Analyze the difference between flexible circuit board and rigid circuit board
According to the material made, printed circuit boards can be divided into rigid printing board and flexible printing board.
Rigid circuit boards include phenolic paper laminate, epoxy paper laminate, polyester glass felt laminate and epoxy glass cloth laminate.
Flexible circuit board is also known as FPC, soft board, with the characteristics of high density, light weight, thin thickness, is a highly reliable, excellent flexible printed circuit board.
Flexible circuit boards are widely used in computer, communications, aerospace and household appliance industries.
In PCB proofing, what are the differences between flexible PCB circuit board and rigid circuit board?
1 wire load: compared with the rigid circuit board, the heat dissipation performance of the flexible circuit board is relatively poor. Because the heat dissipation of the flexible circuit board is taken into account, extra width or spacing is needed for the wires.
2. Shape. In general, choosing a rectangle saves the substrate well, and there should be enough margin available near the edges. Sharp inside corners may cause the board to tear. Therefore, FPC wire widths and spacing should be minimized, and transitions must be as smooth as possible. Sharp corners naturally concentrate stress and cause lead failure.
3 flexibility: the flexibility of rigid circuit board can not be compared with the flexible circuit board. Flexible circuit boards have better performance for a large number of bending cycles.