{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"04513.15NR","brand":"Littelfuse Inc.","brandSlug":"littelfuse-inc","productSlug":"04513.15NR","canonicalUrl":"https://icboms.com/littelfuse-inc/04513.15NR","factsUrl":"https://icboms.com/api/mcp/products/04513.15NR","rawCanonicalId":null},"summary":{"shortDescription":"Littelfuse Inc. NANO²® 451 series, Board Mount (Cartridge Style Excluded) fuse, 04513.15NR, 3.15 A, 125 V AC/DC, Fast Blow, 50 A breaking capacity, Surface Mount, 2-SMD Square End Block package, Tape & Reel.","salesMarkdown":"## Obsolete — the sourcing reality for this 3.15 A fast-blow fuse The 04513.15NR: The part is a NANO² 451 series fast-blow fuse rated 3.15 A at 125 V AC/DC, with a 50 A interrupting capacity at those voltages. The 1.92 melting I²t means it tolerates moderate inrush pulses without nuisance opening — relevant for capacitive or motor-start loads on the same rail. ## Board-fit and approvals — what the 2-SMD package carries Surface-mount in a 2-SMD square end block package, 6.10 mm x 2.69 mm x 2.69 mm. The 0.0215 Ohm cold resistance keeps voltage drop low at rated current — about 68 mV at 3.15 A. Approved under CSA, cULus, and PSE — accepted in North American and Japanese regulatory jurisdictions. Supplied in Tape & Reel format, consistent with standard SMT pick-and-place assembly.","metaTitle":"04513.15NR Littelfuse NANO² 451 Fuse, 3.15 A Fast-Blow","metaDescription":"Littelfuse 04513.15NR NANO² 451 fast-blow SMD fuse, 3.15 A, 125 V, 50 A breaking capacity.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"Littelfuse Inc.","Color":"-","Series":"NANO²® 451","Package":"Tape & Reel (TR)","Fuse Type":"Board Mount (Cartridge Style Excluded)","Melting I²t":"1.92","Mounting Type":"Surface Mount","Response Time":"Fast Blow","Package / Case":"2-SMD, Square End Block","Product Status":"Obsolete","Approval Agency":"CSA, cULus, PSE","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":"0.0215 Ohms","Voltage Rating - AC":"125 V","Voltage Rating - DC":"125 V","Current Rating (Amps)":"3.15 A","Operating Temperature":"-55°C~125°C","Breaking Capacity @ Rated Voltage":"50A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/93a301cacf56880fc0553832fd7cd1d0.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/04513.15NR/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of this fuse?","answer":"50 A at the rated 125 V AC or DC. This is the maximum fault current the fuse can safely interrupt without rupturing the package."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/littelfuse-inc/04513.15NR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/littelfuse-inc/04513.15NR when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-20T14:34:45.345Z","lastPublished":"2026-07-20T14:34:45.345Z","indexable":true}}