{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5KE51HE3/54","brand":"Vishay General Semiconductor - Diodes Division","brandSlug":"vishay-general-semiconductor-diodes-division","productSlug":"1.5KE51HE3-54","canonicalUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5KE51HE3-54","factsUrl":"https://icboms.com/api/mcp/products/1.5KE51HE3%2F54","rawCanonicalId":null},"summary":{"shortDescription":"Vishay General Semiconductor, Automotive AEC-Q101 TransZorb series, Zener TVS diode, 1.5KE51HE3/54, 1500W peak pulse, 41.3V standoff, DO-201AA axial through-hole.","salesMarkdown":"Vishay has marked the 1.5KE51HE3/54 as obsolete. Sourcing this part now goes through independent distribution channels — surplus, new-old-stock, or broker inventory — with availability and pricing confirmed at the time of an RFQ. The last-time-buy window has closed. Any units in the channel carry their original date codes, so lot traceability and authenticity screening are the buyer's due diligence. A functional replacement requires a board-level review of the DO-201AA footprint and the 41.3 V standoff / 73.5 V clamping profile. ## AEC-Q101 qualification and the TransZorb series This part belongs to Vishay's TransZorb series with an AEC-Q101 automotive qualification — it has passed the stress tests and reliability screening required for under-hood and chassis-mounted electronics in passenger and commercial vehicles. ## Voltage thresholds and clamping performance The reverse standoff voltage is 41.3 V — the TVS draws negligible leakage below this level. These three numbers define the protection window: the rail being protected must tolerate the clamp voltage without damage, and the normal operating voltage must stay below the standoff. ## Through-hole package and board fit Supplied in the DO-201AA axial-lead package (also known as DO-27), this is a through-hole device. The lead spacing and body diameter match the industry-standard 1.5KE footprint, so a replacement TVS in the same package style fits the existing PCB holes without layout changes. The unidirectional configuration protects one polarity rail. For bidirectional or AC-line applications, two devices back-to-back or a single bidirectional part would be needed.","metaTitle":"Vishay 1.5KE51HE3/54 TVS, 1500W, AEC-Q101, DO-201AA","metaDescription":"Vishay 1.5KE51HE3/54 Zener TVS diode, 1500W peak pulse, 41.3V 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","Series":"Automotive, AEC-Q101, TransZorb®","Package":"Tape & Reel (TR)","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":"1.5KE51","Operating Temperature":"-55°C~175°C(TJ)","Power Line Protection":"No","Capacitance @ Frequency":"-","Supplier Device Package":"1.5KE","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"45.9V","Voltage - Clamping (Max) @ Ipp":"73.5V","Voltage - Reverse Standoff (Typ)":"41.3V","Current - Peak Pulse (10/1000µs)":"20.4A"}},"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 1.5KE51HE3/54?","answer":"A functional replacement in the same DO-201AA package with a 41.3 V standoff, 73.5 V clamp, and 1500 W peak pulse rating would fit the same PCB footprint, but the clamping curve and breakdown tolerance must be verified against the original design margin."},{"question":"What compliance documentation does Vishay provide for the 1.5KE51HE3/54?","answer":"The part carries AEC-Q101 automotive qualification. RoHS and REACH compliance status is standard for Vishay's TransZorb series; the specific declaration is provided with the shipment. No UL or IEC certification is listed in the available record."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5KE51HE3-54","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/1.5KE51HE3-54 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}}