{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SMCJ28A-TR","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"SMCJ28A-TR","canonicalUrl":"https://icboms.com/stmicroelectronics/SMCJ28A-TR","factsUrl":"https://icboms.com/api/mcp/products/SMCJ28A-TR","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics TRANSIL™ SMCJ28A-TR, Zener TVS diode, 1500W peak pulse power, 28V reverse standoff, unidirectional, DO-214AB SMC package, surface mount.","salesMarkdown":"The STMicroelectronics SMCJ28A-TR is a unidirectional TRANSIL™ TVS diode rated for 1500 W peak pulse power, with a 28 V reverse standoff voltage and a 31.1 V minimum breakdown. ## Breakdown and clamping — where the protection window sits The 28 V reverse standoff is the maximum DC or peak-AC voltage the diode can tolerate without conducting appreciably. Above that, the device breaks down at 31.1 V minimum and clamps the surge to 59 V at the rated current — that 59 V ceiling is what the downstream circuitry must survive. The SMC (DO-214AB) package is a standard surface-mount outline with a JEDEC-registered footprint. The copper pad area under the package on the PCB sets the thermal impedance.","metaTitle":"SMCJ28A-TR STMicroelectronics TVS Diode, 1500W, 28V Standoff","metaDescription":"SMCJ28A-TR TRANSIL™ TVS diode, 1500W peak pulse power, 28V reverse standoff, unidirectional, DO-214AB SMC.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"STMicroelectronics","Type":"Zener","Series":"SMCJ, 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":"SMCJ28","Operating Temperature":"-55°C~150°C(TJ)","Power Line Protection":"No","Capacitance @ Frequency":"-","Supplier Device Package":"SMC (DO-214AB)","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"31.1V","Voltage - Clamping (Max) @ Ipp":"59V","Voltage - Reverse Standoff (Typ)":"28V","Current - Peak Pulse (10/1000µs)":"169A (8/20µs)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.6900","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/afa32e66ad58d9d3b67a92acb79ea14b.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/SMCJ28A-TR/alternatives.json"},"ai":{"faq":[{"question":"Is SMCJ28A-TR unidirectional or bidirectional?","answer":"It is a single-channel unidirectional device, meaning it protects one rail against positive transients referenced to ground."},{"question":"What package does SMCJ28A-TR come in and is it surface mount?","answer":"It comes in a DO-214AB (SMC) package, which is a surface-mount package."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/SMCJ28A-TR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/SMCJ28A-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}}