{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5KE540A-E3/73","brand":"Vishay General Semiconductor - Diodes Division","brandSlug":"vishay-general-semiconductor-diodes-division","productSlug":"1.5KE540A-E3-73","canonicalUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5KE540A-E3-73","factsUrl":"https://icboms.com/api/mcp/products/1.5KE540A-E3%2F73","rawCanonicalId":null},"summary":{"shortDescription":"Vishay General Semiconductor - Diodes Division TransZorb® Zener TVS, 1.5KE540A-/73, 1500W peak pulse, 459V standoff, 740V clamping, DO-201AA axial, through hole.","salesMarkdown":"## 1500 W peak pulse in a DO-201AA axial package The 1.5KE540A-E3/73: With a 459 V reverse standoff voltage and a clamping ceiling of 740 V at 2.03 A peak pulse current, this part protects high-voltage DC rails and AC line-side circuits in industrial power supplies and telecom rectifiers. The 513 V minimum breakdown voltage gives a guard band above the 459 V working voltage, so the diode stays transparent under normal line conditions and only conducts when a transient pushes the rail past the avalanche threshold. ## Through-hole axial package for high-reliability insertion Housed in a DO-201AA (DO-27) axial-lead package, the 1.5KE540A-/73 mounts through-hole on a PCB or terminal block. The axial body and 0.042-inch diameter leads handle the thermal cycling of repeated surge events — the lead-to-body joint is the mechanical weak point in a wave-solder process, so a pre-bend radius of at least one lead diameter keeps the glass seal intact. The Tape & Box (TB) packaging option suits hand-insertion or semi-automated assembly lines where the axial leads need to be formed and cut to length before insertion. No power line protection feature is claimed, so this is a pure transient suppressor — not a crowbar or a filter. ## Active lifecycle and sourcing posture The 1.5KE540A-/73 carries an Active product status from Vishay, meaning the die and assembly lines are still running.","metaTitle":"Vishay 1.5KE540A-E3/73 TransZorb TVS, 1500W, 459V Standoff","metaDescription":"Vishay 1.5KE540A-E3/73 TransZorb Zener TVS diode, 1500W peak pulse power, 459V reverse standoff, 740V clamping. Active lifecycle. 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 & Box (TB)","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":"$0.5136","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/cbd949ebcf4c95d5b4ea8fdecf87536f.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What package does the 1.5KE540A-/73 come in?","answer":"It is supplied in a DO-201AA (DO-27) axial-lead through-hole package. The packaging format is Tape & Box (TB)."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5KE540A-E3-73","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-E3-73 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}}