The appearance of the aircraft tablet computer is lighter and more fashionable, but it does not affect the performance experience at all. On the contrary, the functions become more powerful and rich. The rapid replacement and iteration of these electronic products are all due to the fact that their internal components are becoming smaller and highly centralized, but at the same time, it also brings higher risks of internal components being subjected to electrostatic surges and more easily damaged. Adding electrostatic surge protection devices is crucial in circuit design.