{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5KE51A-E3/73","brand":"Vishay General Semiconductor - Diodes Division","brandSlug":"vishay-general-semiconductor-diodes-division","productSlug":"1.5KE51A-E3-73","canonicalUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5KE51A-E3-73","factsUrl":"https://icboms.com/api/mcp/products/1.5KE51A-E3%2F73","rawCanonicalId":null},"summary":{"shortDescription":"Vishay General Semiconductor - Diodes Division TransZorb® Zener TVS diode, 1.5KE51A-/73, 1500W peak pulse, 43.6V standoff, 70.1V clamp, DO-201AA axial, through hole.","salesMarkdown":"## Protection window and pulse rating The 1.5KE51A-E3/73: The reverse standoff voltage is 43.6V, and breakdown occurs at 48.5V minimum; clamping is specified at 70.1V maximum when the peak pulse current reaches 21.4A. This means a 48V nominal rail sees the diode remain transparent below 43.6V, then begin conducting at breakdown, and clamp transient energy at 70.1V — well below the typical 80V abs-max of downstream 48V-input DC-DC converters. ## Thermal and package fit The DO-201AA axial leaded package (also known as DO-27) is a standard through-hole footprint; the lead length and board copper area directly affect the thermal impedance during repetitive surge events. For a single 10/1000µs pulse at 25°C, the 1500W rating is valid — derate linearly above 25°C per the datasheet curve.","metaTitle":"Vishay 1.5KE51A-E3/73 TransZorb TVS, 1500W, 43.6V Standoff","metaDescription":"Vishay 1.5KE51A-E3/73 TransZorb® Zener TVS diode, 1500W peak pulse, 43.6V reverse standoff, 70.1V clamp. Active production. Quoted 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":"1.5KE51","Operating Temperature":"-55°C~175°C(TJ)","Power Line Protection":"No","Capacitance @ Frequency":"-","Supplier Device Package":"1.5KE","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"48.5V","Voltage - Clamping (Max) @ Ipp":"70.1V","Voltage - Reverse Standoff (Typ)":"43.6V","Current - Peak Pulse (10/1000µs)":"21.4A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.3465","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/cbd949ebcf4c95d5b4ea8fdecf87536f.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/1.5KE51A-E3%2F73/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy the 1.5KE51A-/73 and check lead time?","answer":"The 1.5KE51A-/73 is an active Vishay part. Availability and current lead time are confirmed at quote time — submit an RFQ for your quantity."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5KE51A-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/1.5KE51A-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}}