{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SMAJ48A-TR","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"SMAJ48A-TR","canonicalUrl":"https://icboms.com/stmicroelectronics/SMAJ48A-TR","factsUrl":"https://icboms.com/api/mcp/products/SMAJ48A-TR","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics SMAJ48A-TR, TRANSIL™ TVS diode, Type Zener, 48V reverse standoff, 400W peak pulse power, 1 unidirectional channel, DO-214AC (SMA) surface mount, -55°C to 150°C.","salesMarkdown":"Its 48 V reverse standoff voltage means it sits across the supply without conducting during normal operation, then triggers at a minimum breakdown of 53.3 V to shunt the surge. The clamping voltage peaks at 100 V at the rated 23 A peak pulse current, so the downstream circuitry needs to survive that ceiling. This is a Zener-type TVS, not a steering-diode array; it protects one rail, not multiple signal lines. ## Package and footprint — DO-214AC SMA This is a common footprint shared across the SMAJ family and many other TVS diodes, so the PCB layout is straightforward — two pads, cathode band marked.","metaTitle":"STMicroelectronics SMAJ48A-TR TVS Diode, 48V Standoff, 400W","metaDescription":"SMAJ48A-TR TRANSIL™ TVS diode, 48V reverse standoff, 400W peak pulse power, DO-214AC SMA package. 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":"SMAJ48","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)":"53.3V","Voltage - Clamping (Max) @ Ipp":"100V","Voltage - Reverse Standoff (Typ)":"48V","Current - Peak Pulse (10/1000µs)":"23A (8/20µs)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.5000","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/cb45a0c551131e855efff64db719fd1e.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/SMAJ48A-TR/alternatives.json"},"ai":{"faq":[{"question":"What package and polarity does SMAJ48A-TR have?","answer":"It is a unidirectional (single-channel) TVS in a DO-214AC (SMA) surface-mount package. The cathode is marked on the body."},{"question":"Is SMAJ48A-TR RoHS compliant?","answer":"The evidence does not explicitly state RoHS compliance status. Verify with the manufacturer's 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/SMAJ48A-TR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/SMAJ48A-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}}