You have no items in your shopping cart.

PSU5a 5V 3A Regulator in TO-220 form Factor

Be the first to review this product

Availability: In stock

  • Buy 5 for $7.45 each and save 7%
  • Buy 10 for $6.95 each and save 13%
  • Buy 25 for $5.95 each and save 26%
  • Buy 50 for $5.38 each and save 33%

More Views

This is a 5V 2.5A switch-mode voltage regulator. It is a high-efficiency replacement for popular three-terminal LM323T linear regulators and it is pin-to-pin compatible with the common and now obsolete LM323T linear regulators. The mechanical design allows the PSU5a to fit anywhere where an LM323T or an LM7805 was used. The maximum continuous output current is 3A and at room temperature the PSU5a does not need a heatsink to maintain this current indefinitely. All the required capacitors are included on the module, no external capacitors are required and additional input capacitors do no harm. The output voltage guaranteed to be within +/-1% as the load varies. The original LM323T had a rather loosely specified output voltage and it could vary by as much as 250mV without load and at room temperature. The PSU5a is accurate to winthin +/-2%. The module has thermal shutdown and current limit protection. The absolute maximum input voltage is 20V.


  • Drop-in replacement of the obsolete LM323T or equivalent linear voltage regulator.
  • Guaranteed 3A output current.
  • Input voltage range of 7.2V to 20V
  • Suitable for use in Pinball machines and video game consoles
  • High efficiency switching regulator design reduces power dissipation with superior voltage regulation compare to the LM323T.
  • Thermal shutdown and current limit protection
  • All components are mounted on one side of the PCB
  • Highest component is the inductor at 5mm above the PCB.
  • Available with or without pins.
  • Gold plated pins and PCB to withstand harsh environments over the long term.
  • Can drive inductive loads such as solenoids and DC motors.
  • 500kHz Switching Frequency
  • Made in the USA
  • The photographs show a PSU5a module next to a TO-220 package for a size comparison.

Write Your Own Review

Only registered users can write reviews. Please, log in or register