{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5KE9.1CA-E3/51","brand":"Vishay General Semiconductor - Diodes Division","brandSlug":"vishay-general-semiconductor-diodes-division","productSlug":"1.5KE9.1CA-E3-51","canonicalUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5KE9.1CA-E3-51","factsUrl":"https://icboms.com/api/mcp/products/1.5KE9.1CA-E3%2F51","rawCanonicalId":null},"summary":{"shortDescription":"Vishay General Semiconductor TransZorb® TVS, Zener, Bidirectional, 1500W peak pulse, 7.78V standoff, 13.4V clamp, DO-201AA Axial, Bulk.","salesMarkdown":"## 1500 W bidirectional transient suppressor — Last Buy window The 1.5KE9.1CA-E3/51: The device is marked as Last Buy by Vishay, meaning the manufacturer has initiated end-of-life — orders are placed against available inventory through independent distribution channels. The 13.4 V maximum clamping voltage is the peak voltage the downstream circuitry sees during a 112 A surge event — any component rated below this clamp voltage risks avalanche failure. With a 7.78 V standoff, the TVS draws negligible leakage at normal 5 V or 9 V rails, but a 12 V rail sits above the standoff and would keep the diode in continuous breakdown — this part is not suited for 12 V supply protection. ## DO-201AA axial package — board integration and thermal path Housed in a DO-201AA (DO-27) axial-lead through-hole package, the 1.5KE series body transfers heat through the lead wires into the PCB copper — adequate pad area on both sides of the board reduces thermal resistance during repetitive surge events. The operating junction temperature range spans -55°C to 175°C, covering industrial enclosures and automotive under-hood environments where ambient heat adds to self-heating during clamping. ## Sourcing reality for a Last-Buy part No official pin-compatible successor is listed on the manufacturer record. For a BOM line already qualified to this axial TVS, securing the remaining lifecycle inventory now avoids a last-minute board respin to a surface-mount alternative.","metaTitle":"1.5KE9.1CA-E3/51 Vishay TVS, 1500W Bidirectional, DO-201AA","metaDescription":"Vishay 1.5KE9.1CA-E3/51 TransZorb TVS, 1500W peak pulse, 7.78V standoff, 13.4V clamp, bidirectional, DO-201AA axial. Last Buy lifecycle — sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Last Buy","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"Vishay General Semiconductor - Diodes Division","Type":"Zener","Series":"TransZorb®","Package":"Bulk","Applications":"General Purpose","Mounting Type":"Through Hole","Package / Case":"DO-201AA, DO-27, Axial","Product Status":"Last Time Buy","lifecycle_stage":"unknown","Power - Peak Pulse":"1500W (1.5kW)","Base Product Number":"1.5KE9.1","Operating Temperature":"-55°C~175°C(TJ)","Power Line Protection":"No","Bidirectional Channels":"1","Capacitance @ Frequency":"-","Supplier Device Package":"1.5KE","Voltage - Breakdown (Min)":"8.65V","Voltage - Clamping (Max) @ Ipp":"13.4V","Voltage - Reverse Standoff (Typ)":"7.78V","Current - Peak Pulse (10/1000µs)":"112A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.7245","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/cbd949ebcf4c95d5b4ea8fdecf87536f.pdf","sourceUrl":null},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5KE9.1CA-E3-51","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/1.5KE9.1CA-E3-51 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}}