{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"0603SFV450F/32-2","brand":"Littelfuse Inc.","brandSlug":"littelfuse-inc","productSlug":"0603SFV450F-32-2","canonicalUrl":"https://icboms.com/littelfuse-inc/0603SFV450F-32-2","factsUrl":"https://icboms.com/api/mcp/products/0603SFV450F%2F32-2","rawCanonicalId":null},"summary":{"shortDescription":"Littelfuse Inc. SFV series board-mount fast-blow fuse, 0603SFV450F/32-2, 4.5 A, 32 VDC, 35 A breaking capacity, 0603 (1608 Metric) SMD, UL recognized.","salesMarkdown":"## Rated 4.5 A at 32 VDC with 35 A breaking capacity The 0603SFV450F/32-2: This Littelfuse SFV series fuse is rated 4.5 A continuous at 32 VDC, with a DC cold resistance of 0.019 ohms — the voltage drop at rated current is under 90 mV, negligible in a low-voltage rail. Breaking capacity is 35 A at the rated voltage, meaning it safely interrupts fault currents up to that level without rupturing the 0603 ceramic body. Melting I²t of 1.68 A²s defines the energy to open the element — useful for coordinating with downstream components that must survive the let-through before the fuse clears. ## Fast-blow response in a 0603 SMD footprint Fast-blow characteristic means the fuse opens quickly on overcurrent — no intentional time delay, so it protects sensitive silicon before junction temperatures run away. ## Obsolete — sourced through independent channels UL recognition (approval agency UL) is retained on existing stock — the fuse carries the same safety certification as when it was in production.","metaTitle":"Littelfuse 0603SFV450F/32-2 SFV Fuse, 4.5 A, 32 VDC","metaDescription":"Littelfuse 0603SFV450F/32-2 SFV series fast-blow fuse, 4.5 A, 32 VDC, 35 A breaking capacity, 0603 SMD, UL recognized. 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":"SFV","Package":"Tape & Reel (TR) Cut Tape (CT)","Fuse Type":"Board Mount (Cartridge Style Excluded)","Melting I²t":"1.68","Mounting Type":"Surface Mount","Response Time":"Fast Blow","Package / Case":"0603 (1608 Metric)","Product Status":"Obsolete","Approval Agency":"UL","lifecycle_stage":"unknown","Size / Dimension":"0.063\\\" L x 0.031\\\" W x 0.014\\\" H (1.60mm x 0.80mm x 0.35mm)","DC Cold Resistance":"0.019 Ohms","Voltage Rating - DC":"32 V","Current Rating (Amps)":"4.5 A","Operating Temperature":"-55°C ~ 125°C","Breaking Capacity @ Rated Voltage":"35A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.3601","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/04bd98ad2cdad65c16cf9b80561f8e01.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What are the key electrical ratings of 0603SFV450F/32-2?","answer":"Rated 4.5 A at 32 VDC, fast-blow response, 35 A breaking capacity, melting I²t of 1.68 A²s, and DC cold resistance of 0.019 ohms."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/littelfuse-inc/0603SFV450F-32-2","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/littelfuse-inc/0603SFV450F-32-2 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}}