{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5SMC33CA-E3/9AT","brand":"Vishay General Semiconductor - Diodes Division","brandSlug":"vishay-general-semiconductor-diodes-division","productSlug":"1.5SMC33CA-E3-9AT","canonicalUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5SMC33CA-E3-9AT","factsUrl":"https://icboms.com/api/mcp/products/1.5SMC33CA-E3%2F9AT","rawCanonicalId":null},"summary":{"shortDescription":"Vishay General Semiconductor - Diodes Division 1.5SMC, TransZorb® series, bidirectional TVS Zener diode, 1500W peak pulse, 28.2V reverse standoff, DO-214AB (SMC) package, Tape & Reel.","salesMarkdown":"The 1.5SMC33CA-E3/9AT: At the full 32.8A peak pulse current, the voltage clamps at 45.7V maximum, so downstream silicon rated for 50V or higher sees a safe clamped waveform. ## Clamping voltage and transient protection margin The 45.7V maximum clamping voltage at Ipp sets the upper bound of the protected waveform. For a 24V rail with 20% tolerance (28.8V max), the 28.2V standoff provides 2.4V of headroom before the diode begins to avalanche. The bidirectional channel means the same device clamps both positive and negative transients symmetrically — useful on AC signal lines or DC rails subject to reverse polarity events. At 150°C junction, the peak pulse power derates linearly — the 1500W rating holds at 25°C, but at 125°C ambient the derating factor typically reduces available power to about 60% of the 25°C figure. For a design that must survive a 10/1000µs surge at 85°C ambient, the derated capability still exceeds 900W, leaving margin for most secondary lightning and inductive-load transients. ## Package and board-fit for the DO-214AB footprint The supplier device package is designated DO-214AB (SMCJ), and the tape-and-reel format (/9AT suffix) indicates 850 units per 13-inch reel. The copper pad area under the package body should match the recommended land pattern in Vishay's application note — a 4.5 mm × 4.0 mm pad per terminal with a 2.0 mm gap between them keeps the thermal impedance low enough to handle repetitive pulse trains without exceeding the 150°C junction limit.","metaTitle":"1.5SMC33CA-E3/9AT Vishay TVS, 1.5kW, 28.2V Standoff","metaDescription":"Vishay 1.5SMC33CA-E3/9AT bidirectional TVS diode, 1500W peak pulse, 28.2V reverse standoff, DO-214AB (SMC). Active production, sourced per RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"Vishay General Semiconductor - Diodes Division","Type":"Zener","Series":"1.5SMC, TransZorb®","Package":"Tape & Reel (TR)","Applications":"General Purpose","Mounting Type":"Surface Mount","Package / Case":"DO-214AB, SMC","Product Status":"Active","lifecycle_stage":"unknown","Power - Peak Pulse":"1500W (1.5kW)","Base Product Number":"1.5SMC33","Operating Temperature":"-65°C~150°C(TJ)","Power Line Protection":"No","Bidirectional Channels":"1","Capacitance @ Frequency":"-","Supplier Device Package":"DO-214AB (SMCJ)","Voltage - Breakdown (Min)":"31.4V","Voltage - Clamping (Max) @ Ipp":"45.7V","Voltage - Reverse Standoff (Typ)":"28.2V","Current - Peak Pulse (10/1000µs)":"32.8A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.2478","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/de7dd597f6fdc3f56660f78f3e5a960d.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/1.5SMC33CA-E3%2F9AT/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5SMC33CA-E3-9AT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/vishay-general-semiconductor-diodes-division/1.5SMC33CA-E3-9AT 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}}