What is The Secret of Color in PCB Solder Mask? (Part 1.)

Today, we will learn rest 5 key reasons behind green solder mask PCB supremacy.

1. Economies of Scale: The concentrated mass production of green ink by manufacturers further solidifies its price advantage, creating a virtuous cycle.

2. Optimal Performance in Yellow Rooms: Several PCB processes require a yellow light environment. Green PCBs offer the most comfortable and clear visual experience under yellow light, aiding operator observation.

3. SMT Automation Friendly: During assembly, optical positioning systems need to recognize the board. Green provides the most stable light reflection characteristics, facilitating precise equipment calibration and improving placement quality.

4. Environmental Friendliness: Discarded green PCBs do not release toxic gases during high-temperature recycling processes, making them more environmentally compliant.

5. Risk Mitigation: In contrast, some dark colors like black and blue, which are doped with cobalt or carbon particles, potentially carry a higher risk of short circuits. Their dark backgrounds also significantly increase the difficulty of post-production inspection and rework, demanding stricter process control.

In conclusion, green has earned the consistent trust of engineers and manufacturers alike through its comprehensive and well-balanced advantages.

In our next article,we will learn “Does Solder Mask Color Affect PCB Performance?”