{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5KE9.1AHA0G","brand":"Taiwan Semiconductor Corporation","brandSlug":"taiwan-semiconductor-corporation","productSlug":"1.5KE9.1AHA0G","canonicalUrl":"https://icboms.com/taiwan-semiconductor-corporation/1.5KE9.1AHA0G","factsUrl":"https://icboms.com/api/mcp/products/1.5KE9.1AHA0G","rawCanonicalId":null},"summary":{"shortDescription":"Taiwan Semiconductor Corporation 1.5KE series Automotive AEC-Q101 Zener TVS, 1.5KE9.1AHA0G, 1500W peak pulse power, 7.78V reverse standoff, 13.4V clamp, unidirectional, DO-201AA/DO-27 axial through-hole.","salesMarkdown":"## What the ratings mean for a 12V automotive rail The 1.5KE9.1AHA0G: The 7.78V reverse standoff voltage means it sits across a nominal 12V supply rail without conducting during normal operation — the diode only starts clamping when the transient exceeds the 8.65V minimum breakdown threshold. Maximum clamping is 13.4V at the 117A peak pulse current — that keeps the transient below the 16V abs-max of many downstream 12V-rated ECUs and sensors. The 1500W rating gives headroom for load-dump and inductive kickback events common in automotive 12V systems. ## Automotive qualification and temperature envelope The 175°C TJ max allows the die to absorb repetitive pulse energy without derating the junction in high-ambient environments. ## Package and board integration Through-hole DO-201AA (DO-27 axial) package — the 0.042-inch lead diameter solders into standard 0.036-inch plated through-holes. The axial body stands off from the board, so conformal coating flows under the part without bridging the cathode band to the anode lead. Supplied in Tape & Box (TB) format — the axial leads are taped for automatic insertion, not loose in a bag. The base product number 1.5KE9.1 identifies the family; the AHA0G suffix encodes the automotive AEC-Q101 grade and packaging variant. ## No power line protection — application fit Power Line Protection is flagged as 'No' — this TVS is designed for signal-line and low-power rail clamping, not for direct AC mains or high-energy DC bus protection. It protects 12V sensor supplies, LIN bus, CAN bus, and similar automotive signal/control lines where the energy in the transient is bounded by the 1500W pulse rating. Single unidirectional channel — the cathode band marks the protected line; the anode connects to ground. For bipolar or AC-coupled lines, two devices back-to-back or a bidirectional variant from the same 1.5KE family would be needed.","metaTitle":"1.5KE9.1AHA0G TVS Diode, 1500W, DO-201, AEC-Q101","metaDescription":"1.5KE9.1AHA0G Zener TVS, 1500W peak pulse, 7.78V reverse standoff, 13.4V clamp, AEC-Q101 automotive grade, DO-201 axial. Active, available to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"Taiwan Semiconductor Corporation","Type":"Zener","Series":"Automotive, AEC-Q101, 1.5KE","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":"1.5KE9.1","Operating Temperature":"-55°C~175°C(TJ)","Power Line Protection":"No","Capacitance @ Frequency":"-","Supplier Device Package":"DO-201","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"8.65V","Voltage - Clamping (Max) @ Ipp":"13.4V","Voltage - Reverse Standoff (Typ)":"7.78V","Current - Peak Pulse (10/1000µs)":"117A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/a688563676897fea683fa9d5a5542f4e.pdf","sourceUrl":null},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/taiwan-semiconductor-corporation/1.5KE9.1AHA0G","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/taiwan-semiconductor-corporation/1.5KE9.1AHA0G 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}}