Dualsky VR-3 (UBEC) 3A Switching Mode Voltage Regulator

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The VR-3 is a switch-mode DC regulator separated from ESC, it will take high-voltage (5.5V-23V) power from your battery pack and convert it to a consistent safe voltage for your receiver, gyro and servos. The VR-3 allows you to easily choose whether to run your system at 5 or 6 volts. Running at 6 volts gives faster servo speed, and most modern receivers and servos will work fine at this voltage.


  • VR-3 is an advanced switching regulator, provides over-current and over-heat protection function, and the switching frequency is 300KHz.The max efficiency of this chip is 92%.
  • The smallest size and the lightest weight.
  • Compare linear BEC with switch-mode BEC: When using a lithium battery pack more than 3s, a switch-mode BEC has much higher efficiency than linear BEC.
  • Reverse polarity protection at input is provided.


Dimensions:21.5 x 15.5 x 13.5mm
Output:5V/3A or 6V/3A, MAX. 5A(10% Duty)
Input:5.5V-23V (2-5s lithium battery pack, 5-15cells NiMh / NiCd battery pack)
Weight:10g (Including cables)
Idle power consumption:< 10 ma from battery
Connections:Red/black 24 ga. Wire pair for main power in, 24 ga. red/black Servo lead out to Rx, JR style
Controls:Jumper selects 6v or 5v output
Indicators:green LED shows power ON
Installation:recommend mounting in airflow to improve reliability and efficiency
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Order Code: DUA060
Manufactured By Dualsky