{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1206SFP150F/63-2","brand":"Littelfuse Inc.","brandSlug":"littelfuse-inc","productSlug":"1206SFP150F-63-2","canonicalUrl":"https://icboms.com/littelfuse-inc/1206SFP150F-63-2","factsUrl":"https://icboms.com/api/mcp/products/1206SFP150F%2F63-2","rawCanonicalId":null},"summary":{"shortDescription":"Littelfuse Inc., SFP series, Board Mount (Cartridge Style Excluded) fuse, 1206SFP150F/63-2, 1.5 A, 63 V DC, 50 A breaking capacity, 1206 (3216 Metric) package, Tape & Reel.","salesMarkdown":"## 1.5 A at 63 V DC — the protection threshold for low-power DC rails The Littelfuse 1206SFP150F/63-2 is a 1.5 A, 63 V DC rated board-mount fuse from the SFP series, packaged in a 1206 (3216 Metric) surface-mount form factor. It is designed to protect low-voltage DC circuits — think control electronics, sensor supplies, or auxiliary power rails — where a precise overcurrent trip point is needed without the bulk of a cartridge fuse. The 1.5 A current rating sets the continuous load it can carry without opening; the 63 V DC voltage rating defines the maximum circuit voltage it can safely interrupt. For a 24 V or 48 V DC rail, this fuse sits comfortably within the voltage envelope, and the 50 A breaking capacity at rated voltage means it can clear a hard short without rupturing — the fuse itself becomes the weak link, not the PCB trace. ## Melting I²t of 0.33 — coordination with inrush and upstream protection The melting I²t of 0.33 A²s is the thermal energy required to melt the fuse element. This number is what you use to check whether the fuse will hold during a capacitive inrush or motor start surge: if the I²t of the pulse is lower than 0.33, the fuse stays closed. It also helps coordinate with a downstream semiconductor or a upstream circuit breaker — the fuse should open before the protected device fails, but not so fast that nuisance trips plague the design. The DC cold resistance of 0.15 Ohms means at 1.5 A the fuse drops about 225 mV — negligible for most 24 V or 48 V rails, but worth budgeting if the load is a 3.3 V sensor running near its dropout. ## Obsolete — sourcing through independent channels Littelfuse has marked the 1206SFP150F/63-2 as obsolete. No official successor order code is recorded on this line, so the BOM position relies on surplus or broker inventory. The laser etch and date-code consistency should be verified against Littelfuse's marking standards — a mismatch in font or logo placement is a red flag for re-marked stock. The UL approval is a positive chain-of-custody signal: an authentic part carries the UL mark and the manufacturer's logo in the correct orientation. When sourcing through independent channels, request photographs of the top marking and the reel label before committing to a lot quantity. ## 1206 footprint — board integration The tape-and-reel packaging (Cut Tape also available) suits pick-and-place assembly for both prototyping and production volumes.","metaTitle":"Littelfuse 1206SFP150F/63-2 SFP Fuse, 1.5 A 63 V DC","metaDescription":"Littelfuse 1206SFP150F/63-2 SFP series board-mount fuse, 1.5 A, 63 V DC, 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) Cut Tape (CT)","Fuse Type":"Board Mount (Cartridge Style Excluded)","Melting I²t":"0.33","Mounting Type":"Surface Mount","Response Time":"-","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":"0.15 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":"$0.2887","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/8939cf38a5e3035b0d6c6bedcc1d525b.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Where can I buy the 1206SFP150F/63-2?","answer":"The UL marking and date-code traceability should be verified on any offered lot."},{"question":"What is the breaking capacity of the 1206SFP150F/63-2?","answer":"50 A at the rated 63 V DC. This means the fuse can safely interrupt a fault current up to 50 A without rupturing or sustaining an arc, provided the circuit voltage does not exceed 63 V DC."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/littelfuse-inc/1206SFP150F-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/1206SFP150F-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}}