Making design-related mistakes early in the process can lead to delays in launching or delivering the result. Here are some of the dos and don’ts associated with designing flex PCBs. What can you do to become a better designer of PCBs? You know all the fundamentals of creating flexible printed circuit boards. Now, you want to go beyond and increase your proficiency and competency. You want to accomplish great things and add your name to the list of the legends in the world of PCB creation. So, what will you do to become one of those PCB design professionals? 1. Mock-up services: You should take advantage of mock-up services while designing a multiple flexible circuits. Mock-ups help in verifying the fit and feel of the design layout and its mechanical concept. Dos – Use mock-ups to ensure that your design fits into the project. Don’ts – You mustn’t design a part without checking it to ensure that it fits correctly in the final installation. 2. Matching the data and drawings: Mismatches between the data and drawings can lead to significant launch delays with a multiple flexible circuits. Even the smallest errors can lead to problems. That is why you should make sure to check your drawings against data dimensions. Dos – You must be extra cautious while checking the data and associated drawings. They should match perfectly. Don’ts – You should never submit data and drawings without checking whole schedules for appropriate counts, drawing-to-data dimensions and radius callouts, and notes for line width and spacing requirements. 3. Stress risers: A stress riser points to the deficiencies in designs. These may cause failures or crack copper traces. If you know how to avoid stress risers, then you won’t experience delays in producing PCBs. Dos – You must keep the circuit paths perpendicular to the bend while balancing the construction on either side of the neutral bend axis. Don’ts – You should refrain from placing components on via in the flexible zones. You shouldn’t make angular transitions among circuit routings either. 4. Heavy copper designing: If the copper that you use weighs more than 2 oz./square feet, then the impact of line loss at the etching points becomes more challenging. While running the CAM operation, you should add etch loss compensation into the line width to assure that the part will meet the line width requirements of the device in which you will install the PCB. Dos – You have to make sure that the master artwork has nine to ten mils of available spacing on a two-ounce layer. Don’ts – You must never design without considering the five-mil minimum spacing requirement after the etch compensation CAM feature. 5. Consistency of the surface finish: Defining the areas of selective surface finish and selective plating are two important concepts of the design process. You have to ensure that the surface on one side of a plated-through hole is the same as the opposite side. Dos – You have to make sure that the same surface exists on one side of the plated-through hole is the same on the other side. You should also check to see if the surface finish on one side is similar to the other side or not. Don’ts – You should never design with nickel or gold finish on one side of the plated-through hole and solder on the other. You mustn’t create PCBs that don’t have solder mask coverage or clearance on one side of the plated-through hole that is different from the other side. To end Here are some of the best practices of designing flexible printed circuit boards. If you follow this guideline, you will surely enlist your name among the best in the business.