{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5KE39AH","brand":"Taiwan Semiconductor Corporation","brandSlug":"taiwan-semiconductor-corporation","productSlug":"1.5KE39AH","canonicalUrl":"https://icboms.com/taiwan-semiconductor-corporation/1.5KE39AH","factsUrl":"https://icboms.com/api/mcp/products/1.5KE39AH","rawCanonicalId":null},"summary":{"shortDescription":"Taiwan Semiconductor 1.5KE series Automotive Zener TVS, 1.5KE39AH, 1500W peak pulse, 33.3V standoff, 53.9V clamp, 29A Ipp, DO-201 axial, AEC-Q101.","salesMarkdown":"## Automotive-grade transient suppressor for 33 V rails The 1.5KE39AH is a 1500 W peak-pulse Zener TVS diode from Taiwan Semiconductor's 1.5KE series, designed to clamp transients on 33.3 V reverse-standoff rails. Its AEC-Q101 qualification places it in the automotive temperature band of -55°C to 175°C — suitable for under-hood ECU, battery management, and sensor supply protection where the ambient sees 125°C+ and the junction climbs from self-heating during a surge event. The minimum breakdown voltage is 37.1 V, so the diode starts conducting before the protected rail reaches its abs-max rating — a 33.3 V nominal rail with a 36 V abs-max sees the TVS clamp the transient before the downstream ICs see overvoltage. This clamping figure sets the voltage that appears across the protected load during a surge; if the downstream components are rated for 60 V, the 53.9 V clamp leaves margin. The 1500 W peak pulse power is the product of the clamping voltage and the peak pulse current — at 53.9 V × 29 A, the rating is consistent. The unidirectional channel means this device protects a single polarity rail; reverse-bias protection requires a second device or a different part number. Power line protection is not supported — this is a signal- or low-power rail TVS, not a mains surge suppressor. Supplied in tape and reel for automated insertion. The base product number 1.5KE39 identifies the voltage variant; the 'AH' suffix denotes the automotive grade and AEC-Q101 qualification.","metaTitle":"1.5KE39AH TVS Diode, 33.3V Standoff, DO-201, AEC-Q101","metaDescription":"Taiwan Semiconductor 1.5KE39AH automotive Zener TVS, 1500W peak pulse, 33.3V standoff, 53.9V clamp, DO-201 package. Active production, AEC-Q101 qualified.","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":"1.5KE39","Operating Temperature":"-55°C ~ 175°C (TJ)","Power Line Protection":"No","Capacitance @ Frequency":"-","Supplier Device Package":"DO-201","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"37.1V","Voltage - Clamping (Max) @ Ipp":"53.9V","Voltage - Reverse Standoff (Typ)":"33.3V","Current - Peak Pulse (10/1000µs)":"29A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.4993","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/01a4967ef4488565dae010c20538159d.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is 1.5KE39AH's listed type and grade?","answer":"The device type is Zener, and the grade is Automotive with AEC-Q101 qualification. This means it has passed automotive reliability stress tests including temperature cycling, high-temperature reverse bias, and ESD sensitivity per the AEC-Q101 standard."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/taiwan-semiconductor-corporation/1.5KE39AH","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/1.5KE39AH 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}}