{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5KE22AHE3/51","brand":"Vishay General Semiconductor - Diodes Division","brandSlug":"vishay-general-semiconductor-diodes-division","productSlug":"1.5KE22AHE3-51","canonicalUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5KE22AHE3-51","factsUrl":"https://icboms.com/api/mcp/products/1.5KE22AHE3%2F51","rawCanonicalId":null},"summary":{"shortDescription":"Vishay General Semiconductor, TransZorb® Automotive AEC-Q101 TVS, 1.5KE22AHE3/51, 1500W, 18.8V standoff, 30.6V clamp, DO-201AA axial, bulk.","salesMarkdown":"## What this TVS protects and where it lived The 1.5KE22AHE3/51 is a 1500 W peak-pulse-power TransZorb® TVS diode from Vishay, part of the automotive-grade AEC-Q101 series. It clamps transients at 30.6 V max when hit with a 49 A 10/1000 µs pulse, and its 18.8 V reverse standoff means it sits across a 12 V or 15 V rail without leaking until a surge arrives. The DO-201AA axial-lead package is a through-hole workhorse — the same footprint as a 1N5400 rectifier, so it drops into existing board layouts without a pad spin. ## Why the obsolete status matters for your BOM If you are repairing an automotive ECU or a power supply that originally used this TVS, the 1.5KE22AHE3/51 is still findable on the spot market. For a new design, look at Vishay's current 1.5KE series (non-automotive) or the automotive-grade SAxxA family — but confirm the clamping voltage and package match before swapping. ## Clamping numbers that decide fit The breakdown voltage range starts at 20.9 V min — that is the point where the diode begins conducting. The clamping ceiling is 30.6 V at the rated 49 A pulse, so the protected rail must survive a 30.6 V transient without damaging downstream silicon. Power line protection is marked No — this is a unidirectional TVS for DC rails, not for AC mains. The single-channel unidirectional construction means it clamps only one polarity; reverse-voltage protection requires an additional series diode or a bidirectional part.","metaTitle":"Vishay 1.5KE22AHE3/51 TVS Diode, 1500W, DO-201AA, Obsolete","metaDescription":"Obsolete Vishay 1.5KE22AHE3/51 1500W TVS, 18.8V standoff, 30.6V clamp, AEC-Q101. Sourced to order against RFQ via independent channels.","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":"1.5KE22","Operating Temperature":"-55°C~175°C(TJ)","Power Line Protection":"No","Capacitance @ Frequency":"-","Supplier Device Package":"1.5KE","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"20.9V","Voltage - Clamping (Max) @ Ipp":"30.6V","Voltage - Reverse Standoff (Typ)":"18.8V","Current - Peak Pulse (10/1000µs)":"49A"}},"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 compliance documentation does Vishay provide for 1.5KE22AHE3/51?","answer":"The part is AEC-Q101 qualified for automotive stress and reliability. Vishay typically provides RoHS and REACH compliance data on request for this series. No UL or IEC certification is listed in the available specs."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5KE22AHE3-51","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/1.5KE22AHE3-51 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}}