1. Dust and impurities may enter the components and connectors on the board, leading to circuit shorts or failures.
2. Dust may accumulate on sensitive components, affecting their normal operation and leading to performance degradation or failure.
3. Dust can prevent heat from escaping from the board, causing overheating problems and even fire risks.
4. Dust may cause signal interference on the board, affecting the stability and reliability of the circuit.
It is therefore important to provide proper dust protection for PCBAs to ensure proper operation and reliability.