{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SM30T6.8AY","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"SM30T6.8AY","canonicalUrl":"https://icboms.com/stmicroelectronics/SM30T6.8AY","factsUrl":"https://icboms.com/api/mcp/products/SM30T6.8AY","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics SM30T6.8AY automotive Zener diode, AEC-Q101 qualified, 3000W peak pulse power, 6.45V breakdown, 5V reverse standoff, 327A peak pulse current, SMC package, -55°C to 175°C.","salesMarkdown":"## What is SM30T6.8AY? The SM30T6.8AY is a single-channel automotive-grade Zener diode from STMicroelectronics, designed for transient voltage suppression in harsh environments. It is AEC-Q101 qualified, rated for 3000W peak pulse power (10/1000µs waveform), and offers a breakdown voltage of 6.45V minimum with a clamping voltage of 9.2V at 327A peak pulse current. The 6.45V minimum breakdown voltage sets the threshold where the diode starts conducting in avalanche. For a 5V nominal rail, this provides a guard band: the device stays off during normal operation but clamps fast when a transient exceeds the standoff. The 9.2V clamping voltage at 327A peak pulse current defines the maximum voltage the protected circuitry sees during a surge event — critical for selecting downstream components with sufficient voltage rating. The 3000W peak pulse power rating (10/1000µs) is the energy-handling capability for a single pulse; for repetitive surges, derating per the thermal curve is required. ## Automotive qualification and temperature range AEC-Q101 qualification means the SM30T6.8AY has passed the automotive stress tests for discrete semiconductors — including high-temperature reverse bias, temperature cycling, and surge robustness. This is a part you can specify for engine control units, transmission controllers, and battery-management systems without additional qualification overhead. ## Package and mounting Housed in a surface-mount package, the SM30T6.8AY is a standard footprint for power TVS diodes. The SMC package offers a larger body than the smaller SMA/SMB variants, which helps with thermal dissipation during pulse events. ## Lifecycle and sourcing For dual-sourcing resilience, the base product number SM30T6.8 covers the family; the 'AY' suffix denotes the automotive grade and specific packaging variant.","metaTitle":"SM30T6.8AY Automotive Zener Diode, 3000W, AEC-Q101","metaDescription":"SM30T6.8AY automotive Zener diode, AEC-Q101 qualified, 3000W peak pulse power, 6.45V breakdown, -55°C to 175°C.","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-214AB, SMC","Product Status":"Active","lifecycle_stage":"eol_hot","Power - Peak Pulse":"3000W (3kW)","Base Product Number":"SM30T6.8","Operating Temperature":"-55°C ~ 175°C (TJ)","Power Line Protection":"No","Capacitance @ Frequency":"-","Supplier Device Package":"SMC","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"6.45V","Voltage - Clamping (Max) @ Ipp":"9.2V","Voltage - Reverse Standoff (Typ)":"5V","Current - Peak Pulse (10/1000µs)":"327A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.3500","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/c1da1532b421560a6148be51fb30338a.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is SM30T6.8AY automotive qualified (AEC-Q101)?","answer":"Yes, the SM30T6.8AY is AEC-Q101 qualified, making it suitable for automotive applications."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/SM30T6.8AY","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/SM30T6.8AY when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-16T15:19:48.493Z","lastPublished":"2026-07-16T15:19:48.493Z","indexable":true}}