{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SM4T7V6CAY","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"SM4T7V6CAY","canonicalUrl":"https://icboms.com/stmicroelectronics/SM4T7V6CAY","factsUrl":"https://icboms.com/api/mcp/products/SM4T7V6CAY","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics SM4T7V6CAY, Zener TVS Diode, Automotive Grade, AEC-Q101, 400W Peak Pulse, 6.5V Reverse Standoff, 14.5V Clamp, Bidirectional, DO-214AC (SMA) Surface Mount.","salesMarkdown":"## What the SM4T7V6CAY protects and where it goes The STMicroelectronics SM4T7V6CAY is a bidirectional Zener TVS diode in the DO-214AC (SMA) surface-mount package, rated for 400W peak pulse power per the 10/1000 µs waveform. The part clamps transients at 14.5V maximum while the reverse standoff voltage is 6.5V, and the minimum breakdown voltage is 7.2V. This makes it suitable for protecting 5V and 3.3V supply rails, sensor inputs, and CAN/LIN bus lines in automotive ECUs, body controllers, and infotainment modules where space is tight and the SMA footprint fits. The 6.5V reverse standoff voltage is the maximum DC or peak AC voltage the TVS can withstand without conducting appreciably — below that, it's essentially invisible to the circuit. The 7.2V minimum breakdown voltage is where the device starts to avalanche, and the 14.5V maximum clamping voltage is the worst-case voltage seen across the TVS when it's shunting the rated 160A peak pulse current (8/20 µs waveform). For a 5V rail, the 14.5V clamp is well within the typical 30V to 40V absolute-maximum rating of most automotive ICs, giving a solid protection margin. On a 3.3V rail, the margin is thinner — check that the downstream IC's abs-max input rating exceeds 14.5V. ## Automotive qualification and production status For new designs in automotive, industrial, or any high-reliability environment, this part is a clean choice without obsolescence risk. ## Package and mounting The SMA package has a small board footprint — about 4.5 mm by 2.8 mm — so it fits well on dense automotive PCBs where every square millimetre counts.","metaTitle":"STMicroelectronics SM4T7V6CAY Zener TVS, AEC-Q101, 400W","metaDescription":"STMicroelectronics SM4T7V6CAY bidirectional Zener TVS, 6.5V standoff, 14.5V clamp, 400W peak pulse, AEC-Q101 automotive grade.","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-214AC, SMA","Product Status":"Active","lifecycle_stage":"eol_hot","Power - Peak Pulse":"400W","Base Product Number":"SM4T7","Operating Temperature":"-55°C ~ 150°C (TJ)","Power Line Protection":"No","Bidirectional Channels":"1","Capacitance @ Frequency":"-","Supplier Device Package":"SMA (DO-214AC)","Voltage - Breakdown (Min)":"7.2V","Voltage - Clamping (Max) @ Ipp":"14.5V","Voltage - Reverse Standoff (Typ)":"6.5V","Current - Peak Pulse (10/1000µs)":"160A (8/20µs)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.6000","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/45721247f0377ca5ff3983c35eddc2fa.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is the SM4T7V6CAY AEC-Q101 qualified?","answer":"Yes, it is AEC-Q101 qualified, making it suitable for automotive-grade applications."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/SM4T7V6CAY","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/SM4T7V6CAY when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-16T14:26:25.132Z","lastPublished":"2026-07-16T14:26:25.132Z","indexable":true}}