Article

An introduction of PCB assembly

Jan 31, 2018

The PCB assembly process consists of a number of different processes:

1) Solder Paste Printing - During this process the initial solder paste is printed onto the PCB using a stencil. This is basically the binding material of the devices to the PCB.

2) SMT Pick & Place assembly- This is the heart of each PCB assemblyline. This process takes all the individual chips and accurately places them on their designated place on the PCB.

3) Reflow/Through-hole curing - After placing the chips onto the solder paste, the boards go through a conveyor oven to melt the solder and bind the chips to the PCB.

4) Conformal Coating - Some boards require a protective lacquer coating. Conformal "Selective Coating" machines quickly and accurately provide a layer of protective coating on the PCBs.

5) AOI and AXI - Automatic Optical Inspection and Automated X-ray Inspection. These processes are key to confirming that no mistakes have been made during the assembly process

6) Reworking if needed - If any mistakes or defects are found, some devices can be reworked. Reworking consists of heating the board or device, and removing it from the PCB so that a replacement can be placed in its stead.

Each of these processes is a world in its own right and is considered a technology field in its own. There are several specialist manufacturers for each of the these PCB assemblyfields. We are professional manufacturer of PCB assembly. We can customized PCB assembly, full turneky board assembly, PCBA clone, PCBA assembly, PCB fabrication and assembly and so on.

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