{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SM15T82AY","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"SM15T82AY","canonicalUrl":"https://icboms.com/stmicroelectronics/SM15T82AY","factsUrl":"https://icboms.com/api/mcp/products/SM15T82AY","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics SM15T82AY, Zener, Automotive, AEC-Q101, SM15TY, TRANSIL™, 1500W peak pulse, 70V standoff, 146V clamping, DO-214AB SMC, -40°C~150°C.","salesMarkdown":"## 1500 W TVS for 48 V / 60 V rails — what it protects It clamps transients on 70 V standoff rails, with 77.8 V minimum breakdown and 146 V maximum clamping voltage. ## AEC-Q101 and the TRANSIL™ series — why it matters for automotive BOMs This part carries AEC-Q101 qualification, the automotive stress-test standard for discrete semiconductors. That means it passed the full suite of reliability tests — high-temperature reverse bias, temperature cycling, and surge endurance — required for Tier-1 automotive modules. The SM15T82AY is part of the SM15TY series, ST's TRANSIL™ TVS line optimized for automotive transient protection. No successor or replacement has been announced; for dual-sourcing, look at other AEC-Q101 1500 W TVS diodes in the same DO-214AB footprint with a 70 V standoff rating. ## Peak pulse current and clamping — sizing the protection The SM15T82AY is rated for 69 A peak pulse current under the 8/20 µs waveform, which is the standard for ESD and lightning-surge testing per IEC 61000-4-5. The 146 V clamping voltage at that current is the ceiling the protected bus sees — a downstream 100 V-rated MOSFET or 80 V-rated capacitor would be at risk if the clamping voltage exceeds its breakdown. For a 48 V nominal rail (e.g., automotive load-dump or industrial 48 V PoE), the 70 V standoff provides enough margin to avoid false triggering from normal ripple, while the 1500 W rating handles the energy from a typical load-dump pulse. Note that power line protection is not specified (the part is unidirectional), so it is intended for DC rails with a known polarity, not AC mains.","metaTitle":"STMicroelectronics SM15T82AY TVS Diode, 1500W, AEC-Q101","metaDescription":"STMicroelectronics SM15T82AY Zener TVS diode, 1500W peak pulse power, 70V standoff, 146V clamping, AEC-Q101 qualified, DO-214AB SMC package. 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, SM15TY, 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":"1500W (1.5kW)","Base Product Number":"SM15T82","Operating Temperature":"-40°C~150°C(TJ)","Power Line Protection":"No","Capacitance @ Frequency":"-","Supplier Device Package":"SMC","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"77.8V","Voltage - Clamping (Max) @ Ipp":"146V","Voltage - Reverse Standoff (Typ)":"70V","Current - Peak Pulse (10/1000µs)":"69A (8/20µs)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.0600","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/d3caa9efa0f4fede168088411f4832fd.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is SM15T82AY AEC-Q101 qualified?","answer":"Yes, the SM15T82AY is AEC-Q101 qualified, as indicated by the Automotive, AEC-Q101 series designation. This qualifies it for use in automotive electronics where reliability stress testing per AEC-Q101 is required."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/SM15T82AY","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/SM15T82AY 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}}