Receiver Power Supply BEC (UBEC) 3A /5A /7A /15A Step-Down Regulator Module Features: 1. Utilizes a switching power supply structure design with a switching power supply main control chip operating at a frequency of 300 kHz, featuring overcurrent and over-temperature protection functions, and achieving a chip efficiency of up to 92%; 2. Extremely compact size and lightweight design; 3. Electronic components are protected by a shielding cover, and output lines are equipped with magnetic rings, significantly reducing electromagnetic interference and ensuring normal operation of the receiver. 4. Features protection against reversed power polarity. If the power is accidentally reversed, it will not cause damage to the UBEC. Advantages compared to traditional BEC: 5. Compared to linear regulated BEC, the advantages of switch-mode power supply BEC are primarily reflected in the following: When using 3-cell (11.1V) or higher batteries, it significantly reduces BEC heat generation and improves overall efficiency. For example, when using 4 lithium batteries, the operating voltage is approximately 14.8V. With a traditional linear regulator, to output 5V/1A, the power supply must also input 1A. Therefore, there is a power consumption of 14.8V × 1A = 14.8W on the BEC. However, the actual useful output of the BEC is only 5V × 1A = 5W, resulting in an overall efficiency of 5/14.8 = 33.8%. The remaining 9.8W of power consumption is converted into heat, causing the BEC to overheat, the chip to enter protection mode, and the system to malfunction; 6. Using a switching power supply method, to output 5V/1A current, our actual testing shows that the power supply only needs to input 0.38A current, i.e., 14.8V × 0.38A = 5.6W power consumption. UBEC-3A specifications: Operating voltage: Lipo 2S-5S Continuous current: 3A Peak current: MIN 4A for 20 seconds Output voltage: 5.25V ±0.5V Weight: 6g UBEC-5A Specifications: Operating voltage: 5.5V-35V Lipo 2S-8S Continuous current: 5A Peak current: MIN 6A for 20 seconds Output Voltage: 5.25V ±0.5V Weight: 18g UBEC-7A Specifications: Operating Voltage: 5.5V-35V Lipo 2S-8S Continuous Current: 6A Peak Current: MIN 7.5A for 20 seconds Output Voltage: 5.25V ±0.5V Weight: 18g UBEC-15A Specifications: Operating Voltage: 6-12S (23-45V) Continuous Current: 15A Peak Current: 30A/10 seconds Dimensions: 55x28x5mm Weight: 36g Package Includes: 1x Receiver Power Supply