Correct option is A
Conformal coating is applied to a printed circuit board (PCB) to protect it from moisture, chemical pollutants, and other environmental factors.
Explanation:
Protection
Conformal coating shields the PCB from moisture, dust, dirt, and other chemicals. It also protects against oxidation, ultraviolet light, and abrasive materials.
Insulation
Conformal coating has thermal and electrical insulation properties.
Lifespan
Conformal coating extends the life of the PCB and reduces the failure rate of components.
Reliability
Conformal coating improves the reliability of the device and reduces the cost of replacing hardware.
Application
Conformal coating is applied to the PCB by brushing, dipping, spraying, or flow coating.
