{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5SMC540A-M3/9AT","brand":"Vishay General Semiconductor - Diodes Division","brandSlug":"vishay-general-semiconductor-diodes-division","productSlug":"1.5SMC540A-M3-9AT","canonicalUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5SMC540A-M3-9AT","factsUrl":"https://icboms.com/api/mcp/products/1.5SMC540A-M3%2F9AT","rawCanonicalId":null},"summary":{"shortDescription":"Vishay General Semiconductor - Diodes Division 1.5SMC, TransZorb® series Zener TVS diode, 1500W peak pulse power, 459V reverse standoff, 740V clamping, DO-214AB SMC package, Tape & Reel.","salesMarkdown":"## Transient suppression for 459V DC rails The 1.5SMC540A-M3/9AT: Its 459V reverse standoff voltage defines the maximum continuous DC rail it protects without conducting — above that, the device breaks down at a minimum of 513V and clamps transients to 740V at the rated 2.03A peak pulse current. This makes it suitable for protecting 400V-class DC buses or high-voltage telecom power feeds where the steady-state rail sits below 459V and transients need to be shunted before reaching downstream silicon. ## Package and thermal considerations for board integration The copper pad area under the cathode tab on the PCB sets the thermal resistance — a larger pad lowers RthJA and allows the device to absorb more pulse energy before reaching the 150°C limit. The part is supplied in Tape & Reel packaging, consistent with automated pick-and-place assembly for volume production.","metaTitle":"1.5SMC540A-M3/9AT Vishay TVS Diode, 1500W, 459V Standoff","metaDescription":"Vishay 1.5SMC540A-M3/9AT Zener TVS diode, 1500W peak pulse, 459V reverse standoff, DO-214AB SMC. Active production, sourced to order. Request quote.","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":"1.5SMC540","Operating Temperature":"-65°C~150°C(TJ)","Power Line Protection":"No","Capacitance @ Frequency":"-","Supplier Device Package":"DO-214AB (SMCJ)","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"513V","Voltage - Clamping (Max) @ Ipp":"740V","Voltage - Reverse Standoff (Typ)":"459V","Current - Peak Pulse (10/1000µs)":"2.03A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.5833","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/de7dd597f6fdc3f56660f78f3e5a960d.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/1.5SMC540A-M3%2F9AT/alternatives.json"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 1.5SMC540A-M3/9AT?","answer":"Submit an RFQ through this listing."},{"question":"What package does 1.5SMC540A-M3/9AT come in?","answer":"Packaging format is Tape & Reel."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5SMC540A-M3-9AT","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/1.5SMC540A-M3-9AT 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}}