{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SM4T35AY","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"SM4T35AY","canonicalUrl":"https://icboms.com/stmicroelectronics/SM4T35AY","factsUrl":"https://icboms.com/api/mcp/products/SM4T35AY","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics SM4T35AY, Automotive AEC-Q101 TRANSIL Zener TVS diode, 400W peak pulse power, 30V reverse standoff, 64.3V clamping, DO-214AC SMA package, -55°C to 150°C.","salesMarkdown":"## 400W peak pulse power in an automotive-grade Zener TVS It delivers 400W peak pulse power (10/1000µs waveform) with a 30V reverse standoff voltage, making it a primary clamp for 24V and 28V nominal rails in vehicle electronics. The 33.3V minimum breakdown voltage and 64.3V maximum clamping at 36A (8/20µs) define a clean protection window for sensitive downstream ICs. ## AEC-Q101 qualification and temperature range ## DO-214AC SMA package — board-level fit Housed in a DO-214AC (SMA) surface-mount package, the SM4T35AY uses a standard footprint shared across the SM4TY series. The SMA body is suited for reflow soldering and automated pick-and-place. No power line protection is provided — this is a unidirectional transient suppressor for signal or low-side power rails, not a mains-side clamp.","metaTitle":"STMicroelectronics SM4T35AY Zener TVS Diode, 400W, AEC-Q101","metaDescription":"STMicroelectronics SM4T35AY automotive Zener TVS diode, 400W peak pulse power, AEC-Q101 qualified, DO-214AC SMA package, -55°C to 150°C.","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, SM4TY, TRANSIL™","Package":"Tape & Reel (TR); Cut Tape (CT)","Applications":"Automotive","Mounting Type":"Surface Mount","Package / Case":"DO-214AC, SMA","Product Status":"Active","lifecycle_stage":"eol_hot","Power - Peak Pulse":"400W","Base Product Number":"SM4T35","Operating Temperature":"-55°C~150°C(TJ)","Power Line Protection":"No","Capacitance @ Frequency":"-","Supplier Device Package":"SMA (DO-214AC)","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"33.3V","Voltage - Clamping (Max) @ Ipp":"64.3V","Voltage - Reverse Standoff (Typ)":"30V","Current - Peak Pulse (10/1000µs)":"36A (8/20µs)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.9400","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/45721247f0377ca5ff3983c35eddc2fa.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the peak pulse power of SM4T35AY?","answer":"The SM4T35AY is rated for 400W peak pulse power per the 10/1000µs waveform, with a peak pulse current of 36A under the 8/20µs condition."},{"question":"Is SM4T35AY suitable for automotive use?","answer":"Yes, the SM4T35AY is AEC-Q101 qualified and listed under the Automotive series, making it suitable for automotive electronic systems including ECUs, sensors, and infotainment modules."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/SM4T35AY","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/SM4T35AY 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}}