{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SM30T26CAY","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"SM30T26CAY","canonicalUrl":"https://icboms.com/stmicroelectronics/SM30T26CAY","factsUrl":"https://icboms.com/api/mcp/products/SM30T26CAY","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics SM30T26CAY, Automotive AEC-Q101 TRANSIL™ bidirectional 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":"## 3000W peak pulse power — automotive-grade transient suppression The STMicroelectronics SM30T26CAY is a bidirectional Zener TVS diode from the TRANSIL™ series, qualified to AEC-Q101 for automotive applications. Its 3000W peak pulse power rating (10/1000µs waveform) handles load-dump and ISO 7637 transients common in 12V and 24V vehicle electrical systems. The 22V reverse standoff voltage protects 24V nominal rails, with a minimum breakdown of 24.4V and a maximum clamping voltage of 35.5V at the 84.5A peak pulse current. The single bidirectional channel clamps both positive and negative surges, reducing component count on the board. ## AEC-Q101 and temperature range — qualified for under-hood and harsh environments AEC-Q101 qualification means the SM30T26CAY has passed the automotive stress tests for reliability: high-temperature reverse bias, temperature cycling, and ESD. The SMC surface-mount package is standard for power TVS diodes, with a large copper pad for heat sinking during repetitive surge events. ## Sourcing and lifecycle No official second source is listed, but the unidirectional variant shares the same package and voltage ratings, offering a design option for polarity-specific protection.","metaTitle":"STMicroelectronics SM30T26CAY TVS Diode, 3000W, AEC-Q101","metaDescription":"STMicroelectronics SM30T26CAY bidirectional TVS diode, 3000W peak pulse power, AEC-Q101 qualified, 22V reverse standoff, 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","Bidirectional Channels":"1","Capacitance @ Frequency":"-","Supplier Device Package":"SMC","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":"$1.5000","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/c1da1532b421560a6148be51fb30338a.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is SM30T26CAY AEC-Q101 qualified?","answer":"Yes, the SM30T26CAY is part of the Automotive, AEC-Q101 series, qualified for automotive-grade applications."},{"question":"Does SM30T26CAY come in a unidirectional version?","answer":"The SM30T26CAY is a bidirectional device with one channel. A unidirectional variant, SM30T26A, exists in the same family and package, offering polarity-specific clamping for applications that only need one-direction protection."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/SM30T26CAY","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/SM30T26CAY when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-16T14:50:07.825Z","lastPublished":"2026-07-16T14:50:07.825Z","indexable":true}}