What are the factors that affect FPC life

FPC line has good flexibility, good bending, length can leave a margin, there is no need to completely precise calculation.  If the design is too long, it can be reduced gradually according to the analysis results after the sample is made and the folding experiment is done.  Pin number is naturally to do wide, or use double panel to replace single panel to reduce width, of course, FPC line thickness is bound to increase.  The pin line width and PIN spacing are also different according to the strength of the manufacturer. At present, the minimum manufacturer can do 0.1mm.  

Due to the limitations of the thickness of the whole phone, the rotating shaft and the FPC hole of B/C parts, the width of the FPC line is generally designed to be 3 or 3.5mm (if 3.5mm, the distance between the lines on both sides of the EDGE of FPC is 0.4mm respectively, according to the line width and line spacing FPC is 0.1mm, so as to calculate,  Each layer can be about 13 wires), the thickness is 0.2 or 0.3mm (FPC is 2+2 or 3+2 structure).  

When designing the FPC shape, we should pay attention to the clearance with B/C parts and through holes.  In the case that the thickness and strength of B/C parts have been met, try to leave more space for FPC. Because FPC needs to pass through these places and swing with the opening and closing of the phone clamshell, and FPC itself is fragile, this place is also the place where FPC is most likely to have problems, and it is easy to scrape FPC with the shell.  Not only will there be sound when the clamshell rotates, but also the FPC will break over a long time and affect the life.  

FPC circuit board high current connector in addition in the pipeline installation is also essential;  Root, compose of the mother, also called the root collar, lock nut, with a short for thread at one end, on the other side for filament no tip degrees (roots) of the short section and a root, add a wall to harness the pipe hoop of the filament, its action with the union, used as a detachable connection, when used in radiator fills the heart, harness pipe hoop also saves;  Flange plate, left and right two pieces of a pay, with the function of the joint.  Specifications for caliber D50mm or more, because of the large size of the valve at both ends of the flange interface, so the flange is also used for pipeline and valve connection.  

The design of this place is the key to the design of Po Li Peak.  Finally, WE hope that when designing FPC with Pro/E, use sheet metal module instead of using part-solid module, because in sheet metal module, FPC can make the most close to the actual situation of FPC shape, bending and flattening are easy, and easy to modify, can truly simulate the theoretical real position of FPC in the hole.