What is the difference between flexible circuit boards and rigid circuit boards?

According to the materials used, printed circuit boards can be divided into rigid printed boards and flexible printed boards.



Rigid circuit boards include phenolic paper laminates, epoxy paper laminates, polyester glass felt laminates, and epoxy glass cloth laminates.



Flexible circuit board, also known as FPC and flexible board, is characterized by high wiring density, light weight and thin thickness. It is an excellent flexible printed circuit board with high reliability.



Flexible circuit boards are widely used in the electronic computer, communication, aerospace, and home appliance industries.



What are the differences between flexible PCB circuit boards and rigid circuit boards in PCB sampling?



1. Current carrying capacity of wires: Compared with rigid circuit boards, flexible circuit boards have relatively poor heat dissipation performance. Because the heat dissipation of the flexible circuit board is considered, additional width or spacing needs to be left for the wires.



2. Shape. In general, choosing a rectangle can effectively save on the substrate, and there should be sufficient available margin near the edges. Sharp internal corners may cause the board to tear. Therefore, the width and spacing of FPC wires should be minimized, and the transition must be as smooth as possible. Sharp corners naturally concentrate stress and lead to wire failure.



3. Flexibility: The flexibility of rigid circuit boards cannot be compared to that of flexible circuit boards. For a large number of bending cycles, flexible circuit boards have better performance.



The above is the difference between rigid circuit boards and flexible circuit boards.



Rigid-Flex PCB



In PCB sampling, both flexible circuit boards and rigid flexible combination boards belong to special processes, which have certain technical thresholds and production difficulties. Jieduobang can produce PCB samples for flexible circuit boards and rigid flexible combination boards to meet customers' diverse PCB sampling needs. Currently, in flexible circuit boards, Jieduobang can make 1-8 layers; Plate thickness 0.06-0.4mm; The minimum line width/spacing for single and double layers is 2mil, and the minimum line width/spacing for multiple layers is 3mil; Copper thickness is 0.33-2oz. In the rigid flexible combination board, 2-8 layers can be made; The minimum size can reach 50 * 60mm; The maximum size can reach 238 * 440mm; Plate thickness 0.4-2.0mm; Copper thickness 0.33-2OZ. Welcome customers to come and experience.