The Part Number: KAS4-9 Manufacturer: TDK-LAMBDA Country of Origin: Taiwan (TW) Unit of Measure: Each (EA) ECCN: EAR99 Package Type: Resin case (UL 94V-0) Datasheet
Features & Benefits
Wide AC-DC input voltage range: 115-227 VAC, 47-63Hz or 120-430 VDC
Output: 9V at 0.444A, delivering 4W of power
Class II construction requiring no ground connection
Operates over a broad temperature range: -40°C to +80°C (derating to 40% load at higher temperatures)
High efficiency and low off-load power consumption
Conforms to safety standards with UL/CSA/IEC/EN62368-1, 60950-1, IEC/EN60335-1 certifications
Electromagnetic Compatibility: EN55032 Class B, EN55024 immunity
Compact PCB-mount design with resin case for durability
Long MTBF exceeding 450,000 hours
3-year warranty
Technical Specifications
Specification
Details
Input Voltage Range
90-305VAC / 120-430VDC
Input Current
15A (115VAC) / 25A (230VAC)
Inrush Current Limiting
30A (115VAC) / 50A (230VAC)
Output Power
4W
Output Voltage
9V
Output Current
0.444A
Efficiency
High efficiency typical
Operating Temperature
-40°C to +80°C (derating at higher temps)
Storage Temperature
-40°C to +85°C
Humidity
10% to 95% RH (non-condensing)
Safety Certifications
UL, CSA, IEC, EN62368-1, 60950-1, IEC/EN60335-1
EMC Compliance
EN55032 Class B, EN55024
Dimensions
1.12 x 1.02 x 0.67 inches (28.5 x 25.8 x 17.0 mm)
Weight
19.9g
Mounting
PCB board mountable
Warranty
3 years
Additional Notes
Designed for safety and reliable operation in various industrial and electronic applications.
Last time buy date for KAS series was December 9, 2020.
For more detailed specifications and application information, please refer to the datasheet.
Note: The datasheet was not processed; please search the internet for the part number for more details.
{"id":10013370155325,"title":"KAS4-9","handle":"kas4-9","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003ePart Number:\u003c\/strong\u003e KAS4-9\u003cbr\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e TDK-LAMBDA\u003cbr\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e Taiwan (TW)\u003cbr\u003e\n\u003cstrong\u003eUnit of Measure:\u003c\/strong\u003e Each (EA)\u003cbr\u003e\n\u003cstrong\u003eECCN:\u003c\/strong\u003e EAR99\u003cbr\u003e\n\u003cstrong\u003ePackage Type:\u003c\/strong\u003e Resin case (UL 94V-0)\u003cbr\u003e\n\u003ca href=\"https:\/\/www.waldomapac.com\/upload\/parts\/datasheets\/mf-tdl\/tdl-kas-4-9.pdf\" target=\"_blank\"\u003eDatasheet\u003c\/a\u003e\u003c\/p\u003e\n\n\u003ch3\u003eFeatures \u0026amp; Benefits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWide AC-DC input voltage range: 115-227 VAC, 47-63Hz or 120-430 VDC\u003c\/li\u003e\n\u003cli\u003eOutput: 9V at 0.444A, delivering 4W of power\u003c\/li\u003e\n\u003cli\u003eClass II construction requiring no ground connection\u003c\/li\u003e\n\u003cli\u003eOperates over a broad temperature range: -40°C to +80°C (derating to 40% load at higher temperatures)\u003c\/li\u003e\n\u003cli\u003eHigh efficiency and low off-load power consumption\u003c\/li\u003e\n\u003cli\u003eConforms to safety standards with UL\/CSA\/IEC\/EN62368-1, 60950-1, IEC\/EN60335-1 certifications\u003c\/li\u003e\n\u003cli\u003eElectromagnetic Compatibility: EN55032 Class B, EN55024 immunity\u003c\/li\u003e\n\u003cli\u003eCompact PCB-mount design with resin case for durability\u003c\/li\u003e\n\u003cli\u003eLong MTBF exceeding 450,000 hours\u003c\/li\u003e\n\u003cli\u003e3-year warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Voltage Range\u003c\/td\u003e\n\u003ctd\u003e90-305VAC \/ 120-430VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Current\u003c\/td\u003e\n\u003ctd\u003e15A (115VAC) \/ 25A (230VAC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInrush