{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SM15T27CAY","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"SM15T27CAY","canonicalUrl":"https://icboms.com/stmicroelectronics/SM15T27CAY","factsUrl":"https://icboms.com/api/mcp/products/SM15T27CAY","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics SM15T27CAY, Automotive AEC-Q101 TRANSIL™ bidirectional Zener TVS diode, 1500W peak pulse power, 23.1V reverse standoff, 48.3V clamping, DO-214AB SMC package, -40°C to 150°C.","salesMarkdown":"The STMicroelectronics SM15T27CAY is a bidirectional Zener TVS diode from the SM15TY TRANSIL™ series, qualified to AEC-Q101 for automotive applications. It is designed to clamp transients on a nominal 24 V DC bus, with a reverse standoff voltage of 23.1 V and a minimum breakdown voltage of 25.7 V. The 1500 W peak pulse power rating (10/1000 µs waveform) means it can absorb substantial surge energy from load dump or inductive kickback events common in automotive power distribution. The clamping voltage is held to 48.3 V maximum at the peak pulse current of 207 A (8/20 µs waveform), which keeps the protected downstream circuitry within a safe voltage ceiling. ## AEC-Q101 qualification and automotive deployment This qualification is mandatory for Tier-1 suppliers placing TVS diodes in ECUs, transmission controllers, or any module that must survive the automotive reliability validation flow. ## Package and footprint — DO-214AB SMC The SM15T27CAY is supplied in the SMC package, a surface-mount footprint rated for the 1500 W pulse dissipation. The SMC body is larger than the smaller SMA/SMB packages, which helps spread the thermal pulse into the PCB copper. The part is bidirectional in a single package, so no polarity orientation is needed on the board — it clamps equally on positive and negative transients. The mounting is surface-mount only, compatible with standard reflow soldering profiles.","metaTitle":"SM15T27CAY TVS Diode, 1500W, 23.1V Standoff, AEC-Q101","metaDescription":"STMicroelectronics SM15T27CAY bidirectional Zener TVS diode, 1500W peak pulse power, 23.1V reverse standoff, 48.3V clamping, AEC-Q101 qualified, DO-214AB SMC","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":"SM15T27","Operating Temperature":"-40°C~150°C(TJ)","Power Line Protection":"No","Bidirectional Channels":"1","Capacitance @ Frequency":"-","Supplier Device Package":"SMC","Voltage - Breakdown (Min)":"25.7V","Voltage - Clamping (Max) @ Ipp":"48.3V","Voltage - Reverse Standoff (Typ)":"23.1V","Current - Peak Pulse (10/1000µs)":"207A (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 SM15T27CAY AEC-Q101 qualified?","answer":"Yes, the SM15T27CAY is AEC-Q101 qualified, as indicated by its Automotive series designation. This qualification covers the stress tests required for automotive-grade discrete semiconductors."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/SM15T27CAY","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/SM15T27CAY when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-16T15:42:18.052Z","lastPublished":"2026-07-16T15:42:18.052Z","indexable":true}}