{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SM15T68A","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"SM15T68A","canonicalUrl":"https://icboms.com/stmicroelectronics/SM15T68A","factsUrl":"https://icboms.com/api/mcp/products/SM15T68A","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics SM15T68A, TRANSIL™ series, Zener TVS diode, 1500W peak pulse power, 64.6V breakdown, 121V clamping, DO-214AB SMC, surface mount, -55°C to 150°C.","salesMarkdown":"## 1500 W peak pulse — what it buys the board The STMicroelectronics SM15T68A is a unidirectional Zener TVS diode from the SM15T, TRANSIL™ series, rated for 1500 W peak pulse power (10/1000 µs waveform). That 1.5 kW rating means it can absorb a substantial surge — enough to protect a 48 V or 58 V rail in industrial power supplies, telecom line cards, or automotive load-dump events — without the part itself failing. The minimum breakdown voltage of 64.6 V and maximum clamping of 121 V at 83 A peak pulse current define the protection window: the circuit sees no more than 121 V during the transient, which is the number the downstream MOSFET or DC-DC converter's Vds rating must clear. No power line protection — it is a unidirectional clamp for signal or DC rail transients, not an AC mains protector.","metaTitle":"SM15T68A Zener TVS Diode, 1500W, 64.6V Breakdown, SMC","metaDescription":"STMicroelectronics SM15T68A Zener TVS diode, 1500W peak pulse power, 64.6V min breakdown, 121V clamping, SMC package, -55 to 150°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":"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":"SM15T68","Operating Temperature":"-55°C~150°C(TJ)","Power Line Protection":"No","Capacitance @ Frequency":"-","Supplier Device Package":"SMC","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"64.6V","Voltage - Clamping (Max) @ Ipp":"121V","Voltage - Reverse Standoff (Typ)":"58.1V","Current - Peak Pulse (10/1000µs)":"83A (8/20µs)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.9900","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/539ce92ad6505c8a9d704773ec1ef151.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/SM15T68A/alternatives.json"},"ai":{"faq":[{"question":"Is SM15T68A bidirectional?","answer":"No, the SM15T68A is a unidirectional device with one channel. It protects against positive transients referenced to ground; for bidirectional protection on AC or bipolar rails, a different part from the SM15T family would be needed."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/SM15T68A","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/SM15T68A 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}}