{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SM15T10A","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"SM15T10A","canonicalUrl":"https://icboms.com/stmicroelectronics/SM15T10A","factsUrl":"https://icboms.com/api/mcp/products/SM15T10A","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics SM15T10A, TRANSIL™ series, Zener TVS diode, 1.5 kW peak pulse power, 18.6 V clamping voltage, 538 A peak pulse current (8/20 µs), DO-214AB SMC package, surface mount, -55°C to 150°C operating temperature.","salesMarkdown":"## 1.5 kW TVS in a DO-214AB — what the SM15T10A does The STMicroelectronics SM15T10A is a single-channel unidirectional Zener TVS diode from the TRANSIL™ family, designed to clamp voltage transients on general-purpose power and signal lines. It delivers 1500 W (1.5 kW) peak pulse power per the 10/1000 µs waveform, with a clamping voltage of 18.6 V at the rated peak pulse current of 538 A (8/20 µs waveform). The 8.55 V reverse standoff voltage means it stays out of the way on a nominal 5 V or 3.3 V rail, only clamping when the line exceeds the 9.5 V minimum breakdown threshold. Packaged in a DO-214AB (SMC) surface-mount case, it suits board-level transient protection in industrial controls, telecom equipment, and power supplies where a single unidirectional clamp is sufficient. The SM15T10A carries an Obsolete lifecycle status. For existing designs, the part must be sourced through independent distribution or surplus channels. The 1.5 kW peak pulse rating and DO-214AB footprint are common across the TRANSIL™ family, so a parametric replacement — such as a higher-voltage variant in the same package — may be feasible, but no pin-compatible drop-in is formally designated. Any substitution requires a review of the clamping voltage and breakdown thresholds against the protected circuit. ## Temperature range and mounting The SMC footprint is standard for 1.5 kW TVS diodes, making board layout straightforward if a replacement is needed.","metaTitle":"STMicroelectronics SM15T10A TVS Diode, 1.5 kW, 18.6 V Clamp","metaDescription":"SM15T10A TRANSIL™ Zener TVS diode, 1.5 kW peak pulse power, 18.6 V clamp, DO-214AB SMC. Request RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","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":"Obsolete","lifecycle_stage":"eol_hot","Power - Peak Pulse":"1500W (1.5kW)","Base Product Number":"SM15T","Operating Temperature":"-55°C~150°C(TJ)","Power Line Protection":"No","Capacitance @ Frequency":"-","Supplier Device Package":"SMC","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"9.5V","Voltage - Clamping (Max) @ Ipp":"18.6V","Voltage - Reverse Standoff (Typ)":"8.55V","Current - Peak Pulse (10/1000µs)":"538A (8/20µs)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.0600","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/539ce92ad6505c8a9d704773ec1ef151.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is SM15T10A obsolete and what are the alternatives?","answer":"Yes, the SM15T10A is listed as Obsolete. No official replacement order code is provided by STMicroelectronics. A functionally similar TVS diode in the same TRANSIL™ family with a 1.5 kW rating and DO-214AB package may work, but the clamping voltage and breakdown voltage must be verified against the circuit's protection requirements."},{"question":"What is the difference between SM15T10A and SM15T12A?","answer":"The key difference is the voltage rating: the SM15T10A has a reverse standoff voltage of 8.55 V and a breakdown voltage of 9.5 V (min), while the SM15T12A has a higher standoff and breakdown. Both share the same 1.5 kW peak pulse power rating and DO-214AB package — the choice depends on the nominal rail voltage you need to protect."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/SM15T10A","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/SM15T10A when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-16T15:46:08.825Z","lastPublished":"2026-07-16T15:46:08.825Z","indexable":true}}