Proper BEC with 10A output
The 3A-UBEC is a switch mode DC/DC regulator, it outputs a consistent safe voltage for the receiver, gyro and servos. It is very suitable for RC helicopter and other RC models especially when the built-in BEC in the speed controller has a very limited output capability.
The 8A-UBEC is a switch-mode DC-DC regulator works with a 2-3S Lipo battery, it outputs a consistent safe voltage for your receiver, gyro and servos. It is very suitable for large scale RC models with many servos such as nitro powered RC helicopters and airplanes.