{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SM30T47CAY","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"SM30T47CAY","canonicalUrl":"https://icboms.com/stmicroelectronics/SM30T47CAY","factsUrl":"https://icboms.com/api/mcp/products/SM30T47CAY","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics SM30T47CAY, Automotive AEC-Q101 TRANSIL™ bidirectional Zener TVS, 3000W peak pulse power, 40V reverse standoff, 44.4V min breakdown, 64.5V max clamping, 43.5A peak pulse current, DO-214AB SMC package, -55°C to 175°C junction temperature.","salesMarkdown":"## Bidirectional TVS for 24V and 48V vehicle bus protection The STMicroelectronics SM30T47CAY is a bidirectional Zener transient voltage suppressor from the AEC-Q101 qualified TRANSIL™ SM30TY series, designed to clamp voltage transients on automotive power and signal lines. It delivers a peak pulse power of 3000W (10/1000µs waveform) with a reverse standoff voltage of 40V, making it suited for protecting 24V and 48V nominal rails from load-dump and inductive-switching surges. ## Voltage clamping window and surge capability The SM30T47CAY holds a minimum breakdown voltage of 44.4V and a maximum clamping voltage of 64.5V at the rated peak pulse current of 43.5A. That clamping ceiling keeps the protected rail below the typical 65V to 70V absolute maximum of downstream DC-DC converters and linear regulators used in automotive ECUs. ## Package, footprint, and mounting The device comes in a standard SMC surface-mount package. The SMC footprint is shared across many 3000W TVS parts, so the board layout can accommodate alternate sourcing without a respin. No power line protection is integrated — this is a standalone transient clamp, not a filtered or protected port.","metaTitle":"STMicroelectronics SM30T47CAY Automotive TVS, 3000W, SMC","metaDescription":"STMicroelectronics SM30T47CAY bidirectional Zener TVS, AEC-Q101, 3000W peak pulse, 40V standoff, SMC package. Active production.","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":"SM30T47","Operating Temperature":"-55°C~175°C(TJ)","Power Line Protection":"No","Bidirectional Channels":"1","Capacitance @ Frequency":"-","Supplier Device Package":"SMC","Voltage - Breakdown (Min)":"44.4V","Voltage - Clamping (Max) @ Ipp":"64.5V","Voltage - Reverse Standoff (Typ)":"40V","Current - Peak Pulse (10/1000µs)":"43.5A"}},"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":"What is the peak pulse power of SM30T47CAY?","answer":"SM30T47CAY is rated for 3000W peak pulse power per the 10/1000µs waveform."},{"question":"Is SM30T47CAY qualified for automotive use?","answer":"Yes, SM30T47CAY is AEC-Q101 qualified and part of the TRANSIL™ SM30TY series designed for automotive applications."},{"question":"Does SM30T47CAY come in SMC package?","answer":"Yes, SM30T47CAY is supplied in the DO-214AB (SMC) package."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/SM30T47CAY","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/SM30T47CAY when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-16T15:19:50.734Z","lastPublished":"2026-07-16T15:19:50.734Z","indexable":true}}