PCB News - What role does PCB circuit board play in electronic products?

The functions provided by PCB circuit board to electronic products include:

1: Provide mechanical support for fixing and assembling various electronic components such as integrated circuits.

2: Ensure the quality of electronic equipment, improve labor productivity, reduce costs, and facilitate maintenance.

3: Provide solder mask graphics for automatic soldering, and provide identification characters and graphics for component insertion, inspection, and maintenance.

4: Realize the wiring and electrical connection or electrical insulation between various electronic components such as integrated circuits. Provide the required electrical characteristics, such as characteristic impedance.

5: After electronic equipment adopts PCB circuit boards, due to the consistency of the same type of fast PCB, manual wiring errors can be avoided, and electronic components can be automatically inserted or mounted, automatic soldering, and automatic detection.

Electronic computers, communication electronic equipment and spacecraft, as long as there are electronic components such as integrated circuits, are inseparable from PCB circuit boards for electrical interconnection between them. It can be said that in the development process of all electronic products, especially intelligent electronic products, the basic success factor is the product's PCB circuit board design and manufacturing technology, so the role of PCB circuit boards in electronic products is very important.

6. What issues should be considered in the process of PCB circuit board processing

1. Selection of plates

PCB circuit board plates are divided into two types: organic chemical raw materials and inorganic raw materials. The selection of the plate type should be determined by combining the characteristics of the thickness of the base groove, the electrical performance, the type of copper foil, and the production and processing.

2. Environmental control

The indoor environment of PCB circuit boards in the production and processing workshop is also a very critical issue, and the control of working temperature and humidity is particularly important. Too high temperature may cause the holes in the board to rupture. Secondly, too high humidity will affect the characteristics of the board with strong water absorption ability, which is mainly manifested in the level of dielectric properties. Therefore, it is very important to maintain a standard natural environment during the production and processing of PCB circuit boards.

3. Blockage of plate via hole

For example, PCB circuit board surface mount boards, especially BGA and IC mounting, have relatively high requirements for via hole plugging. They must be flat, convex and concave plus or minus 1 mil, and there must be no red tin on the edge of the via hole. Due to the complicated process of via hole plugging and long process, which increases the difficulty of process control, the oil will drop during the hot air leveling or the green oil solder resistance test, and once it is solidified, problems such as oil explosion will occur. Therefore, we must complete the solder mask and plug hole at the same time.