{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5KE91CA-E3/73","brand":"Vishay General Semiconductor - Diodes Division","brandSlug":"vishay-general-semiconductor-diodes-division","productSlug":"1.5KE91CA-E3-73","canonicalUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5KE91CA-E3-73","factsUrl":"https://icboms.com/api/mcp/products/1.5KE91CA-E3%2F73","rawCanonicalId":null},"summary":{"shortDescription":"Vishay General Semiconductor - Diodes Division TransZorb® bidirectional TVS diode, 1.5KE91CA-/73, 1500W peak pulse, 77.8V standoff, 125V clamp, DO-201AA axial, through hole.","salesMarkdown":"## TransZorb® bidirectional TVS for 77.8 V rails The 1.5KE91CA-E3/73: Its reverse standoff voltage of 77.8 V means it stays transparent below that level, then breaks down at a minimum of 86.5 V and clamps at 125 V maximum under a 12 A peak pulse current (10/1000 µs waveform). The bidirectional configuration (single channel) protects lines that carry both positive and negative swings relative to ground, such as AC signal pairs or DC rails where polarity reversal is possible. ## Peak pulse power and clamping margin The 125 V clamping voltage gives a 47.2 V margin above the standoff rail — enough headroom to keep downstream components below their absolute maximum ratings during a surge event. The DO-201AA axial package (DO-27 equivalent) is through-hole mounted, suitable for point-to-point wiring or PCB layouts where the lead bend absorbs mechanical stress. ## Active production — sourcing posture Listed as Active by Vishay, so the 1.5KE91CA-/73 remains a current-production part.","metaTitle":"1.5KE91CA-E3/73 TVS Diode, 1500W, 77.8V Standoff","metaDescription":"Vishay 1.5KE91CA-E3/73 TransZorb® bidirectional TVS, 1500W peak pulse, 77.8V standoff, 125V clamp. Active production. Sourced to order.","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 & Box (TB)","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":"$0.4460","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/1.5KE91CA-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/1.5KE91CA-E3-73 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}