In the daily life,maybe you have heard of PCB Assembly. However,do you eally know what it is? Generally speaking,the manufacturing electronic devices process is long and complicated. Silicon or any other semiconductor is basically the starting point for all electronics. Through a number of long processes,at last,smart electronic microprocessors and chips are made. Below mentioned is some information about the PCB Assembly.
Actually,these
chips can't do anything by themselves, and need to be integrated onto a
printed circuit board in order to be able to do something in the end.
Now, there are a large number of companies that design these chips and
sell end-products. However, these companies can't afford to purchase all
the equipment required to assemble their chips onto PCBs in order to
devise their end-product.
The PCB Assembly process consists of a
number of different processes. First of all,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. Secondly,SMT Pick & Place Assembly. This is the heart of
each PCB Assembly line. This process takes all the individual chips and
accurately places them on their designated place on the PCB.
Thirdly,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.
And then,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. 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. 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.
From the above,we
can know that each of these processes is necessary. Even more,each of
these processes is considered a technology field in its own. On the
Internet,there are several specialist manufacturers. H.C.C INTERNATIONAL
LIMITED. is an expert at PCB and PCBA manufacturer and specializes in
manufacturing SS DS and HDI and multilayer PCB. It is honored the
excellent supplier by many large companies both at home and abroad. We
can offer all kinds of service including PCB and PCB assembly sample
order and batch order. If you want to get more information about it,log
on to chinahccpcba.