{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SM6T68CAY","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"SM6T68CAY","canonicalUrl":"https://icboms.com/stmicroelectronics/SM6T68CAY","factsUrl":"https://icboms.com/api/mcp/products/SM6T68CAY","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics SM6T68CAY, Automotive AEC-Q101, SM6TY, TRANSIL™ series, Bidirectional Zener TVS, 600W peak pulse power, 64.6V breakdown, 121V clamping, DO-214AA (SMB), Surface Mount.","salesMarkdown":"## 600 W bidirectional Zener — what it clamps and where The STMicroelectronics SM6T68CAY is a bidirectional transient-voltage-suppression (TVS) Zener diode from the SM6TY TRANSIL™ series, rated for 600 W peak pulse power (10/1000 µs waveform) and housed in a surface-mount DO-214AA (SMB) package. It is designed to clamp overvoltage transients on automotive power and signal lines, with a reverse standoff voltage of 58.1 V, a minimum breakdown of 64.6 V, and a maximum clamping voltage of 121 V at the peak pulse current of 33 A (8/20 µs). The 64.6 V minimum breakdown sets the threshold where the device starts conducting; below that voltage the diode is essentially an open circuit, so it won't interfere with a 48 V or 58 V nominal rail.","metaTitle":"STMicroelectronics SM6T68CAY TVS Diode, 600W, AEC-Q101, SMB","metaDescription":"Bidirectional 600W transient voltage suppressor Zener in DO-214AA (SMB). Breakdown from 64.6V, clamping at 121V. AEC-Q101 qualified for automotive.","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","Bidirectional Channels":"1","Capacitance @ Frequency":"-","Supplier Device Package":"SMB (DO-214AA)","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":"$1.1700","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/3a95ac6513bab2f04fd61565540cbe6f.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/SM6T68CAY/alternatives.json"},"ai":{"faq":[{"question":"Is SM6T68CAY AEC-Q101 qualified?","answer":"Yes, the SM6T68CAY is listed in the Automotive, AEC-Q101 series, qualified for automotive applications."},{"question":"Can SM6T68CAY replace SM6T68A?","answer":"The SM6T68CAY is a bidirectional version of the unidirectional SM6T68A. Both share the same 600 W peak pulse power, breakdown and clamping voltages, and DO-214AA package. The CA suffix indicates bidirectional clamping — if your circuit requires protection against both positive and negative transients, the CA variant is the direct fit."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/SM6T68CAY","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/SM6T68CAY 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}}