Flat cable
close ·The flat wire is small in size and light in weight, and the flat wire board was originally designed to replace the larger harness wire. In the current cutting edge electronic device assembly board, flat cable is usually the only solution to meet the requirements of miniaturization and mobility. Flat wire (sometimes called flexible printed circuit) is to etch copper circuit or printed polymer thick film circuit on polymer substrate. For thin and light devices with compact and complex structures, their design solutions include from single-sided conductive lines to complex multi-layer 3D assembly. The total weight and volume of the flat wire are 70% less than that of the traditional round wire harness method. The flat cable can also increase its strength by using reinforcing materials or lining plates to obtain additional mechanical stability· The flat cable can be moved, bent and twisted without damaging the conductor, and can comply with different shapes and special package sizes. The only limitation is volume space. Because it can withstand millions of times of dynamic bending, the flat cable can be well applied to the internal connection system with continuous or regular movement, and become a part of the function of the final product. Solder joints on rigid PCB will fail after hundreds of cycles due to thermal mechanical stress. Jenny, product manager of EECX, said: "It requires electrical signal/power supply movement, and some products with small shape factor/package size benefit from flat cable." · Flat cable has excellent electrical performance, dielectric performance and heat resistance. The CEO of LT Electronic said: "The lower dielectric constant allows the rapid transmission of electrical signals; the good thermal performance makes the components easy to cool down; the higher glass transition temperature or melting point makes the components work well at higher temperatures." · The flat cable has higher assembly reliability and quality. The flat cable reduces the hardware required for internal connection, such as solder joints, trunk lines, backplane lines and cables commonly used in traditional electronic packaging, so that the flat cable can provide higher assembly reliability and quality. Because the traditional internal hardware composed of complex multiple systems is easy to have high component dislocation rate during assembly. Ping, Marketing Manager of EECX Electronic Products Division Wu said: "The stiffness of the flat cable is low and the volume is small, which is precisely because the volume of the flat cable plate components is small, so the materials used are less." With the emergence of quality engineering, a thin flexible system was designed to be assembled in only one way, thus eliminating many human errors commonly associated with independent wiring engineering.