{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SMAJ70CA-TR","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"SMAJ70CA-TR","canonicalUrl":"https://icboms.com/stmicroelectronics/SMAJ70CA-TR","factsUrl":"https://icboms.com/api/mcp/products/SMAJ70CA-TR","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics SMAJ, TRANSIL™ series, Type Zener, Bidirectional TVS Diode, 400W Peak Pulse Power, 70V Reverse Standoff, 77.8V Min Breakdown, 146V Clamping, DO-214AC SMA Package, Surface Mount, -55°C~150°C.","salesMarkdown":"## What the SMAJ70CA-TR protects and how it sits on the board It clamps transients on a 70V nominal rail, with a minimum breakdown voltage of 77.8V and a maximum clamping voltage of 146V at 16A peak pulse current. ## Rework and board-level handling The DO-214AC SMA body is small enough that a hot-air station set to 260°C peak with a gentle ramp lifts the part cleanly — no pad lifting if you preheat the board to 150°C first. The cathode band is the only orientation mark, and on a bidirectional part like this one the band is decorative; polarity doesn't matter for the clamping circuit. MSL 1 out of the bag, so no bake required even after a long shelf dwell. It's a standard production part from STMicroelectronics, available through independent distribution.","metaTitle":"STMicroelectronics SMAJ70CA-TR TVS Diode, 400W","metaDescription":"STMicroelectronics SMAJ70CA-TR bidirectional TVS diode, 400W peak pulse power, 77.8V min breakdown, DO-214AC SMA. Active production.","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":"SMAJ70","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)":"77.8V","Voltage - Clamping (Max) @ Ipp":"146V","Voltage - Reverse Standoff (Typ)":"70V","Current - Peak Pulse (10/1000µs)":"16A (8/20µs)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.4400","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/cb45a0c551131e855efff64db719fd1e.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/SMAJ70CA-TR/alternatives.json"},"ai":{"faq":[{"question":"Is SMAJ70CA-TR bidirectional?","answer":"Yes, it is a bidirectional TVS diode with a single protection channel. It clamps both positive and negative transients symmetrically, so polarity on the PCB doesn't matter."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/SMAJ70CA-TR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/SMAJ70CA-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}}