{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5KE440H","brand":"Taiwan Semiconductor Corporation","brandSlug":"taiwan-semiconductor-corporation","productSlug":"1.5KE440H","canonicalUrl":"https://icboms.com/taiwan-semiconductor-corporation/1.5KE440H","factsUrl":"https://icboms.com/api/mcp/products/1.5KE440H","rawCanonicalId":null},"summary":{"shortDescription":"Taiwan Semiconductor 1.5KE series Zener TVS diode, 1.5KE440H, 1500W peak pulse power, 356V reverse standoff, 631V clamping, unidirectional, DO-201 axial, AEC-Q101 automotive grade.","salesMarkdown":"## What the 1500W rating means for your protection design The 1.5KE440H: The clamping voltage hits 631V max at 2.4A peak pulse current — this sets the voltage the downstream circuitry must survive during a transient event. The 356V reverse standoff is the maximum DC voltage the diode blocks without conducting; for a 400V bus or a 277VAC line, this provides margin. Unidirectional configuration means it clamps only one polarity — suitable for DC rails where the transient is positive relative to ground. No power-line protection means it is designed for signal or DC bus clamping, not AC mains surge suppression. ## Package and board integration DO-201AA / DO-27 axial leaded package, supplier device package DO-201. Through-hole mount — the leads are 0.042-inch diameter, spaced 0.375-inch apart. The axial body sits above the board; no thermal pad or exposed paddle to consider. Tape-and-reel packaging is for automated insertion, not hand placement.","metaTitle":"1.5KE440H TVS Diode, 1500W, 356V Standoff, DO-201","metaDescription":"Taiwan Semiconductor 1.5KE440H Zener TVS diode, 1500W peak pulse, 356V 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","Grade":"Automotive","Series":"1.5KE","Package":"Tape & Reel (TR)","Applications":"General Purpose","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":"1.5KE440","Operating Temperature":"-55°C ~ 175°C (TJ)","Power Line Protection":"No","Capacitance @ Frequency":"-","Supplier Device Package":"DO-201","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"396V","Voltage - Clamping (Max) @ Ipp":"631V","Voltage - Reverse Standoff (Typ)":"356V","Current - Peak Pulse (10/1000µs)":"2.4A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.3617","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/e8ae84728402a19a0fbfaf0218c89ca3.pdf","sourceUrl":null},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/taiwan-semiconductor-corporation/1.5KE440H","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/1.5KE440H 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}}