Why is There a Process Side Reserved for PCB Production?

In the PCB production process, in order to consider the subsequent patches and plug-ins, the process side is generally added, and the purchase cost will also increase. So, what are the benefits of adding this process side? Here is the PCB Assembly Manufacturer. Say something.

In the PCB production process, the reservation of the process side is very important for the subsequent SMT placement processing. The process side is used to assist the soldering of the patch plug-in. The part added on the two or four sides of the PCB board is mainly to assist production. It is not part of the PCB board and can be removed after the PCBA manufacturing is completed.

Because the process side will consume more PCB material, it will increase the overall cost of the PCB. Therefore, when designing the PCB process side, it is necessary to balance economy and manufacturability. For some special shapes of PCB boards, the PCB boards with 2 process edges or 4 process edges can be greatly simplified by cleverly joining together. When designing the patching method in the placement process, it is necessary to fully consider the track width of the SMT placement machine. For the patching exceeding 350mm, it is necessary to communicate with the process engineer of the SMT supplier.

The main reason for leaving the process side is that the SMT placement machine track is used to clamp the PCB board and flow through the placement machine, so the components that are too close to the track side suck the components in the SMT placement machine suction nozzle and mount to When the PCB board is bumped, the production cannot be completed, so a certain process edge must be reserved, such as 2-5mm, etc. Similarly, it is also applicable to some plug-in components to prevent similar phenomena after wave soldering.

The flatness of the PCB production process is also an important part of PCB production. When removing the PCB production process side, it is necessary to ensure that the process side is flat, especially for PCB boards with high assembly accuracy requirements. Any uneven burrs will cause the installation hole to shift, which will bring great trouble.

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