{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SMAJ170CA-TR","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"SMAJ170CA-TR","canonicalUrl":"https://icboms.com/stmicroelectronics/SMAJ170CA-TR","factsUrl":"https://icboms.com/api/mcp/products/SMAJ170CA-TR","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics SMAJ, TRANSIL™ series, Type Zener, Bidirectional Channels 1, Voltage - Reverse Standoff (Typ) 170V, Voltage - Breakdown (Min) 189V, Voltage - Clamping (Max) @ Ipp 353V, Power - Peak Pulse 400W, Package / Case DO-214AC, SMA, Operating Temperature -55°C~150°C(TJ).","salesMarkdown":"## 170V rail protection — what the ratings tell you Its 189V minimum breakdown voltage guarantees the device starts conducting before the protected circuitry sees an overvoltage, while the 353V maximum clamping at the peak pulse current of 6.5A (8/20µs waveform) defines the worst-case voltage the load must survive. The 400W peak pulse power rating sets the energy-handling budget for a single surge event. With a single bidirectional channel, this TVS clamps positive and negative transients symmetrically. That saves a diode pair on AC lines or on signal pairs where the polarity is unknown. ## Package and footprint — DO-214AC (SMA) Surface-mount in the DO-214AC (SMA) package, the same footprint used across the SMAJ family. The JEDEC standard land pattern for SMA applies; no special thermal pad or via array needed for the 400W pulse rating, though keeping the trace width adequate for the peak current avoids inductive voltage drop.","metaTitle":"STMicroelectronics SMAJ170CA-TR TVS Diode","metaDescription":"STMicroelectronics SMAJ170CA-TR bidirectional TVS diode, 170V reverse standoff, 189V min breakdown, 353V clamping, 400W peak pulse power, DO-214AC SMA package.","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":"SMAJ170","Operating Temperature":"-55°C~150°C(TJ)","Power Line Protection":"No","Bidirectional Channels":"1","Capacitance @ Frequency":"-","Supplier Device Package":"SMA (DO-214AC)","Voltage - Breakdown (Min)":"189V","Voltage - Clamping (Max) @ Ipp":"353V","Voltage - Reverse Standoff (Typ)":"170V","Current - Peak Pulse (10/1000µs)":"6.5A (8/20µs)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.4900","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/cb45a0c551131e855efff64db719fd1e.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/SMAJ170CA-TR/alternatives.json"},"ai":{"faq":[{"question":"Can I use SMAJ170CA-TR for 170V bidirectional protection?","answer":"Yes. The 170V reverse standoff voltage matches the nominal rail, and the bidirectional construction handles transients of either polarity. The 189V minimum breakdown ensures the clamp triggers before the rail exceeds the downstream device's voltage tolerance, and the 353V maximum clamping defines the let-through voltage at peak pulse current."},{"question":"Is SMAJ170CA-TR RoHS compliant?","answer":"The evidence does not explicitly state RoHS compliance status. Verify with the manufacturer's latest documentation or request a certificate of compliance at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/SMAJ170CA-TR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/SMAJ170CA-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}}