{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SMBJ170A-TR","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"SMBJ170A-TR","canonicalUrl":"https://icboms.com/stmicroelectronics/SMBJ170A-TR","factsUrl":"https://icboms.com/api/mcp/products/SMBJ170A-TR","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics SMBJ, TRANSIL™ series, Type Zener, SMBJ170A-TR, 170V reverse standoff, 189V min breakdown, 275V clamp, 600W peak pulse, 2.2A, 1 unidirectional channel, DO-214AA SMB, -55°C to 150°C.","salesMarkdown":"## 600W TVS for 170V rails — what the ratings mean The STMicroelectronics SMBJ170A-TR is a unidirectional transient voltage suppressor from the TRANSIL™ SMBJ series, designed to clamp overvoltage transients on DC power rails up to 170V. Despite the 'Zener' type classification, this is a TVS diode — its job is surge clamping, not voltage regulation. The 189V minimum breakdown voltage ensures the device stays out of conduction during normal 170V operation, while the 275V maximum clamp at 2.2A limits the let-through voltage during a 10/1000µs surge event. The single unidirectional channel makes it a fit for positive-rail protection where reverse polarity is handled separately. Housed in the DO-214AA (SMB) surface-mount package, the SMBJ170A-TR fits standard pick-and-place assembly. No power line protection feature — this is a standalone TVS, not a filtered or integrated protector.","metaTitle":"SMBJ170A-TR TVS Diode, 170V Standoff, 275V Clamp, 600W","metaDescription":"STMicroelectronics SMBJ170A-TR unidirectional TVS diode: 170V reverse standoff, 189V min breakdown, 275V clamp at 2.2A, 600W peak pulse power.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"STMicroelectronics","Type":"Zener","Series":"SMBJ, TRANSIL™","Package":"Tape & Reel (TR); Cut Tape (CT)","Applications":"General Purpose","Mounting Type":"Surface Mount","Package / Case":"DO-214AA, SMB","Product Status":"Active","lifecycle_stage":"eol_hot","Power - Peak Pulse":"600W","Base Product Number":"SMBJ170","Operating Temperature":"-55°C~150°C(TJ)","Power Line Protection":"No","Capacitance @ Frequency":"-","Supplier Device Package":"SMB (DO-214AA)","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"189V","Voltage - Clamping (Max) @ Ipp":"275V","Voltage - Reverse Standoff (Typ)":"170V","Current - Peak Pulse (10/1000µs)":"2.2A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.4300","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/28916e022258112f057e7568b7920d5a.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/SMBJ170A-TR/alternatives.json"},"ai":{"faq":[{"question":"Is SMBJ170A-TR unidirectional or bidirectional?","answer":"It is a single-channel unidirectional TVS, suitable for protecting a positive DC rail against positive-going transients. For AC or bidirectional protection, a bidirectional variant from the same SMBJ family would be needed."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/SMBJ170A-TR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/SMBJ170A-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}}