{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SM30T15CAY","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"SM30T15CAY","canonicalUrl":"https://icboms.com/stmicroelectronics/SM30T15CAY","factsUrl":"https://icboms.com/api/mcp/products/SM30T15CAY","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics SM30T15CAY bidirectional Zener TVS diode, 3000W peak pulse power, 13V reverse standoff, 21.5V clamping, AEC-Q101 qualified, DO-214AB SMC package.","salesMarkdown":"## 3 kW of surge protection in a single SMC package It clamps transients at 21.5 V maximum while standing off 13 V DC continuously, and can handle 140 A of peak pulse current. This is a protection diode you'd specify on a 12 V automotive power bus, an industrial sensor line, or any DC rail where bidirectional clamping is needed and the board sees under-hood or engine-bay temperatures. ## Bidirectional clamping for AC or bipolar lines","metaTitle":"SM30T15CAY STMicroelectronics TVS Diode","metaDescription":"STMicroelectronics SM30T15CAY bidirectional TVS diode, 3000W peak pulse power, 13V standoff, AEC-Q101 automotive qualified.","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":"SM30T15","Operating Temperature":"-55°C ~ 175°C (TJ)","Power Line Protection":"No","Bidirectional Channels":"1","Capacitance @ Frequency":"-","Supplier Device Package":"SMC","Voltage - Breakdown (Min)":"14.3V","Voltage - Clamping (Max) @ Ipp":"21.5V","Voltage - Reverse Standoff (Typ)":"13V","Current - Peak Pulse (10/1000µs)":"140A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.4100","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/c1da1532b421560a6148be51fb30338a.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is SM30T15CAY a bidirectional or unidirectional TVS diode?","answer":"It is a single-channel bidirectional Zener TVS diode, clamping both positive and negative transients symmetrically."},{"question":"Is SM30T15CAY AEC-Q101 qualified?","answer":"Yes, the SM30T15CAY is AEC-Q101 qualified, making it suitable for automotive-grade applications including under-hood and engine-bay environments."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/SM30T15CAY","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/SM30T15CAY 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}}