{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5KE27AH","brand":"Taiwan Semiconductor Corporation","brandSlug":"taiwan-semiconductor-corporation","productSlug":"1.5KE27AH","canonicalUrl":"https://icboms.com/taiwan-semiconductor-corporation/1.5KE27AH","factsUrl":"https://icboms.com/api/mcp/products/1.5KE27AH","rawCanonicalId":null},"summary":{"shortDescription":"Taiwan Semiconductor 1.5KE27AH automotive TVS zener diode, 1500W peak pulse power, 23.1V reverse standoff, 37.5V clamping, DO-201AA axial leaded, AEC-Q101 qualified.","salesMarkdown":"## Automotive-grade 1500 W TVS in DO-201 The 1.5KE27AH is a 1500 W peak pulse power TVS zener diode from Taiwan Semiconductor, part of the 1.5KE series. This rail protects 24 V automotive buses — the 23.1 V standoff sits below the nominal 24 V line, so the diode stays high-impedance during normal operation and only clamps on transients. The DO-201AA (DO-27) axial-leaded package is through-hole mounted, suitable for point-of-entry protection on power lines or heavy-duty signal lines where board space is not the constraint. The junction temperature range spans -55 °C to 175 °C, covering the full automotive ambient envelope including engine-bay hot spots. ## Clamping performance and pulse handling The 42 A peak pulse current rating at the clamping voltage of 37.5 V confirms the diode can sink substantial surge current without exceeding its thermal limit during the pulse. The device is unidirectional (single-channel zener), so it clamps only one polarity — the anode connects to ground, the cathode to the protected rail. For bidirectional protection on AC or bipolar signal lines, a pair back-to-back is needed. ## Sourcing and supply posture The base product number is 1.5KE27, and the 'H' suffix indicates the automotive-grade AEC-Q101 variant. Standard and other grade variants exist in the same 1.5KE family, but the 'AH' suffix is the one with the full automotive qualification trace.","metaTitle":"1.5KE27AH Taiwan Semiconductor TVS, 1500W, DO-201","metaDescription":"Taiwan Semiconductor 1.5KE27AH automotive TVS zener, 1500W peak pulse, 23.1V standoff, AEC-Q101. Active production, sourced 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","Grade":"Automotive","Series":"1.5KE","Package":"Tape & Reel (TR)","Applications":"-","Mounting Type":"Through Hole","Qualification":"AEC-Q101","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/0891dd482ecc22e24afcaa2991f01657.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What compliance documentation does Taiwan Semiconductor provide for the 1.5KE27AH?","answer":"The 1.5KE27AH is AEC-Q101 qualified, which is the automotive stress test qualification standard. The manufacturer typically provides RoHS and REACH compliance declarations, as well as the AEC-Q101 test report and qualification letter upon request through the supply channel."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/taiwan-semiconductor-corporation/1.5KE27AH","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/1.5KE27AH 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}}