Current Limiting\u003c\/td\u003e\n\u003ctd\u003e30A (115VAC) \/ 50A (230VAC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Power\u003c\/td\u003e\n\u003ctd\u003e4W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Voltage\u003c\/td\u003e\n\u003ctd\u003e9V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Current\u003c\/td\u003e\n\u003ctd\u003e0.444A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEfficiency\u003c\/td\u003e\n\u003ctd\u003eHigh efficiency typical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-40°C to +80°C (derating at higher temps)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage Temperature\u003c\/td\u003e\n\u003ctd\u003e-40°C to +85°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHumidity\u003c\/td\u003e\n\u003ctd\u003e10% to 95% RH (non-condensing)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSafety Certifications\u003c\/td\u003e\n\u003ctd\u003eUL, CSA, IEC, EN62368-1, 60950-1, IEC\/EN60335-1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEMC Compliance\u003c\/td\u003e\n\u003ctd\u003eEN55032 Class B, EN55024\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e1.12 x 1.02 x 0.67 inches (28.5 x 25.8 x 17.0 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e19.9g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting\u003c\/td\u003e\n\u003ctd\u003ePCB board mountable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e3 years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eAdditional Notes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDesigned for safety and reliable operation in various industrial and electronic applications.\u003c\/li\u003e\n\u003cli\u003eLast time buy date for KAS series was December 9, 2020.\u003c\/li\u003e\n\u003cli\u003eFor more detailed specifications and application information, please refer to the \u003ca href=\"https:\/\/www.waldomapac.com\/upload\/parts\/datasheets\/mf-tdl\/tdl-kas-4-9.pdf\" target=\"_blank\"\u003edatasheet\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eNote: The datasheet was not processed; please search the internet for the part number for more details.\u003c\/p\u003e","published_at":"2025-08-10T15:41:59+05:30","created_at":"2025-08-10T15:41:59+05:30","vendor":"Waldom Electonics","type":"Other Semiconductors","tags":["227 V","444A","4W","AC","IMPORT_CSV","Other","Power","TDKLA","WLDM"],"price":210381,"price_min":210381,"price_max":210381,"available":true,"price_varies":false,"compare_at_price":null,"compare_at_price_min":0,"compare_at_price_max":0,"compare_at_price_varies":false,"variants":[{"id":50578279432509,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"KAS4-9","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"KAS4-9","public_title":null,"options":["Default Title"],"price":210381,"weight":250,"compare_at_price":null,"inventory_management":"shopify","barcode":"KAS4-9","requires_selling_plan":false,"selling_plan_allocations":[]}],"images":["\/\/thinkrobotics.com\/cdn\/shop\/files\/55847799.jpg?v=1754820722"],"featured_image":"\/\/thinkrobotics.com\/cdn\/shop\/files\/55847799.jpg?v=1754820722","options":["Title"],"media":[{"alt":null,"id":45762295103805,"position":1,"preview_image":{"aspect_ratio":1.0,"height":600,"width":600,"src":"\/\/thinkrobotics.com\/cdn\/shop\/files\/55847799.jpg?v=1754820722"},"aspect_ratio":1.0,"height":600,"media_type":"image","src":"\/\/thinkrobotics.com\/cdn\/shop\/files\/55847799.jpg?v=1754820722","width":600}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003ePart Number:\u003c\/strong\u003e KAS4-9\u003cbr\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e TDK-LAMBDA\u003cbr\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e Taiwan (TW)\u003cbr\u003e\n\u003cstrong\u003eUnit of Measure:\u003c\/strong\u003e