{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"0451015.MRL","brand":"Littelfuse Inc.","brandSlug":"littelfuse-inc","productSlug":"0451015.MRL","canonicalUrl":"https://icboms.com/littelfuse-inc/0451015.MRL","factsUrl":"https://icboms.com/api/mcp/products/0451015.MRL","rawCanonicalId":null},"summary":{"shortDescription":"Littelfuse NANO²® 451 series, fast-blow surface-mount fuse, 0451015.MRL, 15 A, 65 V AC/DC, 50 A breaking capacity, 2-SMD square end block, tape and reel.","salesMarkdown":"## 15 A fast-blow SMD fuse for 65 V rails The Littelfuse 0451015.MRL is a 15 A fast-blow surface-mount fuse from the NANO² 451 series, rated for 65 V AC and DC circuits with a 50 A interrupting capacity at rated voltage. The 97.82 A²s melting I²t means this fuse handles moderate inrush without nuisance opening — a 15 A steady load with a capacitor bank or motor start that pulls 30 A for a few milliseconds stays within the energy budget. ## Package and board integration Housed in a 2-SMD square end block measuring 6.10 x 2.69 x 2.69 mm, the 0451015.MRL sits on the PCB with solder pads at both ends — no through-hole leads, so it reflows with the rest of the board in a standard convection oven. Supplied on tape and reel (Cut Tape also available), the part is pick-and-place ready for volume assembly. The 0.0037 Ohm DC cold resistance keeps voltage drop below 56 mV at rated current — negligible on a 65 V rail. ## Thermal and compliance envelope CSA and UL approval means the part is accepted in North American and Canadian equipment listings — a standard requirement for safety-certified power supplies and control boards.","metaTitle":"0451015.MRL Littelfuse NANO² 451 SMD Fuse, 15 A, 65 V","metaDescription":"0451015.MRL Littelfuse NANO² 451 fast-blow SMD fuse, 15 A, 65 V AC/DC, 50 A breaking capacity, UL/CSA, -55 to 125°C. Active production, sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"Littelfuse Inc.","Color":"-","Series":"NANO²® 451","Package":"Tape & Reel (TR) Cut Tape (CT)","Fuse Type":"Board Mount (Cartridge Style Excluded)","Melting I²t":"97.82","Mounting Type":"Surface Mount","Response Time":"Fast Blow","Package / Case":"2-SMD, Square End Block","Product Status":"Active","Approval Agency":"CSA, UL","lifecycle_stage":"unknown","Size / Dimension":"0.240\\\" L x 0.106\\\" W x 0.106\\\" H (6.10mm x 2.69mm x 2.69mm)","DC Cold Resistance":"0.0037 Ohms","Voltage Rating - AC":"65 V","Voltage Rating - DC":"65 V","Current Rating (Amps)":"15 A","Operating Temperature":"-55°C ~ 125°C","Breaking Capacity @ Rated Voltage":"50A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.2800","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/2e33e7b2503f3f5110226be89402b64a.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the breaking capacity of 0451015.MRL?","answer":"The fuse can safely interrupt 50 A at its rated 65 V AC or DC. This is sufficient for secondary-side protection in power supplies and control circuits where the upstream fault current is limited by a higher-rated branch breaker."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/littelfuse-inc/0451015.MRL","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/littelfuse-inc/0451015.MRL 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}}