The Mamba MK4 F405 + F40 BLS is a combination of a FC and ESC, especially suitable for a stack for smaller 2-4" copters or 5" ultralights.
The Mamba MK4 F405 FC uses an STM32F405 processor, has 16MB of blackbox memory, a barometer, 6 UARTs, an I2C port for connecting a magnetometer, 6 outputs for motors, a TVS diode, a 5V and a 9V BEC, where the 9V BEC can also be switched with a connector for connecting DJI FPV . Compared to other boards, the Mamba MK4 series has large soldering surfaces. This makes the construction and maintenance of the drone a little easier.
The stack is complemented by an F40 ESC that uses BlHeli_S firmware. The ESC contains a current sensor. The maximum current of the ESC is 40A per channel, thanks to which it can easily handle 2205 and similar motors. When using a 6S battery, a capacitor must be connected. For better heat dissipation, the ESC has an aluminum radiator. It also protects sensitive components from mechanical damage and dirt.