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 or flexible board, has the characteristics of high wiring density, light weight, and thin thickness. It is a highly reliable and excellent flexible printed circuit board.

Flexible circuit boards are widely used in the fields of electronic computers, communications, aerospace, and household appliances.

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

1. Current carrying capacity of wires: Compared with rigid circuit boards, flexible circuit boards have relatively poor heat dissipation performance. Due to the consideration of heat dissipation in flexible circuit boards, it is necessary to leave a rated width or distance for the wires.

2. Shape. Usually, choosing a rectangle can effectively save the substrate, and there should be sufficient available margins near the edges. Sharp interior angles may cause the board to tear. Therefore, the width and distance of FPC wires should be reduced, and the transition should be as smooth as possible. Sharp corners will naturally accumulate stress and cause lead failure.

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

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

Article source: Jiangmen PCB Customizationhttp://www.yonghongpcb.com/