{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1206SFS250F/32-2","brand":"Littelfuse Inc.","brandSlug":"littelfuse-inc","productSlug":"1206SFS250F-32-2","canonicalUrl":"https://icboms.com/littelfuse-inc/1206SFS250F-32-2","factsUrl":"https://icboms.com/api/mcp/products/1206SFS250F%2F32-2","rawCanonicalId":null},"summary":{"shortDescription":"Littelfuse Inc. SFS series, Board Mount Surface Mount Fuse, 1206 (3216 Metric), 2.5 A, 32 V DC, Slow Blow, 50 A Breaking Capacity @ Rated Voltage.","salesMarkdown":"## 2.5 A slow blow in a 1206 footprint The Littelfuse 1206SFS250F/32-2 is a 2.5 A, 32 V DC surface-mount fuse from the SFS series, packaged in a standard 1206 (3216 metric) chip format. Its slow-blow characteristic means it tolerates brief inrush currents without nuisance opening — the element absorbs energy up to the 0.9 melting I²t rating before the fuse clears. Rated breaking capacity is 50 A at 32 V DC, sufficient for interrupting low-energy DC faults typical in battery-powered or secondary-side circuits. The 0.065 ohm DC cold resistance keeps voltage drop low at rated current — about 160 mV at 2.5 A. ## Obsolete — sourcing through surplus channels Littelfuse has marked the 1206SFS250F/32-2 as obsolete. No official successor part number is recorded. For new designs, a functionally equivalent 2.5 A, 32 V slow-blow 1206 fuse from the same or another manufacturer should be evaluated. The SFS series is the family; no pin-compatible drop-in replacement is documented by Littelfuse. ## Board-level deployment context UL recognized — the approval covers the fuse construction for use in UL 248-14 supplemental fuse applications. The slow-blow response suits circuits with capacitive inrush, motor start, or hot-plug events where a fast-acting fuse would open on the transient.","metaTitle":"1206SFS250F/32-2 Littelfuse SFS Fuse, 2.5A 32V Slow Blow","metaDescription":"Littelfuse 1206SFS250F/32-2 SFS series surface mount fuse, 2.5A, 32VDC, slow blow, 50A breaking capacity. Obsolete — sourced to order. UL recognized.","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":"0.9","Mounting Type":"Surface Mount","Response Time":"Slow Blow","Package / Case":"1206 (3216 Metric)","Product Status":"Obsolete","Approval Agency":"UL","lifecycle_stage":"unknown","Size / Dimension":"0.126\\\" L x 0.063\\\" W x 0.038\\\" H (3.20mm x 1.60mm x 0.97mm)","DC Cold Resistance":"0.065 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":"$0.9000","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/8939cf38a5e3035b0d6c6bedcc1d525b.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the breaking capacity of this fuse?","answer":"50 A at 32 V DC. This is the maximum fault current the fuse can safely interrupt at the rated voltage. For DC circuits, the breaking capacity is a critical safety parameter — a fault exceeding this value may not clear cleanly."},{"question":"What does the slow-blow response time mean for my circuit?","answer":"The slow-blow (time-delay) characteristic allows brief overcurrent pulses — such as capacitor charging current or motor inrush — to pass without opening. The 0.9 I²t melting integral quantifies the energy needed to melt the element; a transient below this threshold leaves the fuse intact."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/littelfuse-inc/1206SFS250F-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/1206SFS250F-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}}