{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"0603SFP250F/32-2","brand":"Littelfuse Inc.","brandSlug":"littelfuse-inc","productSlug":"0603SFP250F-32-2","canonicalUrl":"https://icboms.com/littelfuse-inc/0603SFP250F-32-2","factsUrl":"https://icboms.com/api/mcp/products/0603SFP250F%2F32-2","rawCanonicalId":null},"summary":{"shortDescription":"Littelfuse Inc. SFP series board mount fuse, 0603 (1608 metric), 2.5 A, 32 VDC, 50 A breaking capacity, UL recognized, tape and reel.","salesMarkdown":"## SFP 0603 — 2.5 A fast-acting chip fuse The Littelfuse 0603SFP250F/32-2 is a 2.5 A, 32 VDC board-mount fuse in the SFP series, housed in the standard 0603 (1608 metric) chip package. It is a surface-mount, fast-acting fuse designed for overcurrent protection on densely populated PCBs where space is at a premium. Rated breaking capacity is 50 A at the rated voltage, meaning it can safely interrupt a fault current up to that level without rupturing or sustaining an arc — a key parameter for secondary-side protection in DC power rails where the available fault current from the bulk capacitor bank can exceed the fuse's interrupt rating. DC cold resistance is 0.042 Ohms typical. Melting I²t is 0.56 A²s. This is the energy needed to open the fuse element. For a designer, it governs the fuse's ability to ride through inrush current without nuisance opening — a capacitor charging into a 2.5 A rail with a 100 µF bulk cap draws a peak inrush that stays below this I²t threshold for typical soft-start times above 100 µs. ## Obsolete — sourcing through independent channels Littelfuse has marked the 0603SFP250F/32-2 as obsolete. The UL recognition still applies to existing stock; parts carry the original manufacturer's markings and are RoHS-compliant per the original production date code. No pin-compatible drop-in replacement from Littelfuse is documented — any functional substitute will require a PCB respin or parametric revalidation. ## 0603 footprint and rework profile Package size is 0.063\" x 0.032\" x 0.032\" (1.60 mm x 0.81 mm x 0.81 mm) — the standard 0603 chip footprint. The nickel-tin plated terminations are compatible with standard SAC305 solder profiles; peak reflow temperature should not exceed 260 °C per JEDEC J-STD-020 for the component body. Operating temperature range is -55 °C to 125 °C, covering the full industrial and automotive under-hood ambient envelope. The fuse element is hermetically sealed in the ceramic body — no moisture sensitivity level (MSL) concern, though standard ESD handling precautions apply during rework.","metaTitle":"0603SFP250F/32-2 Littelfuse SFP Fuse, 2.5A, 32V, 0603","metaDescription":"Littelfuse 0603SFP250F/32-2 SFP series board-mount fuse, 2.5 A, 32 VDC, 50 A breaking capacity, 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":"SFP","Package":"Tape & Reel (TR)","Fuse Type":"Board Mount (Cartridge Style Excluded)","Melting I²t":"0.56","Mounting Type":"Surface Mount","Response Time":"-","Package / Case":"0603 (1608 Metric)","Product Status":"Obsolete","Approval Agency":"UL","lifecycle_stage":"unknown","Size / Dimension":"0.063\\\" L x 0.032\\\" W x 0.032\\\" H (1.60mm x 0.81mm x 0.81mm)","DC Cold Resistance":"0.042 Ohms","Voltage Rating - DC":"32 V","Current Rating (Amps)":"2.5 A","Operating Temperature":"-55°C ~ 125°C","Breaking Capacity @ Rated Voltage":"50A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.3641","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/8939cf38a5e3035b0d6c6bedcc1d525b.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the breaking capacity of the 0603SFP250F/32-2 at 32 VDC?","answer":"The breaking capacity is 50 A at the rated voltage of 32 VDC. This means the fuse can safely interrupt a fault current up to 50 A without rupturing or sustaining an arc, which is critical for secondary-side DC rail protection in power supplies and battery circuits."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/littelfuse-inc/0603SFP250F-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/0603SFP250F-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}}