{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SMCJ33CA-TR","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"SMCJ33CA-TR","canonicalUrl":"https://icboms.com/stmicroelectronics/SMCJ33CA-TR","factsUrl":"https://icboms.com/api/mcp/products/SMCJ33CA-TR","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics SMCJ33CA-TR, TRANSIL™ series, Bidirectional Zener TVS Diode, 33V Reverse Standoff, 36.7V Breakdown, 69.7V Clamp, 1500W Peak Pulse Power, DO-214AB SMC Package, -55°C to 150°C.","salesMarkdown":"## 1500W bidirectional transient suppressor for 33V rails It delivers 1500W peak pulse power (1.5kW) across a 10/1000µs waveform, with a clamping voltage of 69.7V at the peak pulse current of 143A (8/20µs waveform). ## Voltage protection window for a 33V bus The reverse standoff voltage is 33V, meaning the diode draws negligible leakage current at normal operating levels. This window ensures the protected rail sees no more than 69.7V during a surge event, which is compatible with 33V-rated downstream components that have a typical absolute maximum of 40V to 50V. ## Peak pulse current and waveform handling Rated for 143A peak pulse current under the 8/20µs waveform, this device handles short-duration lightning or switching transients common on power and signal lines. The 1500W rating at 10/1000µs gives the designer a margin for longer-duration surges — the actual energy dissipation depends on the pulse shape and duty cycle. ## Package and mounting for board-level protection Housed in a DO-214AB (SMC) surface-mount package, the SMCJ33CA-TR is suited for automated assembly on standard PCB footprints.","metaTitle":"STMicroelectronics SMCJ33CA-TR TVS Diode","metaDescription":"SMCJ33CA-TR bidirectional TVS diode, 33V standoff, 36.7V breakdown, 69.7V clamp at 143A peak pulse current. 1500W peak pulse power.","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":"SMCJ33","Operating Temperature":"-55°C~150°C(TJ)","Power Line Protection":"No","Bidirectional Channels":"1","Capacitance @ Frequency":"-","Supplier Device Package":"SMC","Voltage - Breakdown (Min)":"36.7V","Voltage - Clamping (Max) @ Ipp":"69.7V","Voltage - Reverse Standoff (Typ)":"33V","Current - Peak Pulse (10/1000µs)":"143A (8/20µs)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.7200","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/afa32e66ad58d9d3b67a92acb79ea14b.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/SMCJ33CA-TR/alternatives.json"},"ai":{"faq":[{"question":"Is SMCJ33CA-TR equivalent to SMCJ33A?","answer":"The SMCJ33A is a unidirectional version of the same 33V standoff TVS. The SMCJ33CA-TR is bidirectional, meaning it clamps both positive and negative transients, while the SMCJ33A clamps only one polarity. Both share the same 1500W peak pulse power and DO-214AB package, so they are footprint-compatible but not electrically interchangeable in a circuit that requires bidirectional protection."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/SMCJ33CA-TR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/SMCJ33CA-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}}