{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5KE18-E3/73","brand":"Vishay General Semiconductor - Diodes Division","brandSlug":"vishay-general-semiconductor-diodes-division","productSlug":"1.5KE18-E3-73","canonicalUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5KE18-E3-73","factsUrl":"https://icboms.com/api/mcp/products/1.5KE18-E3%2F73","rawCanonicalId":null},"summary":{"shortDescription":"Vishay General Semiconductor - Diodes Division TransZorb® Zener TVS, 1.5KE18-/73, 1500W peak pulse, 26.5V clamp, 14.5V standoff, DO-201AA axial, through hole.","salesMarkdown":"## EOL signal — last-time-buy window on a 1.5 kW axial TVS The 1.5KE18-E3/73: The Vishay 1.5KE18-/73 is marked Obsolete on the manufacturer's lifecycle record. That means the production line has been shut — no further factory orders are accepted. The only supply channel is independent distribution holding remaining date-code lots, verified for authenticity and tested per the original datasheet limits. ## Clamping parametrics and the protection envelope This is a 1500 W (1.5 kW) peak pulse power Zener TVS in the TransZorb® series, rated for a 10/1000 µs waveform. The reverse standoff voltage is 14.5 V — the rail it protects should never exceed this in normal operation. Breakdown triggers at a minimum of 16.2 V, and the clamping voltage at full peak pulse current (56.6 A,) is 26.5 V max. That 26.5 V ceiling is what the downstream silicon sees during the surge; if the protected device's abs-max rating sits below that, the TVS will not save it. Mounted through-hole in a DO-201AA (DO-27) axial-lead package. The lead spacing and body diameter match the standard 1.5KE footprint — a drop-in replacement for any 1.5KE-series part with the same breakdown voltage.","metaTitle":"1.5KE18-E3/73 TVS Zener, 1500W, 26.5V Clamp, DO-201AA","metaDescription":"Vishay 1.5KE18-E3/73 TransZorb® Zener TVS, 1500W peak pulse, 26.5V clamp, DO-201AA axial. Obsolete — sourced 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":"TransZorb®","Package":"Tape & Box (TB)","Applications":"General Purpose","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":"1.5KE18","Operating Temperature":"-55°C~175°C(TJ)","Power Line Protection":"No","Capacitance @ Frequency":"-","Supplier Device Package":"1.5KE","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"16.2V","Voltage - Clamping (Max) @ Ipp":"26.5V","Voltage - Reverse Standoff (Typ)":"14.5V","Current - Peak Pulse (10/1000µs)":"56.6A"}},"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 1.5KE18-/73 used for?","answer":"It is a Zener TVS diode in the TransZorb® series, used for transient voltage suppression on 14.5 V nominal rails. The 1.5 kW peak pulse rating handles surge events like inductive load dumps or lightning-induced transients in general-purpose circuit protection applications."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5KE18-E3-73","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/1.5KE18-E3-73 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}}