Semi-Flex PCBs vs. Flex PCBs
When choosing PCBs that can bend into place, electrical engineers have a choice between using flex and semi-flex PCBs. Following is a basic overview of how these two types of PCBs differ and their uses in modern electrical devices.
PCB Button Plating – what is it, when and why is it needed?
The term button plating refers to the visual aspect of the final product. If you were to look at the cross-section, you would see your flat surface and then you would have what looks like buttons as the PTH is slightly raised from the other copper features.