
Unmanned aerial vehicles (UAVs) are complex aerospace platforms integrating precise flight control, multi-axis propulsion, and beyond-line-of-sight communication. To address the extremely high induced surges generated by the electronic speed controller (ESC) during high-frequency commutation and high-current drive, and the susceptibility of GNSS and image transmission antenna interfaces to electrostatic discharge (ESD) and induced lightning strikes outdoors, we offer high-energy transient overvoltage suppression and extremely low insertion loss signal protection solutions. These solutions effectively prevent system restarts caused by motor back EMF, ensure the purity of navigation and data transmission links in complex electromagnetic environments, and guarantee uninterrupted stability during every takeoff, landing, and mission execution.