SWI3-N-USB Series
3 W, DoE Level VI Efficiency, USB Input, US Input Blade, Wall Plug Adapter, Ac-Dc Power Supply

The SWI3-N-USB series is a 3 W North American wall power adapter designed to meet the current US DoE Level VI efficiency standards.  Featuring an integrated USB connector and an ultra-compact design, this ac-dc power supply is a continuation of CUI's initiative to provide customers with the most efficient power solutions utilizing the latest in green power technology.


  • Up to 3 W continuous power
  • IEC 62368-1 and 60950-1 compliant
  • DoE Level VI and CoC Tier 2 compliant
  • No-load power consumption < 0.075 W
  • Ultra-compact case
  • Universal input voltage range
  • Integrated USB Type A connector
  • Over current, over voltage, and short circuit protections
  • UL/cUL and PSE safety approvals
  • Class II construction
  • Limited Power Source (LPS) rated


  • Input Voltage (Vac)
    90 ~ 264
  • Package Type
    Wall Plug
  • Grade
  • Dimensions LxWxH (in)
    2.54 x 1.42 x 0.89
  • Dimensions LxWxH (mm)
    64.6 x 36 x 22.5

Available Models

Model Number Power (W) Output Voltage (Vdc) Output Current (A) Safety Approvals Stock Check Sample Request RFQ
SWI3-5-N-I38 3 5 0.6 PSE, UL/cUL Stock Check SWI3-5-N-I38 Sample Request Request a Quote