{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5KE30AHE3/51","brand":"Vishay General Semiconductor - Diodes Division","brandSlug":"vishay-general-semiconductor-diodes-division","productSlug":"1.5KE30AHE3-51","canonicalUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5KE30AHE3-51","factsUrl":"https://icboms.com/api/mcp/products/1.5KE30AHE3%2F51","rawCanonicalId":null},"summary":{"shortDescription":"Vishay General Semiconductor - Diodes Division, TransZorb® Automotive series, TVS diode, 1.5KE30AHE3/51, 1500W peak pulse, 25.6V reverse standoff, DO-201AA axial, AEC-Q101.","salesMarkdown":"## Automotive-grade TVS with a 1500 W pulse rating The 1.5KE30AHE3/51 is a unidirectional TransZorb® TVS diode from Vishay's Automotive series, qualified to AEC-Q101 for use in under-hood and chassis-domain electronics. The DO-201AA (DO-27) axial-lead package is a through-hole form factor common in power-supply input stages and junction-box protection modules. ## Clamping voltages and breakdown margin Breakdown occurs at a minimum of 28.5 V, giving a 2.9 V margin above the 25.6 V standoff — this ensures the diode stays off during normal battery voltage swings but fires before the downstream silicon sees damaging overvoltage. The 36.2 A peak pulse current capability (10/1000 µs) handles the energy from a typical alternator load-dump event on a 24 V system. No power-line protection (bidirectional) is offered — this is a unidirectional clamp intended for DC rails where the cathode is tied to the positive bus and the anode to ground. The single-channel layout matches a single supply-rail protection zone. ## Obsolete — sourcing through independent channels Vishay has marked the 1.5KE30AHE3/51 as obsolete. No pin-compatible direct replacement from Vishay's current TransZorb portfolio is documented — a board-level substitution would require validating the DO-201AA footprint and the 1500 W pulse rating against an active alternative.","metaTitle":"1.5KE30AHE3/51 TVS Diode, 1500W, 25.6V Standoff, DO-201AA","metaDescription":"Vishay 1.5KE30AHE3/51 TransZorb TVS, AEC-Q101, 1500W peak pulse, 25.6V reverse standoff, obsolete. 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":"Automotive, AEC-Q101, TransZorb®","Package":"Bulk","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":"1.5KE30","Operating Temperature":"-55°C~175°C(TJ)","Power Line Protection":"No","Capacitance @ Frequency":"-","Supplier Device Package":"1.5KE","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"28.5V","Voltage - Clamping (Max) @ Ipp":"41.4V","Voltage - Reverse Standoff (Typ)":"25.6V","Current - Peak Pulse (10/1000µs)":"36.2A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.5346","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/55e3e40e24fd2c3f96443c3e231bf459.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to the 1.5KE30AHE3/51?","answer":"Any replacement would need to match the DO-201AA axial package, 1500 W peak pulse rating, 25.6 V reverse standoff, and AEC-Q101 qualification — a parametric search against active Vishay or competitor parts is recommended at RFQ."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5KE30AHE3-51","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/1.5KE30AHE3-51 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}}