{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SM15T12CA","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"SM15T12CA","canonicalUrl":"https://icboms.com/stmicroelectronics/SM15T12CA","factsUrl":"https://icboms.com/api/mcp/products/SM15T12CA","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics SM15T12CA, TRANSIL™ series, bidirectional Zener TVS diode, 1500W peak pulse power, 10.2V reverse standoff, 21.7V clamping, DO-214AB SMC package, surface mount, -55°C to 150°C junction temperature.","salesMarkdown":"## 1500W peak pulse power in a DO-214AB SMC package The STMicroelectronics SM15T12CA is a bidirectional Zener TVS diode from the TRANSIL™ SM15T series, designed to clamp voltage transients on a single line. It delivers 1500W of peak pulse power per the 10/1000µs waveform, with a reverse standoff voltage of 10.2V and a maximum clamping voltage of 21.7V at the peak pulse current of 461A (8/20µs waveform). This part is a general-purpose transient suppressor suited for power supply rails, I/O lines, and telecom interfaces where a single bidirectional device protects against surges of either polarity. The 21.7V clamping voltage at the 8/20µs peak pulse current of 461A tells you the maximum voltage the downstream circuitry will see during a surge event. For a 12V rail, this leaves a 9.7V margin above the nominal — enough to keep most 12V-rated ICs within their absolute maximum ratings if the trace inductance is managed. The 1500W rating at 10/1000µs is the standard telecom surge waveform; the part also handles the shorter 8/20µs waveform at a higher peak current, which is the common industrial ESD/surge combination. The bidirectional configuration means a single SM15T12CA replaces two unidirectional diodes back-to-back, saving board space and BOM count on AC-coupled or bipolar signal lines.","metaTitle":"SM15T12CA Bidirectional TVS Diode, 1500W Peak Pulse Power","metaDescription":"STMicroelectronics SM15T12CA bidirectional TVS diode, 1500W peak pulse power, 10.2V reverse standoff, 21.7V clamping, DO-214AB SMC package, -55°C to 150°C.","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":"SM15T12","Operating Temperature":"-55°C~150°C(TJ)","Power Line Protection":"No","Bidirectional Channels":"1","Capacitance @ Frequency":"-","Supplier Device Package":"SMC","Voltage - Breakdown (Min)":"11.4V","Voltage - Clamping (Max) @ Ipp":"21.7V","Voltage - Reverse Standoff (Typ)":"10.2V","Current - Peak Pulse (10/1000µs)":"461A (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 SM15T12CA a bidirectional TVS diode?","answer":"Yes, the SM15T12CA is a single bidirectional channel, protecting one line against surges of either polarity."},{"question":"What is the peak pulse power of SM15T12CA?","answer":"The SM15T12CA is rated for 1500W peak pulse power per the 10/1000µs waveform."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/SM15T12CA","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/SM15T12CA when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-16T15:42:11.781Z","lastPublished":"2026-07-16T15:42:11.781Z","indexable":true}}