How to choose component-to-edge clearance while designing PCB?
When designing my PCB Boards i normally see that most manufacturers always say we should give a certain amount of space for copper and Board Edge Clearance. What is the main purpose of giving the space, how does it affect the design.
3 Replies
Giving a certain amount of clearance space helps the pcb manufacturers to avoid damage to the copper during the profiling operation. This helps to reduce risk. The machines used has certain amount of tolerance, so the fab house will always tell designers to follow their design capabilities so the board can be manufactured without error.
Yes , very true @Joseph Ogbonna and also in addition to preventing damage during the manufacturing process, providing clearance space around copper on PCBs also aids in minimizing the risk of signal interference or crosstalk between adjacent traces. This spatial separation helps maintain signal integrity and overall reliability in electronic circuits, ensuring optimal performance of the final product.
@Umesh Lokhande The semi-additive PCB manufacturing process is mostly a chemical magic. Those liquids need some space to make their job. Plus the finishing of the PCB (V-cutting, cutting) stresses the PCB near the cutting line. You need some space between the nearest copper traces and the PCB edge to protect the traces.