
ElectroCraze UBEC 3A
Compact high-efficiency switch-mode UBEC delivering 3A continuous at a selectable 5V or 7.4V output from a 5–28V input. Powers receivers, servos, flight controllers and FPV gear.
- 3A continuous output, 5V (default) or 7.4V via solder pad
- Wide 5V–28V input range
- ON/OFF control through the CTL pad
- Green LED power indicator
- Tiny 17 × 12 × 6 mm board
The ElectroCraze UBEC 3A is a high-efficiency switch-mode BEC (Battery Elimination Circuit) for RC and robotics applications. It converts your LiPo battery voltage (5V–28V input) into a stable 5V or 7.4V output, safely powering receivers, servos, flight controllers and FPV equipment.
With 3A continuous output, it is an ideal drop-in for OPTO ESC setups that do not supply receiver power. Built-in overcurrent, short-circuit and overheat protection keep your downstream devices safe, and a green LED confirms the UBEC is powered on.
Key Features:-
- Efficient DC-DC regulation: high conversion efficiency from the switch-mode design
- Adjustable output voltage: select 5.0V or 7.4V by soldering a PCB pad
- ON/OFF control: switch the output remotely through the CTL pad
Output Voltage Selection:-
The default output is 5V. Solder the 7.4V PCB pad to switch the output to 7.4V. Check your receiver, servo or flight controller's voltage rating before choosing 7.4V.
ON / OFF Control (CTL Pad):-
| CTL Signal | UBEC Status |
|---|---|
| 0V or not connected | ON |
| 3V – 28V applied | OFF |
Wiring:-
- Input: Vin → Battery (+), G → Battery (−)
- Output: 5V or 7.4V → Load (+), G → Load ground (−)
- CTL: leave open or at 0V for ON, apply 3V–28V for OFF
Applications:-
RC airplanes • Drones & multirotors • RC helicopters • Robotic systems • FPV equipment • Flight controllers & receivers
| Model | ElectroCraze UBEC 3A |
|---|---|
| Input Voltage | 5V – 28V |
| Output Voltage | 5V (default) / 7.4V (selectable via PCB pad) |
| Output Current | 3A continuous |
| ON/OFF Control | CTL pad (0V/open = ON, 3V–28V = OFF) |
| LED Indicator | Green – Power ON |
| Dimensions | 17 × 12 × 6 mm |
| Weight | 21 g |
Package Includes:-
- 1 × ElectroCraze UBEC 3A

