{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5KE91AHE3_A/C","brand":"Vishay General Semiconductor - Diodes Division","brandSlug":"vishay-general-semiconductor-diodes-division","productSlug":"1.5KE91AHE3_A-C","canonicalUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5KE91AHE3_A-C","factsUrl":"https://icboms.com/api/mcp/products/1.5KE91AHE3_A%2FC","rawCanonicalId":null},"summary":{"shortDescription":"Vishay General Semiconductor, Automotive AEC-Q101 TransZorb TVS, 1.5 kW, 1.5KE91AHE3_A/C, DO-201AA Axial, 77.8V Standoff, 125V Clamp, 12A Ipp.","salesMarkdown":"The 1.5KE91AHE3_A/C: This is a 1.5 kW peak-pulse TVS in the TransZorb series, rated for a 10/1000 µs waveform. The 86.5 V minimum breakdown and 125 V clamp mean it triggers well above a 24 V nominal rail's worst-case load-dump transient, but still catches the surge before it reaches downstream silicon. The 77.8 V reverse standoff is the DC operating ceiling — the diode stays off below that voltage, so it doesn't leak onto a 48 V bus. Peak pulse current is 12 A at the clamp voltage. For a 12 V system, the margin between the 77.8 V standoff and the clamp is wide enough that a 24 V supply rail won't false-trigger on normal switching noise. ## AEC-Q101 and the under-hood temperature envelope The -55 to +175 °C junction range covers engine-bay ambient and self-heating during a pulse — the 175 °C ceiling is the die's limit, not the solder joint's. The TransZorb series uses a glass-passivated junction that holds leakage stable across the temperature range. On a bench, you'll see the leakage climb above 125 °C, but the passivation keeps it from thermal runaway under repetitive pulses. DO-201AA (DO-27) axial leaded package — through-hole mount with a 0.042-inch lead diameter. The body is 9.1 mm long; the anode band is the cathode end. For rework, the axial leads need a 1.2 mm hole in the PCB; a standard soldering iron with a 2 mm chisel tip wets the joint in 2-3 seconds. No moisture sensitivity level to track — the glass passivation doesn't absorb humidity. Tape-and-reel packaging is the factory format — the axial leads are taped between carrier tapes with a 0.75-inch pitch. For a repair bench, you'll likely see the loose part in a cut tape or a bulk bag; the cathode band is the only orientation mark.","metaTitle":"Vishay 1.5KE91AHE3_A/C 1.5 kW TVS, 125V Clamp, AEC-Q101","metaDescription":"Vishay 1.5KE91AHE3_A/C TransZorb TVS, 1.5 kW peak pulse, 125V clamp, AEC-Q101 qualified. Active production. Available 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":"Automotive, AEC-Q101, TransZorb®","Package":"Tape & Reel (TR)","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 is the closest pin-compatible alternative in the same family?","answer":"The base product number is 1.5KE91. Pin-compatible siblings in the same TransZorb series share the DO-201AA package and 1.5 kW rating but differ in standoff voltage — the 1.5KE91A is the unidirectional version; the 1.5KE91CA is the bidirectional variant. For a direct drop-in with the same breakdown, the 1.5KE91A (without the automotive suffix) is electrically identical but lacks AEC-Q101 screening."},{"question":"What compliance documentation does Vishay provide for this part?","answer":"As an AEC-Q101 qualified part, Vishay provides a PPAP submission package on request, including the PCN (process change notification) history, RoHS/REACH compliance declarations, and the qualification test report. The standard datasheet covers the electrical limits and thermal derating curve."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5KE91AHE3_A-C","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-C 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}}