{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SM6T68AY","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"SM6T68AY","canonicalUrl":"https://icboms.com/stmicroelectronics/SM6T68AY","factsUrl":"https://icboms.com/api/mcp/products/SM6T68AY","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics SM6T68AY, Automotive AEC-Q101 TRANSIL™ TVS diode, unidirectional, 600W peak pulse power, 58.1V standoff, 64.6V breakdown, 121V clamping, DO-214AA (SMB) surface mount package, -55°C to 150°C.","salesMarkdown":"Rated for 600W peak pulse power (10/1000 µs waveform), it can absorb substantial transient energy while clamping to a maximum of 121V at 33A (8/20 µs). The 58.1V standoff voltage means it will not conduct at normal operating levels on a 48V nominal rail, and the 64.6V minimum breakdown ensures the avalanche region is entered only during an overvoltage event. For an 8/20 µs waveform, the peak current capability is 33A. This translates to a clamping voltage of 121V at that current, which is the maximum voltage the protected circuitry will see during the surge. For a 48V automotive bus, this provides a comfortable margin above the normal operating range while keeping the clamp below typical semiconductor breakdown thresholds. The 64.6V minimum breakdown voltage ensures the device starts clamping before the voltage reaches a destructive level. This window — from 58.1V to 64.6V — defines the protection threshold and must be matched to the nominal rail voltage plus any steady-state tolerance. This is a standard, non-obsolete part that can be sourced through authorized distribution channels.","metaTitle":"STMicroelectronics SM6T68AY TVS Diode, 600W, AEC-Q101","metaDescription":"STMicroelectronics SM6T68AY automotive TVS diode, 600W peak pulse power, AEC-Q101 qualified, unidirectional, DO-214AA (SMB) package.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"STMicroelectronics","Type":"Zener","Series":"Automotive, AEC-Q101, SM6TY, TRANSIL™","Package":"Tape & Reel (TR); Cut Tape (CT)","Applications":"Automotive","Mounting Type":"Surface Mount","Package / Case":"DO-214AA, SMB","Product Status":"Active","lifecycle_stage":"eol_hot","Power - Peak Pulse":"600W","Base Product Number":"SM6T68","Operating Temperature":"-55°C~150°C(TJ)","Power Line Protection":"No","Capacitance @ Frequency":"-","Supplier Device Package":"SMB (DO-214AA)","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"64.6V","Voltage - Clamping (Max) @ Ipp":"121V","Voltage - Reverse Standoff (Typ)":"58.1V","Current - Peak Pulse (10/1000µs)":"33A (8/20µs)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.0900","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/3a95ac6513bab2f04fd61565540cbe6f.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/SM6T68AY/alternatives.json"},"ai":{"faq":[{"question":"Is SM6T68AY AEC-Q101 qualified?","answer":"Yes, the SM6T68AY is part of the Automotive, AEC-Q101 series, meaning it has passed the automotive-grade qualification tests for reliability under harsh conditions."},{"question":"What is the peak pulse power of SM6T68AY?","answer":"The SM6T68AY is rated for 600W peak pulse power (10/1000 µs waveform), with a peak current of 33A (8/20 µs) and a maximum clamping voltage of 121V."},{"question":"Is SM6T68AY obsolete or end of life?","answer":"It is a current, non-obsolete part."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/SM6T68AY","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/SM6T68AY when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}