{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SMBJ30CA-TR","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"SMBJ30CA-TR","canonicalUrl":"https://icboms.com/stmicroelectronics/SMBJ30CA-TR","factsUrl":"https://icboms.com/api/mcp/products/SMBJ30CA-TR","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics TRANSIL™ series SMBJ30CA-TR bidirectional TVS diode, 600W peak pulse power, 30V reverse standoff, 33.3V min breakdown, 48.4V max clamping, 13A peak pulse current, DO-214AA SMB package, -55°C to 150°C.","salesMarkdown":"## TRANSIL™ bidirectional TVS for 30 V rail protection The STMicroelectronics SMBJ30CA-TR is a bidirectional Zener-type transient voltage suppression diode from the TRANSIL™ SMBJ series, designed to clamp overvoltage events on a 30 V nominal rail. It delivers 600 W peak pulse power per the 10/1000 µs waveform, with a minimum breakdown voltage of 33.3 V and a maximum clamping voltage of 48.4 V at the rated 13 A peak pulse current. The DO-214AA (SMB) surface-mount package suits automated assembly for general-purpose protection in industrial, telecom, and power-supply circuits. ## Clamping voltage and surge current — what they mean for rail protection The 48.4 V max clamping voltage at 13 A peak pulse current sets the upper bound the protected circuitry must survive. For a 30 V rail, that's roughly 1.6× the nominal — a typical margin for downstream components rated at 60 V or higher. The 600 W peak pulse rating assumes the standard 10/1000 µs double-exponential waveform; shorter pulses (e.g. 8/20 µs) allow higher peak current, but the datasheet's 13 A figure at 10/1000 µs is the conservative reference for worst-case coordination. Bidirectional construction (single device, one channel) means polarity-independent clamping — no concern about reverse insertion on AC signal lines or floating DC rails. The 33.3 V minimum breakdown ensures the device stays transparent below the nominal rail voltage plus tolerance. Housed in the DO-214AA (SMB) body — a low-profile, JEDEC-registered surface-mount package with tin-plated terminations. No power line protection feature (internal diode structure only; no integrated series element).","metaTitle":"STMicroelectronics SMBJ30CA-TR Bidirectional TVS Diode, 600W","metaDescription":"STMicroelectronics SMBJ30CA-TR bidirectional TVS diode, 600W peak pulse power, 30V standoff, 48.4V clamping. DO-214AA SMB package. Active, available to order.","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":"SMBJ30","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)":"33.3V","Voltage - Clamping (Max) @ Ipp":"48.4V","Voltage - Reverse Standoff (Typ)":"30V","Current - Peak Pulse (10/1000µs)":"13A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.4900","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/28916e022258112f057e7568b7920d5a.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/SMBJ30CA-TR/alternatives.json"},"ai":{"faq":[{"question":"Is SMBJ30CA-TR bidirectional?","answer":"Yes, it has one bidirectional channel, clamping equally in both polarities."},{"question":"What is the difference between SMBJ30CA and SMBJ30CA-TR?","answer":"The base part is identical; the -TR suffix indicates Tape & Reel packaging. The SMBJ30CA may be offered in other packing options (e.g. bulk or tube), while SMBJ30CA-TR is specifically reeled for automated assembly."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/SMBJ30CA-TR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/SMBJ30CA-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}}