{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5KE18CAHE3/51","brand":"Vishay General Semiconductor - Diodes Division","brandSlug":"vishay-general-semiconductor-diodes-division","productSlug":"1.5KE18CAHE3-51","canonicalUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5KE18CAHE3-51","factsUrl":"https://icboms.com/api/mcp/products/1.5KE18CAHE3%2F51","rawCanonicalId":null},"summary":{"shortDescription":"Vishay General Semiconductor TransZorb® TVS, Automotive Grade, Bidirectional, 1500W Peak Pulse, 15.3V Standoff, DO-201AA Axial, Bulk.","salesMarkdown":"## What the AEC-Q101 grade means for the BOM The 1.5KE18CAHE3/51 is an automotive-grade TransZorb TVS diode from Vishay, qualified to AEC-Q101 — the stress and reliability screening that certifies it for under-hood and chassis-mounted electronics where temperature swings and transients are routine. ## Obsolete — sourcing path for sustainment Vishay has marked the 1.5KE18CAHE3/51 as obsolete. For a sustainment program that already has this part in the BOM, the DO-201AA axial package and 15.3 V reverse standoff voltage define the form-fit-function envelope — any substitute must match the 1.5 kW pulse capability and the bidirectional clamping characteristic. ## Key ratings and the fit decision The breakdown voltage range starts at 17.1 V minimum, so the diode begins conducting before the protected rail exceeds the typical 24 V load-dump ceiling in automotive 12 V systems. The single bidirectional channel handles both positive and negative transients on the same line, eliminating the need for two unidirectional devices in antiparallel.","metaTitle":"1.5KE18CAHE3/51 Vishay TVS, 1500W, Bidirectional, DO-201AA","metaDescription":"1.5KE18CAHE3/51 Vishay TransZorb TVS, 1500W peak pulse, 15.3V standoff, AEC-Q101. Obsolete — sourced to order against RFQ through independent distribution.","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®","Package":"Bulk","Applications":"-","Mounting Type":"Through Hole","Qualification":"AEC-Q101","Package / Case":"DO-201AA, DO-27, Axial","Product Status":"Obsolete","lifecycle_stage":"unknown","Power - Peak Pulse":"1500W (1.5kW)","Base Product Number":"1.5KE18","Operating Temperature":"-55°C ~ 175°C (TJ)","Power Line Protection":"No","Bidirectional Channels":"1","Capacitance @ Frequency":"-","Supplier Device Package":"1.5KE","Voltage - Breakdown (Min)":"17.1V","Voltage - Clamping (Max) @ Ipp":"25.2V","Voltage - Reverse Standoff (Typ)":"15.3V","Current - Peak Pulse (10/1000µs)":"59.5A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.5346","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/1d9056c1671be5ed4e8275742e36e8d5.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to 1.5KE18CAHE3/51?","answer":"Any replacement must match the DO-201AA axial package, 15.3 V reverse standoff, 1500 W peak pulse power, and bidirectional configuration — confirm fit against the original Vishay datasheet before substituting."},{"question":"What compliance documentation does Vishay provide for 1.5KE18CAHE3/51?","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/1.5KE18CAHE3-51","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/1.5KE18CAHE3-51 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}}