{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5KE91CA-E3/54","brand":"Vishay General Semiconductor - Diodes Division","brandSlug":"vishay-general-semiconductor-diodes-division","productSlug":"1.5KE91CA-E3-54","canonicalUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5KE91CA-E3-54","factsUrl":"https://icboms.com/api/mcp/products/1.5KE91CA-E3%2F54","rawCanonicalId":null},"summary":{"shortDescription":"Vishay General Semiconductor - Diodes Division TransZorb® TVS, Type Zener, Bidirectional, 1500W (1.5kW) Peak Pulse, 77.8V Standoff, DO-201AA Axial, 1.5KE91CA-/54.","salesMarkdown":"## TransZorb TVS, 1500 W bidirectional clamp The 1.5KE91CA-E3/54: This is a Zener-type TVS in the DO-201AA (DO-27) axial-lead package, through-hole mounted, intended for general-purpose transient suppression on DC rails and signal lines that see bidirectional overvoltage events. ## Clamp voltage and breakdown margin The minimum breakdown voltage is 86.5 V, giving a 8.7 V margin above the 77.8 V standoff — the diode stays high-impedance under normal rail voltage and only conducts when the transient pushes past the breakdown knee. At the rated 12 A peak pulse current the clamp holds at 125 V maximum, which means a 48 V rail riding at 77.8 V sees the transient clipped to 125 V before the downstream silicon reaches its abs-max rating. ## Sourcing and lifecycle posture For a second-source hedge, parametric equivalents in the same DO-201AA package with matching standoff and peak power can be evaluated at quote time.","metaTitle":"1.5KE91CA-E3/54 Vishay TVS, 1500W Bidirectional, 77.8V","metaDescription":"Vishay 1.5KE91CA-E3/54 TransZorb TVS, 1500W peak pulse, bidirectional, 77.8V standoff, DO-201AA. Active production, sourced per RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"Vishay General Semiconductor - Diodes Division","Type":"Zener","Series":"TransZorb®","Package":"Tape & Reel (TR); Cut Tape (CT)","Applications":"General Purpose","Mounting Type":"Through Hole","Package / Case":"DO-201AA, DO-27, Axial","Product Status":"Active","lifecycle_stage":"unknown","Power - Peak Pulse":"1500W (1.5kW)","Base Product Number":"1.5KE91","Operating Temperature":"-55°C~175°C(TJ)","Power Line Protection":"No","Bidirectional Channels":"1","Capacitance @ Frequency":"-","Supplier Device Package":"1.5KE","Voltage - Breakdown (Min)":"86.5V","Voltage - Clamping (Max) @ Ipp":"125V","Voltage - Reverse Standoff (Typ)":"77.8V","Current - Peak Pulse (10/1000µs)":"12A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.3531","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/cbd949ebcf4c95d5b4ea8fdecf87536f.pdf","sourceUrl":null},"ai":{"faq":[{"question":"How do I get current pricing and availability for 1.5KE91CA-/54?","answer":"Submit an RFQ with your target quantity. Pricing and lead time are confirmed at quote time through our sourcing desk — the part is actively produced, so lead times follow standard Vishay distribution cycles."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5KE91CA-E3-54","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/1.5KE91CA-E3-54 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}