{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"045101.6NR","brand":"Littelfuse Inc.","brandSlug":"littelfuse-inc","productSlug":"045101.6NR","canonicalUrl":"https://icboms.com/littelfuse-inc/045101.6NR","factsUrl":"https://icboms.com/api/mcp/products/045101.6NR","rawCanonicalId":null},"summary":{"shortDescription":"Littelfuse NANO²® 451 series, board-mount fast-blow fuse, surface-mount, 1.6 A, 125 V AC/DC, 50 A breaking capacity, 2-SMD square end block package, Tape & Reel.","salesMarkdown":"## What the ratings mean for your board The 045101.6NR is a Littelfuse NANO²® 451 series fast-blow fuse rated 1.6 A at 125 V AC or DC. The 50 A breaking capacity at rated voltage means it can safely interrupt a short-circuit fault up to that current without rupturing — adequate for secondary-side protection in a 125 VDC rail where the available fault current stays under that ceiling. The melting I²t of 1.06 A²s tells you how much energy the fuse absorbs before opening — useful when sizing the fuse to ride through inrush current from a capacitive input or a motor start without nuisance blowing. Approved by CSA, cULus, and PSE, so it is accepted in North American and Japanese equipment without additional agency testing. ## Lifecycle reality — obsolete, sourced per RFQ Littelfuse lists the 045101.6NR as obsolete.","metaTitle":"045101.6NR Littelfuse NANO² 451 Fast-Blow Fuse, 1.6 A, 125 V","metaDescription":"045101.6NR Littelfuse NANO²® 451 surface-mount fast-blow fuse, 1.6 A, 125 V AC/DC, 50 A breaking capacity. Obsolete — sourced to order against RFQ.","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":"1.06","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":"0.058 Ohms","Voltage Rating - AC":"125 V","Voltage Rating - DC":"125 V","Current Rating (Amps)":"1.6 A","Operating Temperature":"-55°C ~ 125°C","Breaking Capacity @ Rated Voltage":"50A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/b741f1b0e0a9e21e6a76cce2b8d96e45.pdf","sourceUrl":null},"ai":{"faq":[{"question":"How do I get current pricing and availability for 045101.6NR?","answer":"Submit an RFQ for the 045101.6NR."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/littelfuse-inc/045101.6NR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/littelfuse-inc/045101.6NR 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}}