{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5KE51C-E3/73","brand":"Vishay General Semiconductor - Diodes Division","brandSlug":"vishay-general-semiconductor-diodes-division","productSlug":"1.5KE51C-E3-73","canonicalUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5KE51C-E3-73","factsUrl":"https://icboms.com/api/mcp/products/1.5KE51C-E3%2F73","rawCanonicalId":null},"summary":{"shortDescription":"Vishay General Semiconductor, TransZorb® series, bidirectional Zener TVS diode, DO-201AA axial-lead package, 1500W peak pulse power, 73.5V clamping voltage, 1.5KE51C-/73.","salesMarkdown":"## 1.5 kW bidirectional Zener TVS in DO-201AA The 1.5KE51C-E3/73: It clamps transients at 73.5 V maximum while conducting 20.4 A peak pulse current, protecting downstream circuits from surges on 41.3 V nominal rails. ## Voltage ratings and protection window Reverse standoff voltage is 41.3 V typical, meaning the diode draws negligible leakage below that rail level. Breakdown occurs at a minimum of 45.9 V, and clamping is guaranteed at 73.5 V maximum at the rated peak current — a 32 V window from standoff to clamp that keeps the protected bus within safe limits during a surge. The bidirectional configuration (single channel) protects both polarities, so a single part covers positive and negative transients on AC or DC lines without needing two back-to-back unidirectional devices. ## Thermal and mechanical envelope The DO-201AA (DO-27) axial-lead package mounts through-hole, suited for point-of-use transient suppression on power entry boards or terminal blocks. ## Lifecycle status and sourcing Vishay lists the 1.5KE51C-/73 as obsolete.","metaTitle":"Vishay 1.5KE51C-E3/73 TransZorb TVS, 1.5 kW, 73.5V Clamp","metaDescription":"Vishay 1.5KE51C-E3/73 bidirectional Zener TVS diode, 1500W peak pulse, 73.5V clamping, DO-201AA. Obsolete – sourced to order per RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","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":"Obsolete","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","Bidirectional Channels":"1","Capacitance @ Frequency":"-","Supplier Device Package":"1.5KE","Voltage - Breakdown (Min)":"45.9V","Voltage - Clamping (Max) @ Ipp":"73.5V","Voltage - Reverse Standoff (Typ)":"41.3V","Current - Peak Pulse (10/1000µs)":"20.4A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/cbd949ebcf4c95d5b4ea8fdecf87536f.pdf","sourceUrl":null},"ai":{"faq":[{"question":"How can I order the 1.5KE51C-/73 or check current pricing?","answer":"Submit an RFQ for the 1.5KE51C-/73."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5KE51C-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/1.5KE51C-E3-73 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-20T14:34:45.345Z","lastPublished":"2026-07-20T14:34:45.345Z","indexable":true}}