Each (EA)\u003cbr\u003e\n\u003cstrong\u003eECCN:\u003c\/strong\u003e EAR99\u003cbr\u003e\n\u003cstrong\u003ePackage Type:\u003c\/strong\u003e Resin case (UL 94V-0)\u003cbr\u003e\n\u003ca href=\"https:\/\/www.waldomapac.com\/upload\/parts\/datasheets\/mf-tdl\/tdl-kas-4-9.pdf\" target=\"_blank\"\u003eDatasheet\u003c\/a\u003e\u003c\/p\u003e\n\n\u003ch3\u003eFeatures \u0026amp; Benefits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWide AC-DC input voltage range: 115-227 VAC, 47-63Hz or 120-430 VDC\u003c\/li\u003e\n\u003cli\u003eOutput: 9V at 0.444A, delivering 4W of power\u003c\/li\u003e\n\u003cli\u003eClass II construction requiring no ground connection\u003c\/li\u003e\n\u003cli\u003eOperates over a broad temperature range: -40°C to +80°C (derating to 40% load at higher temperatures)\u003c\/li\u003e\n\u003cli\u003eHigh efficiency and low off-load power consumption\u003c\/li\u003e\n\u003cli\u003eConforms to safety standards with UL\/CSA\/IEC\/EN62368-1, 60950-1, IEC\/EN60335-1 certifications\u003c\/li\u003e\n\u003cli\u003eElectromagnetic Compatibility: EN55032 Class B, EN55024 immunity\u003c\/li\u003e\n\u003cli\u003eCompact PCB-mount design with resin case for durability\u003c\/li\u003e\n\u003cli\u003eLong MTBF exceeding 450,000 hours\u003c\/li\u003e\n\u003cli\u003e3-year warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Voltage Range\u003c\/td\u003e\n\u003ctd\u003e90-305VAC \/ 120-430VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Current\u003c\/td\u003e\n\u003ctd\u003e15A (115VAC) \/ 25A (230VAC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInrush Current Limiting\u003c\/td\u003e\n\u003ctd\u003e30A (115VAC) \/ 50A (230VAC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Power\u003c\/td\u003e\n\u003ctd\u003e4W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Voltage\u003c\/td\u003e\n\u003ctd\u003e9V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Current\u003c\/td\u003e\n\u003ctd\u003e0.444A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEfficiency\u003c\/td\u003e\n\u003ctd\u003eHigh efficiency typical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-40°C to +80°C (derating at higher temps)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage Temperature\u003c\/td\u003e\n\u003ctd\u003e-40°C to +85°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHumidity\u003c\/td\u003e\n\u003ctd\u003e10% to 95% RH (non-condensing)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSafety Certifications\u003c\/td\u003e\n\u003ctd\u003eUL, CSA, IEC, EN62368-1, 60950-1, IEC\/EN60335-1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEMC Compliance\u003c\/td\u003e\n\u003ctd\u003eEN55032 Class B, EN55024\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e1.12 x 1.02 x 0.67 inches (28.5 x 25.8 x 17.0 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e19.9g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting\u003c\/td\u003e\n\u003ctd\u003ePCB board mountable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e3 years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eAdditional Notes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDesigned for safety and reliable operation in various industrial and electronic applications.\u003c\/li\u003e\n\u003cli\u003eLast time buy date for KAS series was December 9, 2020.\u003c\/li\u003e\n\u003cli\u003eFor more detailed specifications and application information, please refer to the \u003ca href=\"https:\/\/www.waldomapac.com\/upload\/parts\/datasheets\/mf-tdl\/tdl-kas-4-9.pdf\" target=\"_blank\"\u003edatasheet\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eNote: The datasheet was not processed; please search the internet for the part number for more details.\u003c\/p\u003e"}
