{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5SMC6.8AT3","brand":"onsemi","brandSlug":"onsemi","productSlug":"1.5SMC6.8AT3","canonicalUrl":"https://icboms.com/onsemi/1.5SMC6.8AT3","factsUrl":"https://icboms.com/api/mcp/products/1.5SMC6.8AT3","rawCanonicalId":null},"summary":{"shortDescription":"onsemi 1.5SMC6.8AT3, Zener TVS diode, 1500W peak pulse power, 5.8V reverse standoff, unidirectional, DO-214AB SMC package","salesMarkdown":"## Zener TVS diode for 5.8V rail protection The 1.5SMC6.8AT3 is a unidirectional Zener TVS diode from onsemi, rated for 1500W peak pulse power per the 10/1000µs waveform. It clamps transients on a 5.8V nominal rail to 10.5V maximum, handling a peak pulse current of 143A. This part sits in the 1.5SMC series, a common choice for general-purpose surge protection in telecom, industrial, and consumer power supplies. ## Clamping voltage and breakdown margin The minimum breakdown voltage is 6.45V, which gives a 0.65V margin above the 5.8V standoff — tight enough to avoid nuisance triggering on a regulated 5V rail, but the designer should verify the rail's tolerance against the 10.5V clamp. Operating temperature spans -65°C to 150°C junction, suiting outdoor or under-hood environments where the ambient may exceed 85°C. ## Obsolete — sourcing reality for the 1.5SMC6.8AT3 onsemi lists the 1.5SMC6.8AT3 as Obsolete. For a stalled BOM line, the practical path is a last-time buy from remaining distributor stock or a cross-reference to an active 1.5SMC-series part with the same voltage rating. The DO-214AB SMC package is a standard footprint shared across many 1.5kW TVS diodes from multiple manufacturers, which opens up pin-compatible replacement options.","metaTitle":"1.5SMC6.8AT3 onsemi Zener TVS Diode – 1500W, Obsolete","metaDescription":"onsemi 1.5SMC6.8AT3 Zener TVS diode, 1500W peak pulse power, 5.8V standoff, DO-214AB SMC. Obsolete — find replacement and request quote.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"onsemi","Type":"Zener","Series":"-","Package":"Tape & Reel (TR); Cut Tape (CT)","Applications":"General Purpose","Mounting Type":"Surface Mount","Package / Case":"DO-214AB, SMC","Product Status":"Obsolete","lifecycle_stage":"eol_hot","Power - Peak Pulse":"1500W (1.5kW)","Base Product Number":"1.5SMC","Operating Temperature":"-65°C~150°C(TJ)","Power Line Protection":"No","Capacitance @ Frequency":"-","Supplier Device Package":"SMC","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"6.45V","Voltage - Clamping (Max) @ Ipp":"10.5V","Voltage - Reverse Standoff (Typ)":"5.8V","Current - Peak Pulse (10/1000µs)":"143A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.5800","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/67cccc4ec8e3058e4b6b6ee8407ab63e.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is the 1.5SMC6.8AT3 obsolete?","answer":"Yes, onsemi lists the 1.5SMC6.8AT3 as Obsolete. There is no recorded successor, so a last-time buy or a cross-reference to an active 1.5SMC-series part with the same voltage rating is the typical next step."},{"question":"What is the closest pin-compatible alternative to the 1.5SMC6.8AT3?","answer":"Any active 1.5SMC-series Zener TVS diode from onsemi in the DO-214AB package with the same 5.8V standoff (e.g., 1.5SMC6.8AT3G if active) would be a direct fit. Other manufacturers like Littelfuse or Vishay offer 1.5kW SMC-package TVS diodes with matching voltage ratings — confirm the breakdown and clamping specs against your rail."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/onsemi/1.5SMC6.8AT3","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/onsemi/1.5SMC6.8AT3 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T20:13:31.844Z","lastPublished":"2026-07-17T20:13:31.844Z","indexable":true}}