{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LQH43NH821J03L","brand":"Murata Electronics","brandSlug":"murata-electronics","productSlug":"LQH43NH821J03L","canonicalUrl":"https://icboms.com/murata-electronics/LQH43NH821J03L","factsUrl":"https://icboms.com/api/mcp/products/LQH43NH821J03L","rawCanonicalId":null},"summary":{"shortDescription":"Murata Electronics LQH43 series, Drum Core Wirewound Inductor, 820 µH, ±5%, 50 mA, 17.4 Ohm DCR, Unshielded, Ferrite Core, 1812 (4532 Metric), AEC-Q200.","salesMarkdown":"## 820 µH at 50 mA — the parametric corner The LQH43NH821J03L is a drum-core wirewound inductor from Murata's LQH43 series, rated 820 µH at 1 kHz test frequency with ±5% tolerance. Its 50 mA current rating is paired with a 17.4 Ohm maximum DCR — the DC resistance dominates the I²R loss and sets the self-heating budget in this package. AEC-Q200 qualification means this part passed automotive-grade stress tests including thermal shock, vibration, and solder heat resistance per the AEC-Q200 passive-component specification. ## 1812 footprint and unshielded construction The unshielded construction means magnetic flux radiates from the core; adjacent traces carrying sensitive analog signals or high-speed edges need keep-out spacing to avoid crosstalk coupling. Supplied on tape-and-reel in cut-tape quantities — standard pick-and-place handling for the 1812 size, no special nozzle required. ## Q factor and self-resonant behaviour Q factor is 40 at 796 kHz — the ratio of inductive reactance to effective series resistance at that frequency, indicating moderate selectivity for filter applications in the low-MHz band. Self-resonant frequency is 2.2 MHz; above this point the inductor behaves capacitively, so the part is suited for DC-DC converter switching frequencies up to roughly 500 kHz where the impedance curve remains inductive.","metaTitle":"Murata LQH43NH821J03L 820 µH Inductor, AEC-Q200, 50 mA","metaDescription":"Murata LQH43NH821J03L drum core wirewound inductor, 820 µH, 50 mA, 17.4 Ohm DCR, 1812 package, AEC-Q200 qualified. Active production, sourced 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":"AEC-Q200","Features":"-","Q @ Freq":"40 @ 796kHz","Shielding":"Unshielded","Tolerance":"±5%","Inductance":"820 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)":"17.4Ohm Max","Current Rating (Amps)":"50 mA","Height - Seated (Max)":"0.110\\\" (2.80mm)","Operating Temperature":"-40°C ~ 125°C","Supplier Device Package":"1812","Frequency - Self Resonant":"2.2MHz","Current - Saturation (Isat)":"-","Inductance Frequency - Test":"1 kHz"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.6100","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 LQH43NH821J03L?","answer":"Inductance is 820 µH at 1 kHz test frequency, with a 50 mA current rating and 17.4 Ohm maximum DCR."},{"question":"What compliance documentation does Murata provide for the LQH43NH821J03L?","answer":"The part carries AEC-Q200 qualification, confirming it meets automotive-grade passive-component reliability standards. RoHS and REACH compliance documentation is standard from Murata for this series."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/murata-electronics/LQH43NH821J03L","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/murata-electronics/LQH43NH821J03L 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}}