1. Definition and composition of PCBA: PCBA refers to the assembly of electronic components on a printed circuit board (PCB) through welding and other processes to form a circuit board assembly with electrical functions. PCBA consists of three parts: PCB, electronic components and solder. PCB serves as a support, electronic components include integrated circuits, resistors, capacitors, etc., and solder is used to connect components to the PCB.
2. Manufacturing process: The manufacturing process of PCBA includes multiple steps such as SMT (surface mount technology) and DIP (through-hole insertion technology). This process involves carrier board, printing, patch, reflow soldering, plug-in, wave soldering, testing and quality inspection. With the development of technology, PCBA production has achieved high automation and intelligence, and production efficiency and quality control have been greatly improved.
3. Difference from PCB: PCB is a bare board without electronic components, while PCBA is a complete assembled board with electronic components installed on the PCB. PCB provides the basis for the placement of electronic components, while PCBA assembles these components together so that they can work together to realize the functions of electronic products.
4. Market size and application areas: The global PCBA market size is expected to continue to grow, and the market size of China's PCBA electronic manufacturing service industry is expected to reach 406.1 billion yuan in 2023. PCBA has a wide range of applications, including communications and network equipment, consumer electronics, industrial automation and control systems, medical equipment, automotive electronics, energy and power equipment, military and defense, etc.
5. Technological development and future trends: The future development of PCBA will pay more attention to green, efficient and intelligent. Green production will become an important direction to reduce the generation of electronic waste and environmental pollution. At the same time, PCBA production lines will be more intelligent, and production efficiency and quality will be improved by introducing technologies such as automation, machine learning and industrial Internet. In addition, PCBA technology will also face higher technical challenges, such as high-density packaging, high-frequency signal transmission, etc., which need to rely on advanced materials and processes to solve.
