Take apart any electronic device, and you’ll likely see a green-coated PCB. Most people think that green’s just for style—but it’s actually the PCB’s protective layer, and picking green boils down to practicality, not looks.It’s Not Decoration—It’s the PCB’s “Safety Shield”The green layer (called a

Think about household PCBs—like the one in your router. After 2 years, they often have loose parts or broken solder joints. But automotive PCBs? They’re exposed to daily vibrations and crazy temp swings (-30°C to 120°C) and still work steadily for over a decade. It’s not that they’re “naturally toug

Remember the PCB base material and copper foil thickness we talked about in Part 1? These two factors lay the groundwork for a PCB’s “durability” and “power stability.” Today, we’re diving into the other two crucial points—layer count selection and surface finish—which directly impact a PCB’s “pract

The Color Conundrum: Does Solder Mask Color Affect PCB Performance?A frequent question when selecting a PCB color is: Does it affect the board's performance? The answer is nuanced: For a fully qualified finished PCB, different solder mask colors have virtually no direct impact on its electrical perf