Question: what is the difference between ipc-610 class 2 and class 3?
Answer: Class 2 is for dedicated service electronic products. This means that you expect the board to have an extended life so you can place it in a television, a computer, or an air conditioner. Class 3 PCBs are tighter in tolerances as opposed to Class 1 and Class 2 boards. ... It is the highest class for printed circuit boards.