{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1206SFS550F/24-2","brand":"Littelfuse Inc.","brandSlug":"littelfuse-inc","productSlug":"1206SFS550F-24-2","canonicalUrl":"https://icboms.com/littelfuse-inc/1206SFS550F-24-2","factsUrl":"https://icboms.com/api/mcp/products/1206SFS550F%2F24-2","rawCanonicalId":null},"summary":{"shortDescription":"Littelfuse SFS series, board-mount slow-blow fuse, 1206SFS550F/24-2, 5.5 A, 24 VDC, 50 A breaking capacity, 1206 (3216 Metric), surface mount, Tape & Reel.","salesMarkdown":"## 5.5 A slow-blow with 50 A breaking capacity at 24 VDC The 1206SFS550F/24-2: Rated 5.5 A continuous at 24 VDC, this SFS-series fuse interrupts faults up to 50 A without rupturing — adequate for protecting low-voltage DC rails in telecom, instrumentation, or battery-powered equipment where the available fault current stays under that threshold. The slow-blow response (melting I²t of 6.4) lets it ride through the startup inrush of a capacitive input or motor load without nuisance opening — a deliberate choice for circuits with a high surge-to-steady-state ratio. ## 1206 SMT footprint, -55 to 125°C range Housed in a standard 1206 (3216 metric) chip package, it reflows with the same profile as passives on the same board — no special handling. The 0.014 Ω cold resistance keeps I²R heating low at full rated current.","metaTitle":"Littelfuse 1206SFS550F/24-2 Fuse, 5.5 A 24 VDC Slow-Blow","metaDescription":"Littelfuse 1206SFS550F/24-2 SFS series fuse, 5.5 A, 24 VDC, slow-blow, 50 A breaking capacity, 1206 SMT.","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":"6.4","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":"0.014 Ohms","Voltage Rating - DC":"24 V","Current Rating (Amps)":"5.5 A","Operating Temperature":"-55°C ~ 125°C","Breaking Capacity @ Rated Voltage":"50A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.7500","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/8939cf38a5e3035b0d6c6bedcc1d525b.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the breaking capacity of 1206SFS550F/24-2 at 24 VDC?","answer":"Rated 50 A at 24 VDC. This is the maximum fault current the fuse can safely interrupt at the rated voltage — keep the prospective short-circuit current of the protected circuit below this level."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/littelfuse-inc/1206SFS550F-24-2","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/littelfuse-inc/1206SFS550F-24-2 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}}