{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5KE91CHE3/73","brand":"Vishay General Semiconductor - Diodes Division","brandSlug":"vishay-general-semiconductor-diodes-division","productSlug":"1.5KE91CHE3-73","canonicalUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5KE91CHE3-73","factsUrl":"https://icboms.com/api/mcp/products/1.5KE91CHE3%2F73","rawCanonicalId":null},"summary":{"shortDescription":"Vishay General Semiconductor - Diodes Division, Automotive AEC-Q101 TransZorb, Zener TVS, 1.5KE91CHE3/73, 1500W, 73.7V Standoff, DO-201AA Axial, Obsolete.","salesMarkdown":"## 73.7 V standoff, 131 V clamp — the protection window The 1.5KE91CHE3/73 is a 1500 W peak-pulse TVS diode from Vishay's TransZorb series, qualified to AEC-Q101 for automotive use. Its 73.7 V reverse standoff voltage means a 48 V or 60 V nominal rail stays below the leakage threshold, while the 131 V maximum clamp at 11.5 A peak pulse (10/1000 µs) limits the transient voltage the downstream silicon sees. ## AEC-Q101 and the 175 °C junction The bidirectional channel (one device protects both polarities) suits AC-coupled signal lines or power rails where the transient can swing positive or negative relative to ground. ## Obsolete — sourcing through independent channels Vishay has marked the 1.5KE91CHE3/73 as obsolete. Available through independent surplus and excess-stock channels. Quantities are lot-specific; availability and pricing are confirmed at RFQ against the BOM line.","metaTitle":"Vishay 1.5KE91CHE3/73 TVS, 1500W, 73.7V Standoff","metaDescription":"Obsolete Vishay 1.5KE91CHE3/73 TransZorb TVS, 1500W peak pulse, 73.7V standoff, AEC-Q101. Sourced to order via independent channels.","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":"Automotive, AEC-Q101, TransZorb®","Package":"Tape & Box (TB)","Applications":"Automotive","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":"What is the closest pin-compatible alternative to the 1.5KE91CHE3/73?","answer":"A functionally equivalent TVS with the same DO-201AA package and 73.7 V standoff would need to be evaluated against the BOM's clamp voltage and peak pulse current requirements."},{"question":"What compliance documentation does Vishay provide for the 1.5KE91CHE3/73?","answer":"The part carries AEC-Q101 automotive qualification."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5KE91CHE3-73","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/1.5KE91CHE3-73 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}}