SMT was developed in the United States in the middle of the 20th century. At that time, it was mainly used in cutting-edge products and investment products such as military, aviation, and aerospace. With the advancement and development of science and technology, SMT PCB has rapidly spread to various industries such as computers, military, communications, consumer electronics, and industrial automation. SMT patches are developing rapidly and are a very popular new generation of electronic assembly technology in the world. Being able to develop at such a high speed will ultimately benefit from the advantages of the SMT PCB patch itself. Let’s take a look today!
1. High assembly density, light weight and small size of electronic products
Compared with traditional perforated components, the quality and area of chip components are greatly reduced. Generally, 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 mounted on the PCB surface, 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.
Because the electronic components reduce the influence of the lead distribution characteristics, and the PCB surface is firmly attached to the PCB surface, the parasitic inductance and parasitic capacitance between the leads are greatly reduced, so the radio frequency interference and electromagnetic interference are greatly reduced, and the High frequency characteristics.
4. Improve production efficiency, easy to realize automation
Compared with THT, SMT is more suitable for automated production. THT requires different inserting machines (DIP inserting machine, axial inserting machine, radial inserting machine, taping machine, etc.) according to different components. Each machine needs to adjust the assembly time, and the maintenance workload is large. However, SMT only uses one placement machine with different placement heads and racks to install all types of electronic components, 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 reduces 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 materials, omit bending and trimming processes, and reduce manpower and equipment costs. The improvement of frequency characteristics reduces the cost of radio frequency debugging. The size and weight of electronic products are reduced, which reduces the cost of the whole machine. The welding reliability is good, so that the repair cost is reduced. Therefore, after general electronic products adopt SMT patch technology, the total product cost can be reduced by 30%-50%.
With the development of science and technology becoming more and more violent, SMT pcb manufacturing patch technology is also making steady progress in the expectations and research of everyone, and it can gradually develop towards higher speed, lower cost and smaller size!