{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SM4T6V7AY","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"SM4T6V7AY","canonicalUrl":"https://icboms.com/stmicroelectronics/SM4T6V7AY","factsUrl":"https://icboms.com/api/mcp/products/SM4T6V7AY","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics SM4T6V7AY, Automotive Grade Zener TVS Diode, 400W Peak Pulse Power, 6.4V Breakdown Min, 5V Reverse Standoff, 1 Unidirectional Channel, DO-214AC SMA Package, AEC-Q101 Qualified, -55°C to 150°C.","salesMarkdown":"## Automotive-grade transient suppressor for 5V rails Its 6.4 V minimum breakdown voltage triggers clamping at 13.4 V maximum under peak pulse current, keeping downstream circuitry within safe limits during load-dump or surge events. Rated for 400 W peak pulse power (10/1000 µs waveform), this part handles the energy from a typical automotive transient without exceeding junction temperature limits across the full -55°C to 150°C operating range. The DO-214AC (SMA) surface-mount package suits automated assembly and board-space-constrained ECU layouts. The 5 V reverse standoff voltage is the continuous DC level the TVS blocks without conducting. Above 6.4 V (the minimum breakdown point), the diode begins to avalanche, and at the peak pulse current of 174 A (8/20 µs waveform) the clamping voltage is held to 13.4 V maximum. That 13.4 V ceiling is what a 5 V regulator or ASIC input sees during the transient — a critical number for the downstream device's absolute-maximum rating. For a 5 V rail in an automotive ECU, the 6.4 V breakdown provides enough margin above the nominal supply to avoid nuisance triggering from normal ripple, while clamping early enough to protect 40 V-rated components.","metaTitle":"SM4T6V7AY Automotive Zener TVS, 400W, DO-214AC SMA","metaDescription":"STMicroelectronics SM4T6V7AY automotive Zener TVS diode. AEC-Q101 qualified, 6.4V breakdown, 400W peak pulse power, DO-214AC SMA. Available to order.","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":"SM4T6","Operating Temperature":"-55°C ~ 150°C (TJ)","Power Line Protection":"No","Capacitance @ Frequency":"-","Supplier Device Package":"SMA (DO-214AC)","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"6.4V","Voltage - Clamping (Max) @ Ipp":"13.4V","Voltage - Reverse Standoff (Typ)":"5V","Current - Peak Pulse (10/1000µs)":"174A (8/20µs)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.6400","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/45721247f0377ca5ff3983c35eddc2fa.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/SM4T6V7AY/alternatives.json"},"ai":{"faq":[{"question":"Is SM4T6V7AY AEC-Q101 qualified?","answer":"Yes, the SM4T6V7AY is AEC-Q101 qualified. That means it has passed automotive stress tests including high-temperature reverse bias, temperature cycling, and surge robustness, with PPAP documentation available from STMicroelectronics."},{"question":"What is the power rating of SM4T6V7AY?","answer":"The peak pulse power rating is 400 W, measured with a 10/1000 µs waveform. The part can handle a peak pulse current of 174 A under the 8/20 µs waveform."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/SM4T6V7AY","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/SM4T6V7AY 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}}