{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SMAJ15A-TR","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"SMAJ15A-TR","canonicalUrl":"https://icboms.com/stmicroelectronics/SMAJ15A-TR","factsUrl":"https://icboms.com/api/mcp/products/SMAJ15A-TR","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics SMAJ, TRANSIL™ series, TVS Zener diode, 400W peak pulse power, 15V reverse standoff, 1 unidirectional channel, DO-214AC (SMA) surface mount package, -55°C to 150°C operating temperature.","salesMarkdown":"## TVS protection in a compact SMA package The STMicroelectronics SMAJ15A-TR is a unidirectional transient voltage suppression (TVS) Zener diode from the SMAJ / TRANSIL™ series, designed to clamp voltage spikes on power and signal lines. It delivers 400W peak pulse power per the 10/1000 µs waveform, with a 15V reverse standoff voltage and a clamping voltage of 32.5V at the peak pulse current of 71A (8/20 µs waveform). Packaged in a DO-214AC (SMA) surface-mount case, it suits general-purpose overvoltage protection in industrial, telecom, and consumer electronics where board space is tight. ## Voltage ratings and what they drive Breakdown occurs at a minimum of 16.7V, ensuring the diode starts clamping before the downstream circuitry sees damaging overvoltage. The 32.5V clamping voltage is the peak voltage the load sees during a transient event; verify that your powered devices can survive this level for the pulse duration. The wide range also supports reflow soldering without derating concerns.","metaTitle":"SMAJ15A-TR TRANSIL™ TVS Diode, 400W, 15V Standoff, DO-214AC","metaDescription":"STMicroelectronics SMAJ15A-TR is a 400W unidirectional TVS diode in DO-214AC (SMA) package. 15V reverse standoff, 32.5V clamping. Active lifecycle.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"STMicroelectronics","Type":"Zener","Series":"SMAJ, TRANSIL™","Package":"Tape & Reel (TR); Cut Tape (CT)","Applications":"General Purpose","Mounting Type":"Surface Mount","Package / Case":"DO-214AC, SMA","Product Status":"Active","lifecycle_stage":"eol_hot","Power - Peak Pulse":"400W","Base Product Number":"SMAJ15","Operating Temperature":"-55°C~150°C(TJ)","Power Line Protection":"No","Capacitance @ Frequency":"-","Supplier Device Package":"SMA (DO-214AC)","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"16.7V","Voltage - Clamping (Max) @ Ipp":"32.5V","Voltage - Reverse Standoff (Typ)":"15V","Current - Peak Pulse (10/1000µs)":"71A (8/20µs)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.4500","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/cb45a0c551131e855efff64db719fd1e.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/SMAJ15A-TR/alternatives.json"},"ai":{"faq":[{"question":"What is the peak pulse power of SMAJ15A-TR?","answer":"The SMAJ15A-TR is rated for 400W peak pulse power under the 10/1000 µs waveform, which defines its ability to absorb transient energy without failure."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/SMAJ15A-TR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/SMAJ15A-TR 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}}