{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"04671.25NR","brand":"Littelfuse Inc.","brandSlug":"littelfuse-inc","productSlug":"04671.25NR","canonicalUrl":"https://icboms.com/littelfuse-inc/04671.25NR","factsUrl":"https://icboms.com/api/mcp/products/04671.25NR","rawCanonicalId":null},"summary":{"shortDescription":"Littelfuse 467 series, Board Mount (Cartridge Style Excluded) fast-blow fuse, 1.25 A, 32 VAC / 65 VDC, 0603 (1608 Metric) package, Tape & Reel (TR); Cut Tape (CT).","salesMarkdown":"## 1.25 A fast-blow in a 0603 footprint The Littelfuse 04671.25NR is a 1.25 A fast-blow surface-mount fuse from the 467 series, packed in a 0603 (1608 metric) case. Rated for 32 VAC and 65 VDC, it handles the common low-voltage rails you see on control boards and telecom line cards. The breaking capacity is 35 A on the AC side and 13 A on the DC side — enough to clear a hard short on a typical 24 V or 48 V bus without the fuse casing rupturing. ## What the ratings mean on the bench The 0.0518 melting I²t figure tells you how much energy the fuse absorbs before it opens. For a 1.25 A fast-blow, that is a low threshold — it pops quickly on a moderate overcurrent, which is exactly what you want when protecting a sensitive load that cannot ride through a sustained fault. DC cold resistance is 0.051 Ohms. At 1.25 A, that is about 80 mV of voltage drop and 80 mW of self-heating — negligible in most circuits, but worth checking if your rail margin is tight and the fuse sits in a high-ambient spot. The operating temperature range is -55°C to 90°C. That covers the full industrial band and most automotive cabin environments, but if your fuse is near a hot MOSFET or regulator, the 90°C ceiling means you need to keep the local ambient below that or derate the current. ## Active production, sourced to order Approved by CSA and UL — the two agencies most commonly required for safety-listed overcurrent protection in industrial and commercial equipment. If your compliance checklist demands UL-recognized or CSA-certified components, this fuse checks both boxes.","metaTitle":"Littelfuse 04671.25NR 1.25A Fast Blow Fuse, 0603","metaDescription":"Littelfuse 467 series 04671.25NR 1.25A fast-blow surface-mount fuse in 0603 package. Rated 32VAC/65VDC, 35A AC/13A DC breaking capacity.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"Littelfuse Inc.","Color":"-","Series":"467","Package":"Tape & Reel (TR); Cut Tape (CT)","Fuse Type":"Board Mount (Cartridge Style Excluded)","Melting I²t":"0.0518","Mounting Type":"Surface Mount","Response Time":"Fast Blow","Package / Case":"0603 (1608 Metric)","Product Status":"Active","Approval Agency":"CSA, UL","lifecycle_stage":"unknown","Size / Dimension":"0.063\\\" L x 0.032\\\" W x 0.012\\\" H (1.60mm x 0.81mm x 0.31mm)","DC Cold Resistance":"0.051 Ohms","Voltage Rating - AC":"32 V","Voltage Rating - DC":"65 V","Current Rating (Amps)":"1.25 A","Operating Temperature":"-55°C~90°C","Breaking Capacity @ Rated Voltage":"35A AC, 13A DC"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.3700","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/649812335218789f332d0f5127374e6a.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the breaking capacity of 04671.25NR?","answer":"The breaking capacity is 35 A AC at the rated 32 VAC and 13 A DC at the rated 65 VDC. This is the maximum fault current the fuse can safely interrupt without rupturing."},{"question":"What approvals does the 04671.25NR carry?","answer":"It is approved by CSA and UL, the two most common safety agencies for overcurrent protection in industrial and commercial equipment."},{"question":"How do I get current pricing and availability for 04671.25NR?","answer":"The 04671.25NR is sourced to order against your BOM quantity through independent distribution."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/littelfuse-inc/04671.25NR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/littelfuse-inc/04671.25NR 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}}