{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SMAJ33CA-TR","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"SMAJ33CA-TR","canonicalUrl":"https://icboms.com/stmicroelectronics/SMAJ33CA-TR","factsUrl":"https://icboms.com/api/mcp/products/SMAJ33CA-TR","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics SMAJ, TRANSIL™, TVS - Diode, Zener, Bidirectional, 1 Channel, 33V Reverse Standoff, 69.7V Clamping, DO-214AC (SMA) Surface Mount, 400W Peak Pulse Power","salesMarkdown":"## 400W bidirectional TVS in a DO-214AC footprint It delivers 400 W peak pulse power (10/1000 µs waveform) and clamps at 69.7 V max, with a minimum breakdown voltage of 36.7 V. The single-channel bidirectional configuration means one device protects both polarities — useful for AC signal lines or DC rails where reverse-voltage events are possible. The 400 W peak pulse power defines the surge it can absorb — enough for typical industrial transient protection on 24 V or 28 V rails, but not a high-energy mains-grade suppressor. The 33 V reverse standoff is the maximum DC or AC peak voltage the protected line can carry without the diode conducting leakage; above that, breakdown starts at 36.7 V min. The 69.7 V clamping voltage is the peak the load sees during a surge event — the designer must ensure downstream components tolerate that ceiling. The 33 A peak pulse current at the 8/20 µs waveform is the companion rating for fast transients like ESD or cable discharge. Housed in a DO-214AC (SMA) surface-mount package, it fits standard pick-and-place and reflow processes.","metaTitle":"STMicroelectronics SMAJ33CA-TR TRANSIL™ TVS","metaDescription":"STMicroelectronics SMAJ33CA-TR TRANSIL™ bidirectional TVS diode. 400W peak pulse power, 33V standoff, 69.7V clamping. DO-214AC SMA package.","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":"SMAJ33","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)":"36.7V","Voltage - Clamping (Max) @ Ipp":"69.7V","Voltage - Reverse Standoff (Typ)":"33V","Current - Peak Pulse (10/1000µs)":"33A (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/SMAJ33CA-TR/alternatives.json"},"ai":{"faq":[{"question":"Is SMAJ33CA-TR bidirectional or unidirectional?","answer":"It is a bidirectional Zener TVS with one bidirectional channel, clamping both positive and negative transients relative to ground."},{"question":"What is the peak pulse power rating of SMAJ33CA-TR?","answer":"The peak pulse power rating is 400 W for a 10/1000 µs waveform, with a companion 33 A peak pulse current rating at the 8/20 µs waveform."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/SMAJ33CA-TR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/SMAJ33CA-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}}