{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5KE51CHE3/54","brand":"Vishay General Semiconductor - Diodes Division","brandSlug":"vishay-general-semiconductor-diodes-division","productSlug":"1.5KE51CHE3-54","canonicalUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5KE51CHE3-54","factsUrl":"https://icboms.com/api/mcp/products/1.5KE51CHE3%2F54","rawCanonicalId":null},"summary":{"shortDescription":"Vishay General Semiconductor - Diodes Division TransZorb®, 1.5KE51CHE3/54, Zener TVS diode, 1500 W (1.5 kW) peak pulse, bidirectional, DO-201AA / DO-27 axial, AEC-Q101 qualified.","salesMarkdown":"## Device identity and key parametrics The 1.5KE51CHE3/54: It is qualified to AEC-Q101, the automotive discrete semiconductor reliability standard, which means it meets the rigorous temperature cycling, ESD, and life-test requirements expected by tier-1 suppliers and OEMs. The axial-lead DO-201AA / DO-27 package mounts through-hole, suiting high-reliability power and signal lines where board real estate is not the constraint. Vishay has marked the 1.5KE51CHE3/54 as obsolete. This means the manufacturer no longer produces the part in volume, and no official successor part number is listed in the record. For existing BOM lines that require this exact order code, independent distribution channels remain the supply path — availability and pricing are confirmed at RFQ, with quantities sourced from surplus or last-time-buy inventory. Because the part is obsolete, any new design should migrate to a current-production bidirectional TVS in the same power class (1.5 kW, 41.3 V standoff) with AEC-Q101 qualification. The axial DO-201AA footprint is common across many manufacturers, so a pin-compatible replacement is feasible but must be verified against the clamping voltage and breakdown tolerance of this specific device. ## What the ratings mean for the BOM The 73.5 V clamp at 20.4 A peak pulse current sets the maximum voltage the protected load sees during a surge. For a 24 V automotive bus that can experience load-dump transients above 60 V, this diode catches the spike before it reaches the downstream regulator or ECU input. The 1500 W rating ensures it can absorb a single high-energy pulse without failing short — typical for ISO 7637-2 pulse 5a or 5b levels. This simplifies PCB layout and reduces component count on signal or power lines that see bipolar surges.","metaTitle":"1.5KE51CHE3/54 Zener TVS, 1.5 kW, 73.5V Clamp","metaDescription":"Vishay 1.5KE51CHE3/54 Zener TVS diode, 1.5 kW peak pulse, 73.5V clamp, AEC-Q101 qualified. 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":"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","Bidirectional Channels":"1","Capacitance @ Frequency":"-","Supplier Device Package":"1.5KE","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":"How can I source the 1.5KE51CHE3/54 for my BOM?","answer":"The 1.5KE51CHE3/54 is obsolete per the manufacturer. Quantities and lead time are confirmed at quote time."},{"question":"Is the 1.5KE51CHE3/54 AEC-Q101 qualified?","answer":"Yes, it is part of the Automotive, AEC-Q101, TransZorb® series, meaning it meets the automotive discrete semiconductor qualification standard for temperature, reliability, and PPAP documentation."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5KE51CHE3-54","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/1.5KE51CHE3-54 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}}