{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5KE540A/B","brand":"YAGEO","brandSlug":"yageo","productSlug":"1.5KE540A-B","canonicalUrl":"https://icboms.com/yageo/1.5KE540A-B","factsUrl":"https://icboms.com/api/mcp/products/1.5KE540A%2FB","rawCanonicalId":null},"summary":{"shortDescription":"YAGEO 1.5KE series Zener TVS diode, 1.5KE540A/B, 1500W peak pulse power, 459V standoff, 740V clamping, DO-201AA axial, through-hole, unidirectional.","salesMarkdown":"## 1500W transient clamp for 459V rails The 1.5KE540A/B: With a 459 V reverse standoff voltage and a 740 V clamping point at 2 A peak pulse current, it sits on a 400 V DC bus or a 277 V AC line and shunts transients that exceed the rail's dielectric withstand. The 513 V minimum breakdown voltage ensures the device stays off the rail during normal operation — the TVS only conducts when the transient pushes the line above that threshold. Unidirectional polarity means the cathode band marks the grounded side; reverse the orientation and the diode forward-conducts on the negative half-cycle. ## DO-201 axial — board integration and thermal path Housed in a DO-201AA (DO-27) axial leaded package, the 1.5KE540A/B mounts through-hole. The lead frame carries the transient current into the board copper; for a 1500 W pulse, the PCB pad area and trace width to the protected rail must handle the 2 A peak without fusing. The junction operates from -55°C to 150°C, so the part survives the thermal cycle of an outdoor enclosure or an engine bay without derating the standoff voltage. The axial body is box-packaged — the leads are formed for automatic insertion, and the part's 1500 W rating is tested with the device mounted on a standard copper-land pattern per the JEDEC 51-5 thermal reference. No power line protection (the flag) means this TVS is designed for signal, data, and DC bus clamping, not for mains AC surge suppression where a MOV or GDT would be the correct choice.","metaTitle":"YAGEO 1.5KE540A/B Zener TVS, 1500W, DO-201","metaDescription":"YAGEO 1.5KE540A/B Zener TVS diode, 1500W peak pulse power, 459V standoff, 740V clamping. DO-201AA axial package. Active production. Request quote.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"YAGEO","Type":"Zener","Series":"1.5KE","Package":"Box","Applications":"General Purpose","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":"1.5KE540","Operating Temperature":"-55°C ~ 150°C (TJ)","Power Line Protection":"No","Capacitance @ Frequency":"-","Supplier Device Package":"DO-201","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"513V","Voltage - Clamping (Max) @ Ipp":"740V","Voltage - Reverse Standoff (Typ)":"459V","Current - Peak Pulse (10/1000µs)":"2A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.4400","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/7e7401a50e18f12b75b7097fbc4378a1.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What are the key clamping specs for 1.5KE540A/B?","answer":"The 1.5KE540A/B has a 459 V reverse standoff voltage, a 513 V minimum breakdown voltage, and clamps at 740 V maximum at a 2 A peak pulse current (10/1000 µs waveform). It handles 1500 W of peak pulse power."},{"question":"What package does the 1.5KE540A/B come in?","answer":"The 1.5KE540A/B is supplied in a DO-201AA (DO-27) axial leaded through-hole package. The supplier device package is DO-201."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/yageo/1.5KE540A-B","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/yageo/1.5KE540A-B 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}}