{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LQH43NH181J03L","brand":"Murata Electronics","brandSlug":"murata-electronics","productSlug":"LQH43NH181J03L","canonicalUrl":"https://icboms.com/murata-electronics/LQH43NH181J03L","factsUrl":"https://icboms.com/api/mcp/products/LQH43NH181J03L","rawCanonicalId":null},"summary":{"shortDescription":"Murata Electronics LQH43 series, Drum Core Wirewound Inductor, 180 µH, ±5%, 110 mA, 4.08 Ohm DCR, AEC-Q200, 1812 (4532 Metric), Tape & Reel.","salesMarkdown":"## 180 µH wirewound inductor for automotive and industrial DC-DC filtering The Murata LQH43NH181J03L is a drum core, wirewound inductor in the LQH43 series, rated 180 µH ±5% at 1 MHz test frequency. It carries a continuous current rating of 110 mA with a maximum DC resistance of 4.08 Ohm — the I²R loss at full rated current is about 49 mW, well within the 125°C operating ceiling. ## Parametric fit for power-line and signal filtering The 180 µH inductance at 110 mA gives a stored energy of 1.1 µJ — enough to smooth ripple in a low-current DC-DC converter output or filter EMI on a sensor supply rail. The unshielded construction means the magnetic field extends beyond the core; keep sensitive traces or other magnetics at least one part-width away to avoid coupling. Self-resonant frequency is 5 MHz — above this point the inductor behaves as a capacitor. For a buck converter switching at 500 kHz, the 180 µH value provides good attenuation of the switching fundamental and its second harmonic before the SRF rolls off the impedance. Q factor of 40 at 796 kHz indicates moderate AC losses at that frequency — useful for resonant tank circuits or filter stages where the Q sets the bandwidth. The ferrite core material is optimised for the 1 MHz test frequency and the 5 MHz SRF window. The surface-mount package is compatible with standard pick-and-place equipment and reflow soldering profiles. The tape-and-reel packaging (Cut Tape also available) suits both prototyping and production volumes. The unshielded drum core design means the inductor's magnetic field is not contained by a ferrite shield — adjacent traces carrying high-speed signals or other inductors should be spaced at least 5 mm away to avoid parasitic coupling that shifts the effective inductance. AEC-Q200 qualification is the key compliance signal for automotive BOMs — it satisfies the PPAP documentation requirement for Tier-1 and OEM production.","metaTitle":"Murata LQH43NH181J03L Inductor, 180 µH, 110 mA, AEC-Q200","metaDescription":"Murata LQH43NH181J03L drum core wirewound inductor, 180 µH ±5%, 110 mA, 4.08 Ohm DCR, AEC-Q200 qualified. Active production. Request a quote.","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":"AEC-Q200","Features":"-","Q @ Freq":"40 @ 796kHz","Shielding":"Unshielded","Tolerance":"±5%","Inductance":"180 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":"LQH43NH","DC Resistance (DCR)":"4.08Ohm Max","Current Rating (Amps)":"110 mA","Height - Seated (Max)":"0.110\\\" (2.80mm)","Operating Temperature":"-40°C~125°C","Supplier Device Package":"1812","Frequency - Self Resonant":"5MHz","Current - Saturation (Isat)":"-","Inductance Frequency - Test":"1 MHz"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.6900","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/b8fe98626664ecf0068858b1162f6220.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the inductance and current rating of LQH43NH181J03L?","answer":"The LQH43NH181J03L is rated 180 µH ±5% at 1 MHz test frequency with a continuous current rating of 110 mA and a maximum DC resistance of 4.08 Ohm."},{"question":"Is LQH43NH181J03L automotive qualified?","answer":"Its operating temperature range is -40°C to 125°C."},{"question":"What package size is LQH43NH181J03L?","answer":"It is supplied in tape-and-reel or cut-tape packaging."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/murata-electronics/LQH43NH181J03L","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/murata-electronics/LQH43NH181J03L 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}}