PCB Technical - SMT chip processing advantages

1. Electronic products have high assembly density, light weight and small size

Compared with traditional perforated components, the quality and floor space of chip components are greatly reduced. Generally speaking, the use of SMT patch technology can reduce the quality of electronic products by 75% and the volume by 60%.

2. Strong anti-vibration ability and high reliability

Because the electronic components have short or no pins and are firmly attached to the surface of the PCB, the SMT patch has strong anti-vibration ability and high reliability. The solder joint defect rate of SMT patch is one order of magnitude lower than THT.

3. Good high frequency characteristics

Because the electronic components reduce the influence of the lead distribution characteristics and are firmly bonded to the PCB surface, the parasitic inductance and parasitic capacitance between the leads are greatly reduced, thereby greatly reducing radio frequency interference and electromagnetic interference, and improving high-frequency characteristics.

4. Improve production efficiency and easily realize automation

Compared with THT, SMT is more suitable for automated production. According to different components, THT requires different inserters (DIP inserter, axial inserter, radial inserter, weaving machine, etc.). ), and each machine needs to adjust its own assembly time, resulting in heavy maintenance workload. However, SMT only needs one placement machine and different placement heads and racks to install all types of electronic components, thereby reducing maintenance workload and adjustment preparation time.

5. Reduce costs

The SMT patch increases the PCB wiring density, reduces the area, reduces the number of holes and the number of PCB layers with the same function, all of which reduce the manufacturing cost of the PCB. Components with short leads or no leads save lead material, omit bending and wire cutting processes, and reduce labor and equipment costs. The improvement of frequency characteristics reduces the cost of RF debugging. The size and weight of electronic products are reduced, which reduces the cost of the whole machine. The welding reliability is good, and the maintenance cost is reduced. Therefore, after adopting SMT patch technology in general electronic products, the total product cost can be reduced by 30%-50%.

With the maturity and development of technology, SMT patch technology will also develop in the direction of miniaturization, higher speed, and lower cost.