{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"0451.200NR","brand":"Littelfuse Inc.","brandSlug":"littelfuse-inc","productSlug":"0451.200NR","canonicalUrl":"https://icboms.com/littelfuse-inc/0451.200NR","factsUrl":"https://icboms.com/api/mcp/products/0451.200NR","rawCanonicalId":null},"summary":{"shortDescription":"Littelfuse NANO²® 451 series, 0451.200NR, board mount SMD fuse, 200 mA, 125 V AC/DC, fast blow, 50 A breaking capacity, 2-SMD square end block package, tape and reel.","salesMarkdown":"## 200 mA fast-blow SMD fuse — key parametrics The 0451.200NR is a 200 mA fast-blow SMD fuse from Littelfuse's NANO²® 451 series, rated for 125 V AC and 125 V DC with a breaking capacity of 50 A at rated voltage. The melting I²t of 0.0089 A²s defines the energy let-through before clearing — relevant for coordinating with downstream semiconductor protection. DC cold resistance is 0.8372 Ohms, which sets the voltage drop at rated current at roughly 167 mV.","metaTitle":"0451.200NR Littelfuse NANO² 451 200mA Fast-Blow SMD Fuse","metaDescription":"0451.200NR Littelfuse NANO² 451 SMD fuse, 200mA, 125V AC/DC, 50A breaking capacity. Obsolete — sourced per RFQ through independent channels.","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":"0.0089","Mounting Type":"Surface Mount","Response Time":"Fast Blow","Package / Case":"2-SMD, Square End Block","Product Status":"Obsolete","Approval Agency":"CSA, cULus","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":"0.8372 Ohms","Voltage Rating - AC":"125 V","Voltage Rating - DC":"125 V","Current Rating (Amps)":"200 mA","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/0451.200NR/alternatives.json"},"ai":{"faq":[{"question":"What approvals does the 0451.200NR carry?","answer":"The fuse is CSA and cULus approved, indicating compliance with North American safety standards for branch-circuit and supplementary protection."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/littelfuse-inc/0451.200NR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/littelfuse-inc/0451.200NR 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}}