PCB Flex and Rigid Classification
PCB is divided into rigid circuit board and flexible circuit board, rigid-flex PCB board. The intuitive difference between rigid PCB and flexible PCB is that flexible PCB can be bent.
The common thickness of rigid PCB is 0.2mm, 0.4mm, 0.6mm, 0.8mm, 1.0mm, 1.2mm, 1.6mm, 2.0mm, etc.The common thickness of flexible PCB is 0.2mm, where the parts to be welded will be thickened, the thickness of the thickened layer will vary from 0.2mm to 0.4mm. The purpose of understanding these is to provide structural engineers with a spatial reference when they design.
Rigid PCB materials include: phenolic paper laminate, epoxy paper laminate, polyester glass felt laminate, epoxy glass cloth laminate; flexible PCB materials include: polyester film, polyimide film, ethylene propylene fluoride film.
Copper foil laminate is the base material of printed circuit board. It is used to support various components and can realize electrical connection or electrical insulation between them.