ242K03L 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}}