{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SM15T24A","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"SM15T24A","canonicalUrl":"https://icboms.com/stmicroelectronics/SM15T24A","factsUrl":"https://icboms.com/api/mcp/products/SM15T24A","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics SM15T24A, TRANSIL™ TVS, Zener, 1500W peak pulse, 20.5V reverse standoff, 42.8V clamping, 234A (8/20µs), DO-214AB SMC, -55°C~150°C.","salesMarkdown":"The STMicroelectronics SM15T24A is a single-channel, unidirectional TRANSIL™ TVS diode in the SM15T series, rated for 1500W peak pulse power (10/1000µs waveform). That 1.5 kW rating means it can clamp a substantial transient without self-destructing — think motor-drive inductive kickback, lightning-induced surges on outdoor cabling, or load-dump events in industrial 24V DC rails. The 20.5V reverse standoff voltage sits below the nominal 24V bus, so it stays out of the way during normal operation and only conducts when the line spikes above 22.8V typical breakdown. ## Clamping voltage and surge current — the protection envelope When the transient hits, the SM15T24A clamps at a maximum of 42.8V while shunting up to 234A of peak pulse current (8/20µs waveform). That 42.8V ceiling is the number you check against the absolute-maximum voltage rating of your downstream power-stage components — if the DC-DC converter or load switch can't survive 43V, you need a higher-voltage TVS or a secondary clamp. The 234A peak current rating gives headroom for short, high-energy surges common in industrial and telecom environments. ## Package and temperature range Housed in a DO-214AB (SMC) surface-mount package, the SM15T24A is a standard footprint for this power class — rework-friendly, solder-reflow compatible, and widely second-sourced.","metaTitle":"STMicroelectronics SM15T24A TRANSIL TVS","metaDescription":"STMicroelectronics SM15T24A TRANSIL TVS diode, 1500W peak pulse power, 20.5V reverse standoff, 42.8V clamping. DO-214AB SMC package. Active production.","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":"SM15T24","Operating Temperature":"-55°C~150°C(TJ)","Power Line Protection":"No","Capacitance @ Frequency":"-","Supplier Device Package":"SMC","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"22.8V","Voltage - Clamping (Max) @ Ipp":"42.8V","Voltage - Reverse Standoff (Typ)":"20.5V","Current - Peak Pulse (10/1000µs)":"234A (8/20µs)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.8700","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/539ce92ad6505c8a9d704773ec1ef151.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is SM15T24A a direct replacement for SM15T24?","answer":"Yes, the SM15T24A is the standard unidirectional variant of the base SM15T24 part number. The 'A' suffix typically denotes a tighter tolerance or standard production version; electrically, the breakdown and clamping specs are identical for practical purposes. It is a drop-in replacement in the same DO-214AB footprint."},{"question":"Does SM15T24A meet automotive specifications?","answer":"The SM15T24A is not explicitly listed as AEC-Q101 qualified in the available specifications. For non-automotive industrial or telecom use, it is fully specified."},{"question":"Can SM15T24A be used for 24V systems?","answer":"Yes. The 20.5V reverse standoff voltage is selected specifically for protecting 24V nominal DC rails. The device remains non-conductive below 20.5V and only clamps during overvoltage events, making it a standard choice for 24V industrial control, telecom, and power-supply inputs."},{"question":"Is SM15T24A RoHS compliant?","answer":"The SM15T24A is listed with a Tape & Reel and Cut Tape packaging option, and as a current-production STMicroelectronics TRANSIL device, it is manufactured RoHS-compliant per standard industry practice. Specific RoHS certificate details are available in the product datasheet."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/SM15T24A","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/SM15T24A when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-16T14:45:54.178Z","lastPublished":"2026-07-16T14:45:54.178Z","indexable":true}}