{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SM15T68CA","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"SM15T68CA","canonicalUrl":"https://icboms.com/stmicroelectronics/SM15T68CA","factsUrl":"https://icboms.com/api/mcp/products/SM15T68CA","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics SM15T68CA, TRANSIL™ series, Bidirectional TVS Zener Diode, 1500W Peak Pulse Power, 58.1V Reverse Standoff, 121V Clamp, DO-214AB SMC Package.","salesMarkdown":"## 1500W bidirectional TVS in a DO-214AB package It delivers 1500W peak pulse power (1.5kW) per the 10/1000µs waveform, with a reverse standoff voltage of 58.1V and a maximum clamping voltage of 121V at the peak pulse current of 83A (8/20µs waveform). The 58.1V reverse standoff voltage means the SM15T68CA can sit on a 48V nominal bus (such as a 48V telecom or PoE rail) without conducting during normal operation. The minimum breakdown voltage of 64.6V provides a guard band of about 6.5V above the standoff, ensuring the diode does not clip during steady-state transients or ripple.","metaTitle":"STMicroelectronics SM15T68CA TVS Diode, 1500W, Bidirectional","metaDescription":"STMicroelectronics SM15T68CA TRANSIL™ bidirectional TVS diode. 1500W peak pulse power, 58.1V standoff, 121V clamp. DO-214AB SMC. Active, 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","Bidirectional Channels":"1","Capacitance @ Frequency":"-","Supplier Device Package":"SMC","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":"$1.0600","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/539ce92ad6505c8a9d704773ec1ef151.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/SM15T68CA/alternatives.json"},"ai":{"faq":[{"question":"What is the difference between SM15T68CA and SM15T68?","answer":"The SM15T68CA is the bidirectional version of the SM15T68, which is unidirectional. The bidirectional variant is suited for AC lines or where the polarity of the surge is unknown, while the unidirectional version is typically used on DC rails where the cathode is tied to the positive rail."},{"question":"Can SM15T68CA be used for 48V systems?","answer":"Yes, with a reverse standoff voltage of 58.1V, the SM15T68CA is a standard choice for protecting 48V nominal buses, such as telecom rectifiers or PoE power supplies, as it will not conduct during normal operation."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/SM15T68CA","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/SM15T68CA 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}}