{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"0603SFS350F/32-2","brand":"Littelfuse Inc.","brandSlug":"littelfuse-inc","productSlug":"0603SFS350F-32-2","canonicalUrl":"https://icboms.com/littelfuse-inc/0603SFS350F-32-2","factsUrl":"https://icboms.com/api/mcp/products/0603SFS350F%2F32-2","rawCanonicalId":null},"summary":{"shortDescription":"Littelfuse SFS series board-mount slow-blow fuse, 0603 (1608 metric) surface-mount package, 3.5 A, 32 V DC, 50 A breaking capacity, UL approved.","salesMarkdown":"## What 3.5 A at 32 V DC means for your protection scheme The 0603SFS350F/32-2 is a Littelfuse SFS series slow-blow surface-mount fuse rated 3.5 A continuous at 32 V DC. The slow-blow characteristic means it tolerates brief inrush currents — motor start-up, capacitor charging, hot-swap events — without opening, while still clearing sustained overloads. The 50 A interrupting rating at 32 V DC confirms it can safely break a fault current up to that level without arc re-strike or casing rupture. The 0603 footprint (1.60 mm x 0.80 mm x 0.80 mm) fits high-density PCB layouts where board space is at a premium. Cold resistance of 0.021 Ohms keeps the voltage drop under 75 mV at rated current, minimizing power loss in the protection path. ## Obsolete — sourcing reality for the BOM line Each lot is verified for date-code consistency, marking integrity, and packaging authenticity before shipment — the laser etch on the body and reel labels are checked against known Littelfuse plant formatting. UL approval provides regulatory acceptance for equipment sold into North American markets. The melting I²t of 1.2 is the coordination parameter for fuse-to-circuit sizing — downstream components must withstand the energy let-through before the fuse clears.","metaTitle":"0603SFS350F/32-2 Littelfuse SFS 3.5A 32V Slow-Blow Fuse","metaDescription":"0603SFS350F/32-2 Littelfuse SFS series 3.5A 32V DC slow-blow surface-mount fuse, 50A breaking capacity, UL approved.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"Littelfuse Inc.","Color":"-","Series":"SFS","Package":"Tape & Reel (TR) Cut Tape (CT)","Fuse Type":"Board Mount (Cartridge Style Excluded)","Melting I²t":"1.2","Mounting Type":"Surface Mount","Response Time":"Slow 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 0.031\\\" H (1.60mm x 0.80mm x 0.80mm)","DC Cold Resistance":"0.021 Ohms","Voltage Rating - DC":"32 V","Current Rating (Amps)":"3.5 A","Operating Temperature":"-55°C ~ 125°C","Breaking Capacity @ Rated Voltage":"50A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.8300","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/8939cf38a5e3035b0d6c6bedcc1d525b.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the breaking capacity of the 0603SFS350F/32-2?","answer":"50 A at the rated 32 V DC. This is the maximum fault current the fuse can safely interrupt without arcing or casing failure."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/littelfuse-inc/0603SFS350F-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/0603SFS350F-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}}