The rigid and flexible composite Flexible Printed Circuit is called a rigid-flexible FPC. It meets the needs of today's electronic products to the development of high density and high reliability, miniaturization and lightweight. High-quality FPC meets strict economic requirements, and the needs of market and technology competition. Because the flexible foil can be continuously supplied in reel form, continuous production of FPC board can be achieved. This also helps reduce costs.
A significant advantage of using an FPC board is that it can be more easily traced, installed and connected in 3D space, and can also be curled or folded for use. As long as the curl is within the allowable radius of curvature, it can withstand thousands to tens of thousands of uses without being damaged. Use FPC board install and connect, they eliminated errors when carry out the wiring use wire and cable. As long as the processing drawings pass through the proofreading, all later produce circuits are the same. No misconnection occurs when mount connection line.
In the same volume, compared with the wire and cable, the FPC board can reduce the weight by about 70% under the same current-carrying capacity, compared with the rigid PCB, the weight is reduced. When FPC board is used to connect, it can be laid on the three planes of X, Y, Z, which reduces the change-over and interconnection, increases the reliability of the entire system, and provides convenience for the inspection of faults.
According to the application requirements, the designer can control the capacitance, inductor, characteristic impedance, delay, and attenuation when designing the FPC board, can be designed to have the characteristics of the transmission line. Because these parameters are related to wire width, thickness, spacing, insulation thickness, dielectric constant, loss tangent, etc., this is difficult to achieve when using wire and cable.
The FPC board like the rigid PCB, has terminal pads that eliminate wire stripping and tinning, which saves costs. For example, polyester films can be used in applications requiring low cost. In demanding applications, excellent performance is required and polyimide films can be used.
The use of FPC boards can reduce the overall cost. This is due to the consistency of various parameters of the wires of the FPC board, can be directly connected to the components, reducing the cable clamp and their fixed parts. For shielded conductors, use FPC board price is lower.