{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5KE27AHA0G","brand":"Taiwan Semiconductor Corporation","brandSlug":"taiwan-semiconductor-corporation","productSlug":"1.5KE27AHA0G","canonicalUrl":"https://icboms.com/taiwan-semiconductor-corporation/1.5KE27AHA0G","factsUrl":"https://icboms.com/api/mcp/products/1.5KE27AHA0G","rawCanonicalId":null},"summary":{"shortDescription":"Taiwan Semiconductor Corporation 1.5KE series Automotive AEC-Q101 Zener TVS diode, 1.5KE27AHA0G, 1500W peak pulse, 23.1V reverse standoff, 37.5V clamping, DO-201AA axial through-hole.","salesMarkdown":"## Clamping voltage and pulse handling for 24V automotive rails The 1.5KE27AHA0G is a Zener-type TVS diode from Taiwan Semiconductor's 1.5KE series, designed to clamp transients on 24V nominal automotive power rails. Its 23.1V reverse standoff voltage sits below the rail's normal operating range, so the diode stays out of conduction during steady-state conditions. When a surge pushes the line above 25.7V, the device begins to avalanche, clamping at a maximum of 37.5V while shunting 42A of peak pulse current in the 10/1000µs waveform. The unidirectional configuration means it protects a single polarity rail — positive transients above ground are clamped, while negative excursions forward-bias the diode and are shunted to ground. ## Automotive qualification and temperature envelope Qualified to AEC-Q101, the 1.5KE27AHA0G meets the stress and reliability requirements for automotive-grade discrete semiconductors — temperature cycling, high-temperature reverse bias, and ESD robustness are screened per the standard. The operating junction temperature range spans -55°C to 175°C, covering under-hood and transmission-bay thermal profiles with margin above the 125°C typical automotive ambient. The device is marked as Active in production, meaning it remains a current catalog item from Taiwan Semiconductor. ## Through-hole package and board integration Housed in a DO-201AA (DO-27) axial-lead package, the 1.5KE27AHA0G is a through-hole device suited for point-to-point wiring, terminal blocks, or PCB mounting with the leads formed to the hole pitch. The DO-201 footprint is a standard axial diode layout — the anode and cathode bands are marked on the body, and the lead diameter accepts standard 1.0mm PCB holes.","metaTitle":"1.5KE27AHA0G TVS Diode, 1.5kW, 23.1V Standoff, DO-201","metaDescription":"Taiwan Semiconductor 1.5KE27AHA0G Zener TVS, 1500W peak pulse, 23.1V reverse standoff, AEC-Q101 automotive grade. Active production, sourced per RFQ.","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":"1.5KE27","Operating Temperature":"-55°C~175°C(TJ)","Power Line Protection":"No","Capacitance @ Frequency":"-","Supplier Device Package":"DO-201","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"25.7V","Voltage - Clamping (Max) @ Ipp":"37.5V","Voltage - Reverse Standoff (Typ)":"23.1V","Current - Peak Pulse (10/1000µs)":"42A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.4993","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/a688563676897fea683fa9d5a5542f4e.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the 1.5KE27AHA0G's reverse standoff voltage and clamping performance?","answer":"The reverse standoff voltage is 23.1V, meaning the diode does not conduct at normal 24V rail levels. Breakdown begins at 25.7V, and the maximum clamping voltage at the rated 42A peak pulse current is 37.5V. This clamps a 1500W surge to a safe level for downstream electronics."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/taiwan-semiconductor-corporation/1.5KE27AHA0G","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/1.5KE27AHA0G 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}}