{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5KE91C-E3/73","brand":"Vishay General Semiconductor - Diodes Division","brandSlug":"vishay-general-semiconductor-diodes-division","productSlug":"1.5KE91C-E3-73","canonicalUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5KE91C-E3-73","factsUrl":"https://icboms.com/api/mcp/products/1.5KE91C-E3%2F73","rawCanonicalId":null},"summary":{"shortDescription":"Vishay General Semiconductor - Diodes Division TransZorb® TVS, Type Zener, 1.5KE91C-/73, 1500W, 73.7V Reverse Standoff, 131V Clamping, Bidirectional, DO-201AA Axial, Tape & Box.","salesMarkdown":"## Obsolete — sourcing through independent channels The 1.5KE91C-E3/73: The 1.5KE91C-/73 is officially obsolete per Vishay's lifecycle status. ## What the 1500 W rating means for your protection design The 73.7 V reverse standoff voltage means it sits across a 72 V or 60 V rail without conducting in normal operation — it only starts clamping when the transient exceeds the minimum breakdown of 81.9 V. At the full 11.5 A peak pulse current, the voltage is clamped to 131 V max, protecting downstream semiconductors rated for that ceiling. ## Bidirectional — one device for both polarities With a single bidirectional channel, this TVS clamps transients of either polarity — useful on AC signal lines or DC rails where the return path can swing negative. The DO-201AA (DO-27) axial-lead through-hole package mounts into a standard 0.100-inch pitch hole pattern; the junction temperature range spans -55°C to 175°C, covering industrial and telecom environments.","metaTitle":"1.5KE91C-E3/73 Vishay TVS, 1500W, 73.7V Standoff, DO-201AA","metaDescription":"Obsolete Vishay 1.5KE91C-E3/73 TransZorb TVS, 1500W peak pulse, 73.7V reverse standoff, bidirectional, DO-201AA. Sourced to order against 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":"1.5KE91","Operating Temperature":"-55°C~175°C(TJ)","Power Line Protection":"No","Bidirectional Channels":"1","Capacitance @ Frequency":"-","Supplier Device Package":"1.5KE","Voltage - Breakdown (Min)":"81.9V","Voltage - Clamping (Max) @ Ipp":"131V","Voltage - Reverse Standoff (Typ)":"73.7V","Current - Peak Pulse (10/1000µs)":"11.5A"}},"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 1.5KE91C-/73 or check stock?","answer":"Submit an RFQ for your target quantity."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5KE91C-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/1.5KE91C-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}}