{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SM15T15A","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"SM15T15A","canonicalUrl":"https://icboms.com/stmicroelectronics/SM15T15A","factsUrl":"https://icboms.com/api/mcp/products/SM15T15A","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics SM15T15A, TRANSIL™, TVS - Zener, Unidirectional, 1 Channel, DO-214AB SMC, 1500W (1.5kW) peak pulse power, 12.8V reverse standoff, 14.3V breakdown min, 27.2V clamping.","salesMarkdown":"## Transient protection for a 12.8 V rail The STMicroelectronics SM15T15A is a unidirectional TRANSIL™ TVS diode designed to clamp voltage transients on a nominal 12.8 V DC rail. It provides a single channel of protection with a peak pulse power rating of 1500W (1.5kW) under the 10/1000 µs waveform, making it suitable for general-purpose surge suppression in industrial, telecom, and automotive auxiliary circuits. ## Clamping voltage and breakdown threshold The reverse standoff voltage is 12.8 V, meaning the diode presents high impedance below this level and does not load the protected rail. Breakdown occurs at a minimum of 14.3 V, which is the threshold where the device begins to conduct. Under a peak pulse current of 368 A (8/20 µs waveform), the clamping voltage is held to a maximum of 27.2 V. This clamping ceiling determines the voltage stress the downstream circuitry must survive during a transient event. ## Package and mounting The SM15T15A uses the SMC package, a common footprint for medium-power TVS diodes. It is surface-mount only, with the cathode band marking the unidirectional orientation. ## Lifecycle and sourcing For BOM planning, the active status removes near-term obsolescence risk, though lead times and minimum order quantities still apply.","metaTitle":"STMicroelectronics SM15T15A TVS Diode, 1500W, DO-214AB","metaDescription":"STMicroelectronics SM15T15A TRANSIL™ TVS diode, 1500W peak pulse power, 12.8V standoff, 14.3V breakdown, unidirectional, 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":"SM15T, TRANSIL™","Package":"Tape & Reel (TR); Cut Tape (CT)","Applications":"General Purpose","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":"SM15T15","Operating Temperature":"-55°C~150°C(TJ)","Power Line Protection":"No","Capacitance @ Frequency":"-","Supplier Device Package":"SMC","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"14.3V","Voltage - Clamping (Max) @ Ipp":"27.2V","Voltage - Reverse Standoff (Typ)":"12.8V","Current - Peak Pulse (10/1000µs)":"368A (8/20µs)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.9200","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/539ce92ad6505c8a9d704773ec1ef151.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is SM15T15A unidirectional or bidirectional?","answer":"The SM15T15A is a unidirectional TVS diode with one channel, designed for DC rail protection where polarity is fixed."},{"question":"What package does SM15T15A come in?","answer":"The SM15T15A is supplied in the DO-214AB (SMC) surface-mount package, a standard footprint for medium-power TVS diodes."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/SM15T15A","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/SM15T15A when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-16T15:46:04.915Z","lastPublished":"2026-07-16T15:46:04.915Z","indexable":true}}