{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5KE91AHE3_A/D","brand":"Vishay General Semiconductor - Diodes Division","brandSlug":"vishay-general-semiconductor-diodes-division","productSlug":"1.5KE91AHE3_A-D","canonicalUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5KE91AHE3_A-D","factsUrl":"https://icboms.com/api/mcp/products/1.5KE91AHE3_A%2FD","rawCanonicalId":null},"summary":{"shortDescription":"Vishay General Semiconductor - Diodes Division, Automotive AEC-Q101 TransZorb® series, TVS Zener diode, 1.5KE91AHE3_A/D, 1500W peak pulse, 77.8V standoff, DO-201AA axial through-hole.","salesMarkdown":"## Automotive-grade 1500 W surge clamp The 1.5KE91AHE3_A/D: This means it is screened for the temperature extremes and surge profiles found in vehicle electrical systems, not just general-purpose industrial use. The 1500 W rating at 10/1000 µs is the standard TVS benchmark — it defines the surge the diode can absorb once without failing short. ## AEC-Q101 and the under-hood temperature envelope The operating junction temperature range spans -55°C to 175°C, covering the full under-hood ambient plus self-heating margin. AEC-Q101 Grade 0 qualification (the highest automotive grade) is implied by the 175°C limit — parts rated to 150°C are typically Grade 1. This matters for engine-bay or transmission-mounted modules where ambient can exceed 125°C. ## Through-hole DO-201AA package and board integration The leads are tin-plated copper; the body is molded epoxy with a flammability rating per UL 94 V-0. Power line protection is not supported (the part is unidirectional, not bidirectional), so it is intended for DC rail clamping where the polarity is fixed. For AC or bidirectional lines, a pair of unidirectional diodes back-to-back or a dedicated bidirectional TVS is required.","metaTitle":"1.5KE91AHE3_A/D Vishay TVS, 1500W, AEC-Q101, DO-201AA","metaDescription":"Vishay 1.5KE91AHE3_A/D automotive TVS diode, 1500W peak pulse, 77.8V standoff, AEC-Q101 qualified. 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":"Automotive, AEC-Q101, TransZorb®","Package":"Tape & Box (TB)","Applications":"Automotive","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","Capacitance @ Frequency":"-","Supplier Device Package":"1.5KE","Unidirectional Channels":"1","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":"$0.5346","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/cbd949ebcf4c95d5b4ea8fdecf87536f.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What compliance documentation does Vishay provide for the 1.5KE91AHE3_A/D?","answer":"The part is AEC-Q101 qualified for automotive use. Vishay provides RoHS and REACH compliance declarations, and the device is manufactured in an IATF 16949-certified facility. The base product number is 1.5KE91."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5KE91AHE3_A-D","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/1.5KE91AHE3_A-D 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}}