{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SMCJ70A-TR","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"SMCJ70A-TR","canonicalUrl":"https://icboms.com/stmicroelectronics/SMCJ70A-TR","factsUrl":"https://icboms.com/api/mcp/products/SMCJ70A-TR","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics SMCJ, TRANSIL™, TVS Diode, Type Zener, 1500W (1.5kW) Peak Pulse Power, 70V Reverse Standoff, 146V Clamping, 1 Unidirectional Channel, DO-214AB SMC Package, -55°C~150°C Operating Temperature.","salesMarkdown":"## TVS diode with 1500 W peak pulse capability — what it protects It clamps voltage transients on a 70 V nominal rail, with breakdown starting at 77.8 V and clamping at 146 V at 69 A. ## Voltage ratings and the clamping decision The 70 V reverse standoff voltage sets the maximum continuous DC the rail can carry without conducting. The 77.8 V minimum breakdown ensures clamping before the rail exceeds its absolute maximum. The 146 V clamping at 69 A defines the surge survival voltage. ## DO-214AB SMC package — footprint and reflow The DO-214AB (SMC) package is a standard surface-mount outline for TVS diodes.","metaTitle":"STMicroelectronics SMCJ70A-TR TVS Diode, 1500W, 70V Standoff","metaDescription":"STMicroelectronics SMCJ70A-TR TRANSIL™ TVS diode, 1500W peak pulse power, 70V reverse standoff, 146V clamping, DO-214AB SMC.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"STMicroelectronics","Type":"Zener","Series":"SMCJ, TRANSIL™","Package":"Tape & Reel (TR)","Applications":"General Purpose","Mounting Type":"Surface Mount","Package / Case":"DO-214AB, SMC","Product Status":"Obsolete","lifecycle_stage":"eol_hot","Power - Peak Pulse":"1500W (1.5kW)","Base Product Number":"SMCJ","Operating Temperature":"-55°C~150°C(TJ)","Power Line Protection":"No","Capacitance @ Frequency":"-","Supplier Device Package":"SMC","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"77.8V","Voltage - Clamping (Max) @ Ipp":"146V","Voltage - Reverse Standoff (Typ)":"70V","Current - Peak Pulse (10/1000µs)":"69A (8/20µs)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/afa32e66ad58d9d3b67a92acb79ea14b.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/SMCJ70A-TR/alternatives.json"},"ai":{"faq":[{"question":"What is the replacement for SMCJ70A-TR?","answer":"The SMCJ family (base product number SMCJ) includes other voltage variants in the same DO-214AB package, but a direct voltage-for-voltage substitute — 70 V standoff, 1500 W — would need to be evaluated from other manufacturers or from ST's own SMCJ70A (non-TR suffix) if still available through surplus. Cross-reference with a part like the Littelfuse SMCJ70A or Vishay SMCJ70A is common, but verify the clamping voltage and peak pulse current match your design margin."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/SMCJ70A-TR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/SMCJ70A-TR when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T19:50:00.618Z","lastPublished":"2026-07-17T19:50:00.618Z","indexable":true}}