SMT Assembly Line

• What is SMT assembly?

SMT, short for Surface Mount Technology, refers to a type of assembly technology to stick components (SMCs, Surface Mount Components, or SMDs, Surface Mount Devices) to bare PCBs (Printed Circuit Boards) through the applications of a series of SMT assembly equipment.

SMT Assembly Line-OBSMT

• What equipment is applied in SMT assembly?

Generally speaking, the following equipment is applied for SMT assembly:

SMT Loader Unloader(Recommend Model:OB-L708、OB-UL718  )

Solder paste printer(Recommend Model:OB-CL400 、OB-GSE-01)

Conveyor(Recommend Model:OB-C608 、OB-C608B)

Pick and Place machine(Recommend Model:RS-1)

Reflow soldering oven(Recommend Model:HS-0802-LF 、OB-660-PC )

AOI (Automated Optical Inspection) instrument and so on.

OUBEL-Auto SMT production line(Single Rail)

• How is SMT assembly different from THT assembly?

SMT assembly is different from THT assembly in the following aspects:

• Components applied for THT assembly feature longer leads than those for SMT assembly;
• THT assembly calls for drilling holes that should be drilled on bare circuit board while SMT assembly doesn’t since SMCs or SMDs are directly mounted on PCB;
• Wave soldering is mostly applied in THT assembly while reflow soldering is mostly applied in SMT assembly;
• Automation can be expected in SMT assembly while THT assembly just depends on manual operation;
• Components for THT assembly are heavy in weight, tall in height and large in volume while SMCs can help to reduce more space. 
  

  OUBEL-SMT Assembly Line

  

  OUBEL-DIP Line

   

• Why is SMT assembly widely applied in electronics manufacturing?
• First, current electronic products have been striving for miniaturization and light weight, which is difficult for THT assembly to reach;

  Second, to lead electronic products to be functionally integrated, IC (Integrated Circuit) components are leveraged to such a high extent to be compatible with large scale and high integrity requirement which is just what SMT assembly enables to do.

  Third, SMT assembly adapts itself to volume production, automation and cost reduction all of which meet the demands of electronics market;

  Fourth, SMT assembly is applied to better promote the development of electronics technology, ICs and multiple applications of semiconductor materials;

  Fifth, SMT assembly conforms to international electronics manufacturing standard.

• In which field of products is SMT assembly used?
• Currently, SMT assembly has been applied in advanced electronics products, especially those belonging to computer category and telecommunication.

  Furthermore, SMT assembly has been used in the products from all fields, including medical care, automotive, telecommunication, industrial control, military, aerospace etc.

• What requirement has to be met in terms of SMT assembly workshop?
• The fundamental requirement an SMT workshop has to meet is demonstrated as below:

  Room temperature: 25±3℃ (if it can’t be obtained, temperature control equipment is needed);

  Room internal height: 3 meters;

  Room RH (Relative Humidity): 45% to 75% (if it can’t be obtained, humidity control equipment is needed);

  Electrostatic requirement: 150KR±10% (static grounding is needed).

• More SMT Line Scheme:
  

  OUBEL-Dual Rails Auto SMT production line

  

  OUBEL-Auto SMT production line (2 in 1 dual rail reflow oven)

  

  OUBEL-Auto SMT production line ( 3 in 1 dual rails reflow oven )