Q. What size are Flex boards?

Difference between bending and breaking and rigidity When compared to rigid boards PCB arrays tend to be more compact. This is because polyimide materials tend to have wider dimensional tolerances and intrinsic manufacturing tolerances. In the United States the standard panel size is 18 inches by 24 inches. After that they are sliced down to 9 by 12 inches or 12 by 18 inches. Rolls of offshore materials typically measure 250mm in width and 50–100mm in length. This causes variations in panel size availability across geographic locations. Panels made offshore can be tailored to the specific dimensions of a certain part or assembly array maximizing material efficiency.