How to correctly determine the number of PCB connected boards?

PCB manufacturers and PCB designers will explain how to correctly determine the number of PCB boards.

Advantages of "Yin Yang board" Combination for PCB

Generally speaking, after the design engineer has determined the appearance of the printed circuit board, he should immediately proceed with the work of plywood/splICing/panelization of the circuit board. The purpose of connecting plates is to increase the output of the production line and reduce the loss of plates.

The most common connecting board usually combines two or more identical circuit boards into a large circuit board, such as 2 in 1 (two in one), 3 in 1 (three in one), 4 in 1 (four in one), etc. There are also cases where different shapes of circuit boards can be combined into a large board, but this is rare because Planner is difficult to match just a number of different boards when arranging production.

There are also examples of using the same board as a "yin and yang board". "yin and yang board" mostly means a top and bottom configuration, which is usually used on circuit boards with few parts, such as mobile phone boards, because it can make full use of the SMT's long line board beating function to increase efficiency, but the disadvantage is that there are restrictions on use, and it may cause uneven heating of parts, For example, some circuit boards will focus on the design of a certain side of the heavier parts, and then this side will be used as the second printing to prevent the heavier parts from falling off when reflow soldering is repeated. Of course, it is difficult to use the design of "yin and yang" for such boards.

Some boards may have heat absorbing parts (such as a large ATM card reading slot), and are not suitable for the design of "Yin Yang board". Of course, there are also flexible "Yin Yang Board" methods to overcome this problem, but I won't discuss it here.

Basically, the following factors should be taken into consideration when designing the number of boards. In fact, no matter how much the board is produced or designed, it is ultimately inseparable from the consideration of money. Therefore, all the factors should be converted into the amount as the final measurement standard to select a suitable board splicing method.

PCB manufacturers and PCB designers will explain how to correctly determine the number of PCB boards.