What are the different processes and machines used for entrusting PCB assembly?
Now let's continue discussing the processes and machines involved in entrusting PCB assembly. It is necessary to thoroughly understand the following items in order to know which capabilities to check when discussing with the commissioned PCB assembly supplier.
Application of solder paste
Use a template printing machine to apply solder paste dots onto the PCB. Indirect materials such as solder paste can be purchased by commissioned PCB assembly companies.
Component Placement
The component mounting machine is used to pick up components from the feeder and place them on the circuit board. Due to the fact that the feeder type can be in the form of a scroll or tray, customers must inform the packaging type of the consigned raw materials.
reflow process
Reflux furnace is used to melt solder paste and complete the solidification process. Solder paste manufacturers provide technical data sheets that include recommended soldering curves that PCB assembly personnel can follow during furnace programming.
AoI
The assembled circuit board must undergo automatic optical inspection to check whether the PCB meets good image requirements. The AOI machine used has a built-in vision system equipped with a camera, software, workbench, and lighting, which can capture images of the circuit board.
x-ray examination
The commissioned PCB assembly process also involves X-ray inspection to check for any issues inside the solder paste, such as voids and incomplete coverage that cannot be seen by AOI machines. The X-ray machine can be programmed to find the correct power and current settings for optimal image contrast.
Choosing consignment PCB assembly over other business strategies is not a one-dimensional decision that can be made based on a single standard. The PCB team, consisting of procurement, procurement, engineering, and project management teams, must work together to find the best option based on the company's multiple variables and urgent needs. This article provides further insights into the advantages and guidelines to help evaluate suitable business models for PCB assembly in enterprises
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