{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SMBJ12CA-TR","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"SMBJ12CA-TR","canonicalUrl":"https://icboms.com/stmicroelectronics/SMBJ12CA-TR","factsUrl":"https://icboms.com/api/mcp/products/SMBJ12CA-TR","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics SMBJ12CA-TR, TRANSIL™ series, bidirectional TVS diode, 600W peak pulse power, 12V reverse standoff voltage, 19.9V clamping at 31A, DO-214AA SMB package, surface mount, -55°C to 150°C.","salesMarkdown":"## What this TVS diode protects and how it clamps It delivers 600 W peak pulse power per the 10/1000 µs waveform, with a breakdown voltage minimum of 13.3 V and a maximum clamping voltage of 19.9 V at 31 A peak pulse current. The single bidirectional channel protects both polarities from a single DO-214AA (SMB) package, simplifying layout for AC-coupled or bipolar supply lines. The 600 W rating at 10/1000 µs defines the energy the part can absorb in a single surge event without failing. For a 12 V rail, the 19.9 V clamp voltage means the protected circuitry sees a maximum of about 20 V during the transient — well within the typical 30 V absolute maximum of many downstream regulators and logic ICs. The 31 A peak pulse current tells you the surge current the diode can shunt; ensure the PCB trace from the TVS to the transient source is wide enough to carry that peak without inductive drop or fusing. No power line protection is claimed — this is a general-purpose transient suppressor, not a dedicated AC mains protector.","metaTitle":"STMicroelectronics SMBJ12CA-TR TVS Diode, 600W, 12V Standoff","metaDescription":"Bidirectional Zener TVS diode, 600W peak pulse power, 12V reverse standoff, 19.9V clamping at 31A. Active lifecycle, DO-214AA SMB package.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"STMicroelectronics","Type":"Zener","Series":"SMBJ, TRANSIL™","Package":"Tape & Reel (TR); Cut Tape (CT)","Applications":"General Purpose","Mounting Type":"Surface Mount","Package / Case":"DO-214AA, SMB","Product Status":"Active","lifecycle_stage":"eol_hot","Power - Peak Pulse":"600W","Base Product Number":"SMBJ12","Operating Temperature":"-55°C~150°C(TJ)","Power Line Protection":"No","Bidirectional Channels":"1","Capacitance @ Frequency":"-","Supplier Device Package":"SMB (DO-214AA)","Voltage - Breakdown (Min)":"13.3V","Voltage - Clamping (Max) @ Ipp":"19.9V","Voltage - Reverse Standoff (Typ)":"12V","Current - Peak Pulse (10/1000µs)":"31A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.5200","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/28916e022258112f057e7568b7920d5a.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/SMBJ12CA-TR/alternatives.json"},"ai":{"faq":[{"question":"What is the difference between SMBJ12CA-TR and SMBJ12A-TR?","answer":"The SMBJ12CA-TR is a bidirectional device (one channel protects both polarities), while the SMBJ12A-TR is unidirectional. For a 12 V DC rail where the ground reference is fixed, the unidirectional version may be sufficient; for AC or floating lines, the bidirectional SMBJ12CA-TR is the correct choice."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/SMBJ12CA-TR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/SMBJ12CA-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}}