{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5KE91C-E3/54","brand":"Vishay General Semiconductor - Diodes Division","brandSlug":"vishay-general-semiconductor-diodes-division","productSlug":"1.5KE91C-E3-54","canonicalUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5KE91C-E3-54","factsUrl":"https://icboms.com/api/mcp/products/1.5KE91C-E3%2F54","rawCanonicalId":null},"summary":{"shortDescription":"Vishay General Semiconductor TransZorb® bidirectional TVS diode, 1.5KE91C-/54, 1500W peak pulse power, 73.7V standoff, 131V clamping, DO-201AA axial-lead package.","salesMarkdown":"## 1500W TransZorb — what the ratings mean for the BOM The 1.5KE91C-E3/54: The reverse standoff voltage of 73.7 V means the diode draws negligible leakage below that rail level; the breakdown window starts at 81.9 V minimum, and clamping is specified at 131 V maximum at the 11.5 A peak pulse current — so a 72 V bus sees protection before the downstream components exceed their voltage rating. A single bidirectional channel handles both positive and negative transients, saving board space compared to back-to-back unidirectional diodes in the same DO-201AA axial footprint. ## Obsolete — sourcing through independent channels No pin-compatible direct replacement from Vishay is documented — a functional equivalent requires comparing the 73.7 V standoff, 131 V clamp, and 1500 W pulse rating against active TVS diodes in the same DO-201AA package.","metaTitle":"1.5KE91C-E3/54 Vishay TransZorb 1500W Bidirectional TVS","metaDescription":"Vishay 1.5KE91C-E3/54 TransZorb bidirectional TVS diode, 1500W peak pulse, 73.7V standoff, DO-201AA. 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":"TransZorb®","Package":"Tape & Reel (TR)","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":"1.5KE91","Operating Temperature":"-55°C~175°C(TJ)","Power Line Protection":"No","Bidirectional Channels":"1","Capacitance @ Frequency":"-","Supplier Device Package":"1.5KE","Voltage - Breakdown (Min)":"81.9V","Voltage - Clamping (Max) @ Ipp":"131V","Voltage - Reverse Standoff (Typ)":"73.7V","Current - Peak Pulse (10/1000µs)":"11.5A"}},"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 closest alternative to 1.5KE91C-/54?","answer":"No official pin-compatible successor is documented by Vishay. A functional replacement must match the 73.7 V reverse standoff, 131 V clamping at 11.5 A, 1500 W peak pulse power, bidirectional configuration, and DO-201AA axial package. Cross-referencing against active TVS diodes with the same -55°C to 175°C temperature range is recommended."},{"question":"What compliance documentation is available for 1.5KE91C-/54?","answer":"As an obsolete part sourced through independent channels, documentation availability varies by lot — confirm at RFQ."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5KE91C-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/1.5KE91C-E3-54 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-20T14:34:45.345Z","lastPublished":"2026-07-20T14:34:45.345Z","indexable":true}}