{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1206SFF150F/63-2","brand":"Littelfuse Inc.","brandSlug":"littelfuse-inc","productSlug":"1206SFF150F-63-2","canonicalUrl":"https://icboms.com/littelfuse-inc/1206SFF150F-63-2","factsUrl":"https://icboms.com/api/mcp/products/1206SFF150F%2F63-2","rawCanonicalId":null},"summary":{"shortDescription":"Littelfuse Inc. SFF series, Board Mount (Cartridge Style Excluded) fast-blow fuse, 1206SFF150F/63-2, 1.5 A, 63 VDC, 50 A breaking capacity, 1206 (3216 Metric) package, UL approved.","salesMarkdown":"## What the ratings mean for your circuit The 1206SFF150F/63-2: Rated 1.5 A continuous at 63 VDC with a fast-blow response time, this fuse clears overcurrents quickly — the 0.025 melting I²t figure tells you the energy needed to open the element, which is low enough to protect sensitive semiconductor loads from short-circuit damage. The 50 A breaking capacity at 63 VDC means the fuse can safely interrupt a fault current up to that level without rupturing the 1206 ceramic body — a critical spec for DC bus protection where the available fault current can exceed the fuse's interrupt rating. The DC cold resistance of 0.12 Ohms at 25°C means the voltage drop at rated current is about 180 mV — negligible in a 63 V rail, but worth checking if the load is a low-voltage (<5 V) circuit where the fuse drop eats into the headroom. ## Approvals and compliance UL approved — the fuse carries UL recognition for North American safety standards, which is the primary authority signal for a board-mount fuse used in commercial and industrial equipment.","metaTitle":"Littelfuse 1206SFF150F/63-2 SFF Fuse, 1.5 A, 63 VDC","metaDescription":"Littelfuse 1206SFF150F/63-2 SFF series fast-blow fuse, 1.5 A, 63 VDC, 50 A breaking capacity, UL approved. 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":"SFF","Package":"Tape & Reel (TR) Cut Tape (CT)","Fuse Type":"Board Mount (Cartridge Style Excluded)","Melting I²t":"0.025","Mounting Type":"Surface Mount","Response Time":"Fast 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 0.043\\\" H (3.20mm x 1.60mm x 1.10mm)","DC Cold Resistance":"0.12 Ohms","Voltage Rating - DC":"63 V","Current Rating (Amps)":"1.5 A","Operating Temperature":"-55°C ~ 125°C","Breaking Capacity @ Rated Voltage":"50A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.9100","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/8939cf38a5e3035b0d6c6bedcc1d525b.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the breaking capacity of the 1206SFF150F/63-2?","answer":"50 A at the rated 63 VDC. This is the maximum fault current the fuse can safely interrupt without rupturing the 1206 ceramic body."},{"question":"What compliance documentation does Littelfuse provide for this fuse?","answer":"The fuse carries UL approval."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/littelfuse-inc/1206SFF150F-63-2","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/littelfuse-inc/1206SFF150F-63-2 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}}