In PCB manufacturing, the smallest details can make a huge difference. One effective way to prevent warping, twisting, or stress-related defects is by using non-functional pads.
When should you use them?
When your design includes components sensitive to process conditions, such as BGA
How do they help?
– stiffen the PCB structure,
– ensure even heat distribution in the reflow oven, reducing the risk of shorts under complex components,
– minimize thermal stress during cooling, preventing defects like cold solder joints in the final product.
See the images below:
📷 (1) PCB without non-functional pads
📷 (2) PCB with non-functional pads
