{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5KE540A-E3/54","brand":"Vishay General Semiconductor - Diodes Division","brandSlug":"vishay-general-semiconductor-diodes-division","productSlug":"1.5KE540A-E3-54","canonicalUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5KE540A-E3-54","factsUrl":"https://icboms.com/api/mcp/products/1.5KE540A-E3%2F54","rawCanonicalId":null},"summary":{"shortDescription":"Vishay General Semiconductor - Diodes Division TransZorb® Zener TVS diode, 1.5KE540A-/54, 1500 W peak pulse, 459 V standoff, 740 V clamping, DO-201AA axial, unidirectional.","salesMarkdown":"## Transient suppressor for 459 V DC rails The 1.5KE540A-E3/54: Its 459 V reverse standoff voltage means it sits across a DC bus up to that level without conducting leakage, then clamps transients at 740 V max to protect downstream semiconductors. The 513 V minimum breakdown voltage gives a 54 V window between standoff and clamping onset — enough margin for a regulated 459 V rail with normal ripple, while still catching surges before they reach the 740 V clamp ceiling. ## Peak current and thermal envelope At the 740 V clamping voltage, the device handles 2.03 A of peak pulse current (Ipp) for the standard 10/1000 µs transient. The 1500 W rating is the product of clamp voltage and peak current — a common benchmark for comparing TVS diodes in this power class. Operating temperature spans -55 to 175 °C junction, covering military and industrial temperature grades. The wide range suits deployment in outdoor telecom rectifiers, motor drive DC links, and power supplies where ambient heat and self-heating both factor into derating. Supplied in the DO-201AA / DO-27 axial-leaded package, a through-hole format with a 1.5KE supplier device code. The leaded body is compatible with existing board layouts using this footprint — no pad redesign needed for a drop-in replacement in a TVS socket position. The reel format suits automated insertion; the cut tape works for prototype or low-volume builds. ## Active lifecycle — no obsolescence watch needed The base product number is 1.5KE540; the -/54 suffix denotes the lead-free / RoHS-compliant finish and the specific packaging code. No pin-compatible second source is recorded in the Vishay TransZorb family for this exact voltage and power class.","metaTitle":"1.5KE540A-E3/54 Vishay TransZorb TVS, 1.5 kW, 459 V","metaDescription":"1.5KE540A-E3/54 Vishay TransZorb Zener TVS diode, 1500 W peak pulse, 459 V standoff, 740 V clamping. Active production. Sourced to order.","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":"TransZorb®","Package":"Tape & Reel (TR); Cut Tape (CT)","Applications":"General Purpose","Mounting Type":"Through Hole","Package / Case":"DO-201AA, DO-27, Axial","Product Status":"Active","lifecycle_stage":"unknown","Power - Peak Pulse":"1500W (1.5kW)","Base Product Number":"1.5KE540","Operating Temperature":"-55°C~175°C(TJ)","Power Line Protection":"No","Capacitance @ Frequency":"-","Supplier Device Package":"1.5KE","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":"$0.6164","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/cbd949ebcf4c95d5b4ea8fdecf87536f.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What does the 459 V standoff rating mean for my circuit?","answer":"The 459 V reverse standoff voltage is the maximum DC or peak-AC voltage the TVS can block without conducting significant leakage. Your protected rail must stay at or below this level under normal operation; the device then clamps transients above 513 V breakdown up to 740 V max."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5KE540A-E3-54","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/1.5KE540A-E3-54 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}}