What color solder mask for PCB?

According to experts in the field, the solder mask is applied to a PCB after the copper traces have been etched onto the board's substrate. The mask is essentially a layer of polymer material that is applied over the exposed copper on the board's surface. It is then cured to create a hard, durable layer that can withstand the high temperatures and harsh chemicals used in the soldering process.

The use of a solder mask offers several benefits, including improved electrical insulation, protection against corrosion and damage to the copper, and overall reliability and longevity of the circuit board. It also makes it much easier to visually inspect the board and identify any potential issues or errors.

There are several different types of solder mask materials available on the market, each with its own unique properties. For instance, some masks are designed to provide extra protection against harsh environmental factors, while others are formulated to be more flexible and easier to apply. In addition, some masks are available in a variety of colors, allowing for greater customization and flexibility in the design process.