Function One: Preventing Signal Interference The main function of shielding covers on PCB boards is to prevent signal interference. In complex electronic devices, signal transmission is easily disturbed by the surrounding environment, which may come from other electronic devices, cables, power sources, etc. Shielding covers isolate these interference signals to ensure the reliability of the entire circuit system. In high-frequency or precision circuits, interference signals can easily cause the entire circuit to fail. Therefore, the role of shielding covers must be considered when designing these circuits.

Function Two: Protecting Components In addition to preventing signal interference, another important function of shielding covers on PCB boards is to protect components. Most electronic components are very fragile and susceptible to external damage. Shielding covers made of metal materials can effectively protect components, preventing mechanical damage or damage from discharge. The metal texture of shielding covers provides toughness and impact resistance, enhancing the reliability of the entire circuit board.

Function Three: Improving Circuit Performance In addition to the above two main functions, another notable role of shielding covers is to improve circuit performance. Since shielding covers effectively isolate interference signals, they can reduce the noise level of the circuit system. This means that the signal-to-noise ratio of the circuit will be significantly improved, thereby enhancing the overall circuit performance. Furthermore, shielding covers can effectively reduce leakage capacitance and inductance of the circuit board. Mutual interference between circuit boards can cause these effects, which shielding covers can prevent. Since leakage capacitance and inductance affect circuit performance, reducing these effects can effectively improve the performance of the entire circuit system.