{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SM30T47AY","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"SM30T47AY","canonicalUrl":"https://icboms.com/stmicroelectronics/SM30T47AY","factsUrl":"https://icboms.com/api/mcp/products/SM30T47AY","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics SM30T47AY Zener diode, Automotive AEC-Q101 SM30TY TRANSIL™ series, 3000W peak pulse power, 40V reverse standoff, 44.4V breakdown min, 64.5V clamping, 43.5A peak pulse, DO-214AB SMC, -55°C to 175°C.","salesMarkdown":"## AEC-Q101 grade — no substitute for the audit trail The SM30T47AY is a Zener diode from STMicroelectronics' SM30TY TRANSIL™ series, explicitly qualified to AEC-Q101 and marked for automotive applications. That qualification means the part comes with a PPAP-ready data package — the OEM auditor will ask for it, and this part has it. The 3000W peak pulse power rating (10/1000µs waveform) handles the 40V reverse standoff rail, clamping transients at 64.5V maximum while conducting 43.5A peak pulse current. Junction temperature spans -55°C to 175°C, comfortably covering under-hood and engine-bay thermal profiles. ## Breakdown and clamping — the numbers that decide fit Minimum breakdown voltage is 44.4V, with a typical 40V reverse standoff voltage. That 4.4V margin between standoff and breakdown is the window the designer works with — the rail must stay under 40V during normal operation, and the part starts conducting above 44.4V. Clamping is specified at 64.5V maximum at the rated 43.5A peak pulse current. For a 3000W device in a DO-214AB SMC package, this clamping voltage is consistent with a 40V-class automotive TVS used for load-dump and ISO 7637-2 pulse 5a protection.","metaTitle":"SM30T47AY Zener Diode, AEC-Q101, 3000W, DO-214AB","metaDescription":"SM30T47AY STMicroelectronics Zener diode, AEC-Q101 qualified, 3000W peak pulse power, 40V standoff, DO-214AB SMC, -55°C to 175°C. Available to order.","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","Capacitance @ Frequency":"-","Supplier Device Package":"SMC","Unidirectional Channels":"1","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":"$1.3500","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/c1da1532b421560a6148be51fb30338a.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is SM30T47AY AEC-Q101 qualified?","answer":"Yes, the SM30T47AY is explicitly listed as AEC-Q101 qualified in its series designation (Automotive, AEC-Q101, SM30TY, TRANSIL™). This qualification covers the production-part approval process (PPAP) documentation required for automotive OEM submissions."},{"question":"Can SM30T47AY be used as a replacement for SM30T47?","answer":"The base product number for SM30T47AY is SM30T47, indicating it shares the same Zener die and electrical design. The 'AY' suffix denotes the AEC-Q101 automotive qualification variant. For a non-automotive application, the base SM30T47 may be electrically equivalent, but the AEC-Q101 grade and the associated PPAP documentation are specific to the 'AY' variant."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/SM30T47AY","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/SM30T47AY when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-16T14:50:12.725Z","lastPublished":"2026-07-16T14:50:12.725Z","indexable":true}}