{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SMCJ30CA-TR","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"SMCJ30CA-TR","canonicalUrl":"https://icboms.com/stmicroelectronics/SMCJ30CA-TR","factsUrl":"https://icboms.com/api/mcp/products/SMCJ30CA-TR","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics SMCJ30CA-TR, TRANSIL™ series, bidirectional TVS diode, 1500W peak pulse power, 30V reverse standoff, 64.3V clamping, DO-214AB SMC package, surface mount.","salesMarkdown":"## 1500W bidirectional TVS for 30V rails Its single bidirectional channel protects both polarities with one device — useful for AC-coupled interfaces or symmetric supply rails where space is tight. The 1500W peak pulse power rating (10/1000µs waveform) defines the surge energy it can absorb; the 64.3V maximum clamp voltage at 156A peak pulse current (8/20µs waveform) tells you the let-through voltage the downstream circuitry must survive. General-purpose application coverage means it fits into industrial control, telecom, or power-supply secondary-side protection without qualification restrictions. ## Voltage thresholds and clamping behaviour Breakdown starts at 33.3V minimum, so a 30V rail with ±5% tolerance stays below the trigger threshold. At full rated surge current the clamp voltage reaches 64.3V — that is the voltage the protected circuit must tolerate during the transient event. If the downstream components have a 60V absolute maximum, this part leaves only 4.3V margin at the clamp peak; a higher-voltage TVS or series resistance may be needed. Housed in the DO-214AB (SMC) package, a standard surface-mount footprint for medium-power TVS diodes. The SMC body handles the 1500W pulse without requiring a heatsink in most PCB layouts — the copper pad and trace area typically provide enough thermal mass for the short-duration transient. There is no official successor — the part is the current offering. For BOM planning, this avoids the last-time-buy scramble that obsolete TVS parts trigger.","metaTitle":"STMicroelectronics SMCJ30CA-TR TVS Diode, 1500W","metaDescription":"SMCJ30CA-TR 1500W bidirectional TVS diode from STMicroelectronics, 30V standoff, 64.3V clamp, DO-214AB SMC package. Active lifecycle, 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":"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","Bidirectional Channels":"1","Capacitance @ Frequency":"-","Supplier Device Package":"SMC","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":"$0.7200","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/afa32e66ad58d9d3b67a92acb79ea14b.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/SMCJ30CA-TR/alternatives.json"},"ai":{"faq":[{"question":"What is the peak pulse power of SMCJ30CA-TR?","answer":"The SMCJ30CA-TR is rated for 1500W peak pulse power (1.5kW) under the standard 10/1000µs waveform. This is the maximum surge energy it can dissipate in a single pulse before the junction temperature exceeds the safe limit."},{"question":"Is SMCJ30CA-TR bidirectional?","answer":"Yes, it is a single bidirectional channel, meaning one device clamps both positive and negative transients. This is useful for AC signal lines, RS-485 pairs, or any rail where the surge polarity is unknown."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/SMCJ30CA-TR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/SMCJ30CA-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}}