{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"0451008.NRL","brand":"Littelfuse Inc.","brandSlug":"littelfuse-inc","productSlug":"0451008.NRL","canonicalUrl":"https://icboms.com/littelfuse-inc/0451008.NRL","factsUrl":"https://icboms.com/api/mcp/products/0451008.NRL","rawCanonicalId":null},"summary":{"shortDescription":"Littelfuse Inc., NANO²® 451 series, board mount (cartridge style excluded) fuse, 0451008.NRL, 8 A, 125 V AC/DC, fast blow, surface mount, 2-SMD square end block package, tape and reel.","salesMarkdown":"## 8 A fast-blow fuse for DC and AC rails The Littelfuse 0451008.NRL is an 8 A fast-blow surface-mount fuse from the NANO² 451 series, rated for 125 V AC and 125 V DC with a breaking capacity of 50 A at rated voltage. The fast-blow response time clears overcurrents quickly, protecting downstream components like DC-DC converters or power input stages from short-circuit energy. ## Melting I²t and cold resistance for inrush tolerance With a melting I²t of 20.23, this fuse tolerates moderate inrush pulses without nuisance opening — suitable for capacitive input loads where the startup surge exceeds the steady-state 8 A rating. DC cold resistance is 0.0077 ohms, keeping voltage drop and I²R heating low in the normal operating path. ## Surface-mount package and temperature range Housed in a 2-SMD square end block package measuring 6.10 mm x 2.69 mm x 2.69 mm, it mounts directly to the PCB — no through-hole or cartridge adaptor needed. ## Approvals and compliance Approved by CSA, PSE, and UL — the UL listing confirms the fuse's rating and breaking capacity are certified for North American panel and equipment use.","metaTitle":"Littelfuse 0451008.NRL NANO² 451 Fuse, 8 A, 125 V, Fast Blow","metaDescription":"Littelfuse 0451008.NRL NANO² 451 surface-mount fuse, 8 A, 125 V AC/DC, fast blow, 50 A breaking capacity. 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)","Fuse Type":"Board Mount (Cartridge Style Excluded)","Melting I²t":"20.23","Mounting Type":"Surface Mount","Response Time":"Fast Blow","Package / Case":"2-SMD, Square End Block","Product Status":"Active","Approval Agency":"CSA, PSE, 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":"0.0077 Ohms","Voltage Rating - AC":"125 V","Voltage Rating - DC":"125 V","Current Rating (Amps)":"8 A","Operating Temperature":"-55°C ~ 125°C","Breaking Capacity @ Rated Voltage":"50A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.5926","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/2e33e7b2503f3f5110226be89402b64a.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the melting I²t of 0451008.NRL and why does it matter?","answer":"Melting I²t is 20.23. This value indicates the fuse's energy tolerance during inrush events — higher I²t means it withstands larger or longer surges before opening, which is critical when protecting capacitive or inductive loads."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/littelfuse-inc/0451008.NRL","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/littelfuse-inc/0451008.NRL 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}}