{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5KE8.2CAHE3/51","brand":"Vishay General Semiconductor - Diodes Division","brandSlug":"vishay-general-semiconductor-diodes-division","productSlug":"1.5KE8.2CAHE3-51","canonicalUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5KE8.2CAHE3-51","factsUrl":"https://icboms.com/api/mcp/products/1.5KE8.2CAHE3%2F51","rawCanonicalId":null},"summary":{"shortDescription":"Vishay General Semiconductor - Diodes Division TransZorb® Automotive TVS Diode, 1.5KE8.2CAHE3/51, Bidirectional, 1500W Peak Pulse, 7.02V Standoff, DO-201AA Axial, Bulk.","salesMarkdown":"## 1500W bidirectional Zener TVS for automotive bus protection The 1.5KE8.2CAHE3/51: AEC-Q101 qualification and the -55 to +175 °C junction range put this part in the under-hood temperature band — it survives the thermal cycling and surge environment of an engine bay or transmission controller. ## Clamping window and breakdown margins Breakdown starts at 7.79 V min, giving roughly 0.8 V of headroom before the diode begins conducting — tight enough to protect a 5 V-tolerant IC without nuisance triggering on supply ripple. Clamping at 12.1 V max means a 24 V automotive battery line hit by a load-dump or inductive kick sees the TVS fold the spike back to 12.1 V — well within the 30 V abs-max of most 12 V-rated ECU components. Bidirectional construction lets a single device protect a differential pair or a signal line that swings both sides of ground — no need for two back-to-back unidirectional parts. ## Sourcing an obsolete automotive-grade TVS The DO-201AA axial package is a standard footprint, so a board-level replacement with a different vendor's 1.5KE-series bidirectional TVS at the same standoff voltage is feasible — but the AEC-Q101 automotive grade must be matched for production use.","metaTitle":"Vishay 1.5KE8.2CAHE3/51 TVS Diode, 1500W, 12.1V Clamp","metaDescription":"Vishay 1.5KE8.2CAHE3/51 TransZorb® TVS, bidirectional, 1500W peak pulse, 7.02V standoff, AEC-Q101. Obsolete — sourced to order. Request a quote.","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","Grade":"Automotive","Series":"TransZorb®","Packaging":"Bulk","Part Status":"Obsolete","Applications":"-","Mounting Type":"Through Hole","Qualification":"AEC-Q101","Package / Case":"DO-201AA, DO-27, Axial","lifecycle_stage":"unknown","Power - Peak Pulse":"1500W (1.5kW)","Base Product Number":"1.5KE8.2","Operating Temperature":"-55°C ~ 175°C (TJ)","Power Line Protection":"No","Bidirectional Channels":"1","Capacitance @ Frequency":"-","Supplier Device Package":"1.5KE","Voltage - Breakdown (Min)":"7.79V","Voltage - Clamping (Max) @ Ipp":"12.1V","Voltage - Reverse Standoff (Typ)":"7.02V","Current - Peak Pulse (10/1000µs)":"124A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.5346","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/b6470e7c23af28f3f376ae45aee8e9ef.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to 1.5KE8.2CAHE3/51?","answer":"There is no official cross-reference from Vishay. A functionally equivalent bidirectional 1.5KE TVS with a 7.02 V standoff voltage in the DO-201AA package would fit the same board footprint, but the AEC-Q101 qualification must be verified on any replacement for automotive applications."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5KE8.2CAHE3-51","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/1.5KE8.2CAHE3-51 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}}