{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SMCJ30A-TR","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"SMCJ30A-TR","canonicalUrl":"https://icboms.com/stmicroelectronics/SMCJ30A-TR","factsUrl":"https://icboms.com/api/mcp/products/SMCJ30A-TR","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics SMCJ30A-TR, TRANSIL™ series, unidirectional TVS diode, 1500W peak pulse power, 30V reverse standoff, 64.3V clamp, DO-214AB (SMC) surface mount, -55°C to 150°C.","salesMarkdown":"## 1500W clamping in a DO-214AB package It delivers 1500W peak pulse power (10/1000µs waveform) and clamps at 64.3V maximum, handling 156A peak pulse current. The DO-214AB (SMC) surface-mount package suits automated assembly for general-purpose protection on power supplies, I/O lines, and DC buses in industrial, telecom, and automotive auxiliary circuits. ## 30V standoff, 33.3V breakdown — the guard band With a 30V reverse standoff voltage, this part protects rails that normally run at or below 30V DC. The minimum breakdown voltage of 33.3V provides a 3.3V guard band above the operating rail, so the TVS stays off during normal conditions but fires before the rail sees damaging overvoltage. The 64.3V clamping voltage at 156A peak pulse current means the protected circuit must withstand that peak for the pulse duration — something to check against the downstream components' absolute maximum ratings. ## Active and RoHS compliant It is RoHS compliant, which simplifies compliance for EU-market and global designs.","metaTitle":"SMCJ30A-TR TRANSIL TVS Diode, 1500W, 30V Standoff, DO-214AB","metaDescription":"STMicroelectronics SMCJ30A-TR unidirectional TVS diode, 1500W peak pulse power, 30V reverse standoff, 64.3V clamp, DO-214AB. Active, RoHS compliant.","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":"SMCJ30","Operating Temperature":"-55°C ~ 150°C (TJ)","Power Line Protection":"No","Capacitance @ Frequency":"-","Supplier Device Package":"SMC (DO-214AB)","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"33.3V","Voltage - Clamping (Max) @ Ipp":"64.3V","Voltage - Reverse Standoff (Typ)":"30V","Current - Peak Pulse (10/1000µs)":"156A (8/20µs)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.6800","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/afa32e66ad58d9d3b67a92acb79ea14b.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/SMCJ30A-TR/alternatives.json"},"ai":{"faq":[{"question":"What is the difference between SMCJ30A-TR and SMCJ30CA?","answer":"SMCJ30A-TR is a unidirectional TVS (single channel, one direction), while SMCJ30CA is a bidirectional version. For a unipolar rail (e.g., a 30V positive supply referenced to ground), the unidirectional part is the correct choice; for AC lines or bipolar rails, the bidirectional variant fits."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/SMCJ30A-TR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/SMCJ30A-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}}