{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SM6T47AY","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"SM6T47AY","canonicalUrl":"https://icboms.com/stmicroelectronics/SM6T47AY","factsUrl":"https://icboms.com/api/mcp/products/SM6T47AY","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics SM6T47AY, Automotive Zener TVS Diode, 600W Peak Pulse, 40V Standoff, 84V Clamping, DO-214AA (SMB), AEC-Q101, -55°C to 150°C.","salesMarkdown":"The STMicroelectronics SM6T47AY is a single-direction Zener TVS diode in the DO-214AA (SMB) surface-mount package, rated for 600W peak pulse power (10/1000µs waveform). It is designed to clamp transients on a 40V nominal rail, with a minimum breakdown voltage of 44.4V and a maximum clamping voltage of 84V at the peak pulse current of 48A (8/20µs). The 40V reverse standoff voltage means the part sits transparently on a 40V bus and only starts conducting when the line exceeds that threshold. ## AEC-Q101 — the automotive gate This part carries AEC-Q101 qualification, the automotive stress-test standard for discrete semiconductors. That means it has passed the full suite of production-level reliability tests — temperature cycling, high-temperature reverse bias, and humidity — required for under-hood, chassis, and body-control modules. ## Package and footprint Housed in the DO-214AA (SMB) package, the SM6T47AY is a surface-mount device. The SMB footprint is a common industry standard, so the PCB layout is straightforward and the part is a drop-in for many existing 40V TVS slots. The package supports the 600W peak pulse rating through its internal junction-to-lead thermal path, so the board copper and via stitching under the pad matter for sustained transient handling.","metaTitle":"SM6T47AY Automotive TVS Zener, 600W, DO-214AA (SMB)","metaDescription":"STMicroelectronics SM6T47AY automotive Zener TVS diode, 600W peak pulse power, 40V standoff, 84V clamping. AEC-Q101 qualified.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"STMicroelectronics","Type":"Zener","Grade":"Automotive","Series":"*","Package":"Tape & Reel (TR) Cut Tape (CT)","Applications":"-","Mounting Type":"Surface Mount","Qualification":"AEC-Q101","Package / Case":"DO-214AA, SMB","Product Status":"Active","lifecycle_stage":"eol_hot","Power - Peak Pulse":"600W","Base Product Number":"SM6T47","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)":"44.4V","Voltage - Clamping (Max) @ Ipp":"84V","Voltage - Reverse Standoff (Typ)":"40V","Current - Peak Pulse (10/1000µs)":"48A (8/20µs)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.5800","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/3a95ac6513bab2f04fd61565540cbe6f.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Can SM6T47AY be used as a replacement for SM6T47A?","answer":"The SM6T47AY is the automotive-grade (AEC-Q101) variant of the SM6T47A base part. If the original design used the non-automotive SM6T47A, the SM6T47AY is a direct functional replacement with the same electrical characteristics — 40V standoff, 44.4V breakdown, 84V clamping — but adds the automotive qualification. Verify the package and temperature range match your BOM."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/SM6T47AY","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/SM6T47AY when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-16T15:19:50.828Z","lastPublished":"2026-07-16T15:19:50.828Z","indexable":true}}