Dimart Power Distribution Board PDB 4-Layers PCB with 2 BEC 5V 12V For FPV 250 Racer Mini Quadcopter Drone Power Distribution Board 2oz copper 4-Layers PCB With 2 BEC 5V 12V for Mini 250. ESC & Battery solder tabs in pairs. Solder Bridges of various voltage for Camera & VTX. DC/DC synchronous buck regulator, efficiency is up to 95%. TVS(Transient Voltage Suppressor) protection for DC/DC chip. 5V & 12V 3A Output LED indicators & Short circuit tolerant.