{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SM30T26AY","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"SM30T26AY","canonicalUrl":"https://icboms.com/stmicroelectronics/SM30T26AY","factsUrl":"https://icboms.com/api/mcp/products/SM30T26AY","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics SM30T26AY, Automotive AEC-Q101 TRANSIL™ TVS diode, 3000W peak pulse power, 22V reverse standoff, 35.5V clamping, 84.5A peak pulse current, DO-214AB SMC package, -55°C to 175°C.","salesMarkdown":"The STMicroelectronics SM30T26AY is a unidirectional TRANSIL™ TVS diode from the automotive SM30TY series, qualified to AEC-Q101. It clamps transients on a 22V nominal rail, with a minimum breakdown of 24.4V and a maximum clamping voltage of 35.5V when the peak pulse current hits 84.5A under the 10/1000µs waveform. The 3000W peak pulse power rating tells you the device can absorb a single 3kW surge without failing — that is the number that decides whether the diode survives a load-dump or alternator-field decay event on a 12V or 24V automotive bus. ## Package and footprint — DO-214AB (SMC) The SM30T26AY is supplied in a DO-214AB (SMC) surface-mount package. This is a standard footprint for automotive TVS diodes in the 3kW class, so the board layout can often reuse an existing SMC pad pattern. The package is rated for surface-mount assembly only; no through-hole variant exists in this series. ## Automotive qualification and lifecycle The series is explicitly labelled for automotive applications. The product status is listed as Active, so there is no current obsolescence or last-time-buy notice.","metaTitle":"SM30T26AY TVS Diode, 3000W, AEC-Q101, DO-214AB","metaDescription":"STMicroelectronics SM30T26AY automotive TVS diode, 3000W peak pulse power, 22V reverse standoff, AEC-Q101 qualified, DO-214AB SMC package.","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, SM30TY, TRANSIL™","Package":"Tape & Reel (TR); Cut Tape (CT)","Applications":"Automotive","Mounting Type":"Surface Mount","Package / Case":"DO-214AB, SMC","Product Status":"Active","lifecycle_stage":"eol_hot","Power - Peak Pulse":"3000W (3kW)","Base Product Number":"SM30T26","Operating Temperature":"-55°C~175°C(TJ)","Power Line Protection":"No","Capacitance @ Frequency":"-","Supplier Device Package":"SMC","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"24.4V","Voltage - Clamping (Max) @ Ipp":"35.5V","Voltage - Reverse Standoff (Typ)":"22V","Current - Peak Pulse (10/1000µs)":"84.5A"}},"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 SM30T26AY suitable for automotive applications?","answer":"Yes, the SM30T26AY is part of the automotive SM30TY series, is AEC-Q101 qualified, and is explicitly listed for automotive applications. Its 175°C maximum junction temperature and 22V reverse standoff make it appropriate for 12V and 24V vehicle electrical systems."},{"question":"What is the difference between SM30T26AY and SM30T26A?","answer":"The SM30T26AY is the AEC-Q101 automotive-qualified version of the base SM30T26A. The electrical specifications — 3000W peak pulse power, 22V standoff, 35.5V clamping — are identical. The 'Y' suffix denotes the automotive grade, which includes additional reliability testing and traceability for production in vehicle systems."},{"question":"Is SM30T26AY unidirectional?","answer":"Yes, the SM30T26AY is a unidirectional TVS diode, meaning it clamps transients in one polarity. It has a single unidirectional channel."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/SM30T26AY","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/SM30T26AY when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-16T15:42:57.500Z","lastPublished":"2026-07-16T15:42:57.500Z","indexable":true}}