{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SMAJ22CA-TR","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"SMAJ22CA-TR","canonicalUrl":"https://icboms.com/stmicroelectronics/SMAJ22CA-TR","factsUrl":"https://icboms.com/api/mcp/products/SMAJ22CA-TR","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics SMAJ, TRANSIL™ series, Type Zener, Bidirectional Channels 1, Voltage - Reverse Standoff (Typ) 22V, Voltage - Clamping (Max) @ Ipp 48.3V, Power - Peak Pulse 400W, Package / Case DO-214AC, SMA, Operating Temperature -55°C~150°C(TJ).","salesMarkdown":"## Bidirectional TVS for 22V rail protection It offers a single bidirectional channel in a surface-mount DO-214AC (SMA) package, rated for a peak pulse power of 400W and a clamping voltage of 48.3V at the peak pulse current of 48A (8/20µs waveform). The 22V reverse standoff voltage (V_RWM) means this device will not conduct appreciably below 22V, so it sits quietly across a 22V supply rail. When a transient exceeds the minimum breakdown voltage of 24.4V, the TVS clamps the surge to a maximum of 48.3V. The 48A peak pulse current rating (8/20µs waveform) gives the energy-handling capacity for typical ESD or lightning-induced surges. For a 22V rail, the clamping margin is about 2.2× the rail voltage — adequate for most ICs rated at 30V or higher, but check the downstream device's absolute maximum rating against 48.3V. Buyers should evaluate a pin-compatible alternative from the same SMAJ family for new designs or long-term production support.","metaTitle":"STMicroelectronics SMAJ22CA-TR TVS Diode, 400W Bidirectional","metaDescription":"STMicroelectronics SMAJ22CA-TR bidirectional TVS diode, 22V standoff, 48.3V clamping, 400W peak pulse. Request quote.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","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":"Obsolete","lifecycle_stage":"eol_hot","Power - Peak Pulse":"400W","Base Product Number":"SMAJ","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)":"24.4V","Voltage - Clamping (Max) @ Ipp":"48.3V","Voltage - Reverse Standoff (Typ)":"22V","Current - Peak Pulse (10/1000µs)":"48A (8/20µs)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/cb45a0c551131e855efff64db719fd1e.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/SMAJ22CA-TR/alternatives.json"},"ai":{"faq":[{"question":"What is the replacement for SMAJ22CA-TR?","answer":"STMicroelectronics has not published an official replacement order code for the SMAJ22CA-TR. A functionally equivalent bidirectional TVS in the same SMAJ family with a 22V standoff and 400W rating can be sourced from the same series — verify the exact breakdown and clamping voltage match your design. For new designs, consider a current-production SMAJ series part with identical ratings."},{"question":"Can SMAJ22CA-TR be used for 22V protection?","answer":"Yes. The 22V reverse standoff voltage (V_RWM) is designed for protecting a 22V nominal rail. The device will not conduct below 22V, and clamps transients to a maximum of 48.3V. Ensure downstream components can withstand the clamping voltage."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/SMAJ22CA-TR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/SMAJ22CA-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}}