{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SM15T150CA","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"SM15T150CA","canonicalUrl":"https://icboms.com/stmicroelectronics/SM15T150CA","factsUrl":"https://icboms.com/api/mcp/products/SM15T150CA","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics SM15T150CA, TRANSIL™ series, bidirectional TVS diode, 1500W peak pulse power, 128V reverse standoff, 265V clamping, DO-214AB SMC surface-mount package, -55°C to 150°C junction.","salesMarkdown":"## What the SM15T150CA protects and how it fits The STMicroelectronics SM15T150CA is a 1500W bidirectional TVS diode from the TRANSIL™ family, designed to clamp transients on general-purpose power and signal lines. Its 128V reverse standoff voltage means it stays transparent below that DC level, then breaks down at a minimum of 143V and clamps at 265V maximum under the 10/1000µs pulse waveform. The single bidirectional channel handles ±38A peak pulse current (8/20µs shape), making it a fit for 48V telecom rails, industrial DC buses, or any 128V-rated line that needs surge protection without polarity concerns. ## Surface-mount DO-214AB SMC — footprint and reflow The SM15T150CA comes in a DO-214AB SMC package, a standard surface-mount footprint for 1500W-class TVS diodes. It sits flat on the board with no through-hole leads, so reflow profile and solder paste volume follow the usual SMC guidelines.","metaTitle":"SM15T150CA TVS Diode, 1500W, 128V Reverse Standoff","metaDescription":"STMicroelectronics SM15T150CA bidirectional TVS diode, 1500W peak pulse, 128V reverse standoff, 265V clamping. DO-214AB SMC package.","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":"SM15T150","Operating Temperature":"-55°C~150°C(TJ)","Power Line Protection":"No","Bidirectional Channels":"1","Capacitance @ Frequency":"-","Supplier Device Package":"SMC","Voltage - Breakdown (Min)":"143V","Voltage - Clamping (Max) @ Ipp":"265V","Voltage - Reverse Standoff (Typ)":"128V","Current - Peak Pulse (10/1000µs)":"38A (8/20µs)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.9700","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/539ce92ad6505c8a9d704773ec1ef151.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is SM15T150CA bidirectional?","answer":"Yes, it is a single bidirectional channel. That means it clamps transients of either polarity, so you do not need to orient it on the board — useful for AC-coupled or bipolar signal lines."},{"question":"What is the difference between SM15T150CA and SM15T150A?","answer":"The SM15T150A is the unidirectional version of the same die. The SM15T150CA adds a second back-to-back junction for bidirectional clamping. Electrically, the breakdown and clamping voltages are identical; the only difference is polarity handling. If your line is DC with a known ground reference, the unidirectional A version works. For AC or unknown polarity, use the CA."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/SM15T150CA","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/SM15T150CA when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-16T14:25:56.441Z","lastPublished":"2026-07-16T14:25:56.441Z","indexable":true}}