{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LQH43NN100J03L","brand":"Murata Electronics","brandSlug":"murata-electronics","productSlug":"LQH43NN100J03L","canonicalUrl":"https://icboms.com/murata-electronics/LQH43NN100J03L","factsUrl":"https://icboms.com/api/mcp/products/LQH43NN100J03L","rawCanonicalId":null},"summary":{"shortDescription":"Murata Electronics LQH43 series drum core wirewound inductor, LQH43NN100J03L, 10 µH ±5%, 400 mA, 560 mOhm DCR, 1812 (4532 Metric) SMD, unshielded.","salesMarkdown":"## 10 µH unshielded — what the ratings mean for the BOM The LQH43NN100J03L: This is a 10 µH drum-core wirewound inductor with a ±5% tolerance, tested at 1 MHz. The 400 mA current rating is the DC current at which the inductance typically drops by 10% due to core saturation — for a 350 mA rail, you have margin; at 400 mA continuous, expect the inductance to sag below 9 µH. The 560 mOhm maximum DC resistance sets the copper loss: at 400 mA, I²R dissipation is 89.6 mW. Self-resonant frequency is 23 MHz. Above that frequency, the inductor behaves capacitively — for a switching regulator switching at 2 MHz, the SRF is well clear, but a 10 MHz noise filter on this part would see the impedance roll off. It matters for tuned circuits (resonant tank, impedance matching) more than for power filtering, where DCR dominates the loss. ## Unshielded — plan the PCB layout accordingly The unshielded construction means the magnetic field radiates from the drum core. Adjacent traces carrying sensitive analog signals or high-impedance nodes should be kept at least one package width (4.5 mm) away to avoid coupling. A shielded inductor in the same 1812 footprint is a drop-in swap if radiated noise becomes a problem during EMC testing. Package is 1812 (4532 metric), 4.50 mm x 3.20 mm, seated height 2.80 mm max.","metaTitle":"Murata LQH43NN100J03L Inductor, 10 µH, 400 mA, 1812","metaDescription":"Active-production Murata LQH43NN100J03L drum core wirewound inductor, 10 µH ±5%, 400 mA, 560 mOhm DCR, 1812 SMD. Available 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":"36 @ 1MHz","Shielding":"Unshielded","Tolerance":"±5%","Inductance":"10 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":"LQH43NN","DC Resistance (DCR)":"560mOhm Max","Current Rating (Amps)":"400 mA","Height - Seated (Max)":"0.110\\\" (2.80mm)","Operating Temperature":"-40°C~105°C","Supplier Device Package":"1812 (4532 Metric)","Frequency - Self Resonant":"23MHz","Current - Saturation (Isat)":"-","Inductance Frequency - Test":"1 MHz"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.6000","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/d0d6b1d39c76e30b3c05600906460c39.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is LQH43NN100J03L RoHS compliant?","answer":"Murata Electronics marks this part as RoHS compliant per the standard JIS C 0950 declaration. No REACH or UL certification is listed in the product record, but the ferrite core and wirewound construction are typical for lead-free reflow profiles up to 260°C peak."},{"question":"What is the closest alternative to LQH43NN100J03L in the same family?","answer":"The LQH43 series includes several 10 µH variants differentiated by current rating and DCR. The LQH43NN100J03L is the ±5% tolerance, 400 mA version. A shielded alternative in the same 1812 footprint would be the LQH43CN series if radiated EMI becomes a concern, but that requires verifying the current rating and DCR match the circuit requirements."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/murata-electronics/LQH43NN100J03L","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/murata-electronics/LQH43NN100J03L 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}}