DC Transformer Type 121S3-3.3


Most important features

  • Ultrawide 1 : 5 input voltage range from 8V up to 40V
  • Output voltage of 3.3V
  • Output power of 5W
  • Capable for stationary ambient temperatures up to +71°C
  • No derating of power
  • Compact DIL24 metal case
  • Integrated EMI input filter
icon: lead free

Description and resources

The DC Tranformer 121S3-3.3 is a member of the 100 series buck power converter. The transformer includes a softstart, an input undervoltage lockout and a permanent short circuit protection to ensure efficient module protection. The soft start allows current limitation and eliminates inrush current during startup. The short circuit protection completely protects the transformer against short circuits of any duration by a shut down and restores to normal operation when the overload is removed.