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Why to use SMT technology in PCB assembly

2020-05-30

Why to use SMT technology in PCB assembly:

 

The pursuit of miniaturization of electronic products, the previously used perforated plug-in components have been unable to shrink.

 

The functions of electronic products are more complete, and the integrated circuits (ICs) used have no perforated components, especially large-scale, highly integrated ICs, and surface mount components.

 

Mass production of products, production automation, the factory must produce high-quality products at low cost and high quality to meet customer needs and strengthen market competitiveness.

 

It is a type of surface-mounted components without leads or short leads (referred to as SMC / SMD, referred to as chip components in Chinese) mounted on the surface of a printed circuit board (PCB) or other substrates. Circuit assembly technology for soldering and assembly by reflow soldering or dip soldering.


 

SMT pcb assembly manufacturers will be involved in: public safety, medical and health care, smart home, smart wear, 4G communication, remote intercom, sports training, mobile hardware, automotive smart accessories, smart property and other electronic circuit boards required by the industry After the device placement, plug-in post-welding and other processes are completed, the product's function and intelligence will be realized.


SMT are mainly mounted: chip resistors, chip capacitors, chip inductors, chip transformers, chip cards, chip exclusion, chip BGA, chip IC, and other components on the PCB.

 

The main technological composition of PCBA manufacturers:

 

Printing (red glue / paste)-> inspection (optional AOI automatic or visual inspection)-> placement (first small device and then large device: high-speed patch and integrated circuit placement)- > Inspection (optional AOI optical / visual inspection)-> Welding (using hot air reflow soldering)-> Inspection (can be divided into AOI optical inspection appearance and functional testing inspection)-> Maintenance (use tool: welding Taiwan and hot air de-soldering station, etc.)-> Sub-board (manual or sub-board machine for cutting). 


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