{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5KE9.1CAHE3_A/C","brand":"Vishay General Semiconductor - Diodes Division","brandSlug":"vishay-general-semiconductor-diodes-division","productSlug":"1.5KE9.1CAHE3_A-C","canonicalUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5KE9.1CAHE3_A-C","factsUrl":"https://icboms.com/api/mcp/products/1.5KE9.1CAHE3_A%2FC","rawCanonicalId":null},"summary":{"shortDescription":"Vishay General Semiconductor - Diodes Division, TransZorb® Automotive AEC-Q101 TVS, Type Zener, 1.5KE9.1CAHE3_A/C, 1500W peak pulse, 7.78V standoff, 13.4V clamp, 112A Ipp, DO-201AA Axial.","salesMarkdown":"## AEC-Q101 qualified TVS for automotive power bus protection The Vishay 1.5KE9.1CAHE3_A/C is a 1500W bidirectional TransZorb TVS diode in the AEC-Q101 automotive series — the same TransZorb family used in engine control and transmission modules where a single surge event can write off a ECU if the clamp doesn't hold. Rated for a 7.78V reverse standoff with an 8.65V minimum breakdown and 13.4V clamping at 112A peak pulse current (10/1000µs waveform), this part sits on a 12V nominal automotive rail — the 7.78V standoff clears the battery voltage during cranking, while the 13.4V clamp catches load-dump transients before they reach the downstream regulator. An engine-bay ECU that sees 125°C ambient on a hot day still has 50°C margin before the junction limit, but the derating curve for peak pulse power above 25°C must be applied per the TransZorb application note. Through-hole DO-201AA (DO-27) axial package — the leads carry the surge current into the PCB copper pour. The 1500W rating assumes a 25°C ambient with the leads soldered to a minimum 30mm² copper pad on each side; a smaller pad area or a lifted lead reduces the surge capability. ## Sourcing posture for this automotive TVS The AEC-Q101 qualification means PPAP documentation is available from the manufacturer — an OEM auditor will accept the AEC-Q101 report in lieu of a separate PPAP submission for this part.","metaTitle":"Vishay 1.5KE9.1CAHE3_A/C TVS Diode, AEC-Q101, 1500W","metaDescription":"Active Vishay 1.5KE9.1CAHE3_A/C TransZorb TVS, AEC-Q101 qualified, 1500W peak pulse, 7.78V standoff, 13.4V clamp, DO-201AA axial. Sourced to order against 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 & 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":"1.5KE9.1","Operating Temperature":"-55°C~175°C(TJ)","Power Line Protection":"No","Bidirectional Channels":"1","Capacitance @ Frequency":"-","Supplier Device Package":"1.5KE","Voltage - Breakdown (Min)":"8.65V","Voltage - Clamping (Max) @ Ipp":"13.4V","Voltage - Reverse Standoff (Typ)":"7.78V","Current - Peak Pulse (10/1000µs)":"112A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.5346","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/1.5KE9.1CAHE3_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/1.5KE9.1CAHE3_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}}