The quality problems of circuit boards generally include circuit short circuit, open circuit, green oil blistering, green oil falling off, red text, substrate layered board warping, pad falling off, poor tinning, and circuit board open circuit after aging, etc. . The root cause of these common circuit board quality problems is that the production process of the circuit board factory is not up to standard, the production equipment is backward, the selection of raw materials is poor, and the management is chaotic.
Reason 1: The choice of PCB raw materials is cheap and inferior. The quality of raw materials is the cornerstone of the quality of the circuit board. If the material itself is not good enough, the circuit made will have blisters, delamination, cracking, uneven thickness, etc. What is relatively hidden now is that some circuit board factories use mixed materials, some of which are genuine sheet materials and some are edge materials, in order to dilute the cost. The hidden danger of doing this is that it is not known which batch will have problems. Due to the different use characteristics of circuit boards, some circuit boards do not have high requirements, so some side materials do not show obvious problems when used in this situation, which makes many circuit board factories get away with this practice and at the same time because of the price Low price has also won the favor of customers. It also encourages the circuit board factory to continue to take such risks. In the long run, if there is a problem with the base material that leads to quality problems in the finished product, it will often result in huge losses and sometimes irreparable reputation and brand of the company. This is also the reason why regular circuit board manufacturers will not do this.
Reason 2: The circuit board production equipment is backward. The equipment is to ensure the quality from the hardware, increasing the investment in the equipment, and making the equipment efficient and stable is the fundamental way to improve the quality of the circuit board. With the advancement of science and technology, the replacement of circuit equipment is getting faster and faster; the equipment is getting more and more advanced, and of course the price is getting more and more expensive. As a result, some small circuit board factories have no ability to add more expensive equipment, which leads to increased dependence on employees. The current labor cost is inherently high. Once the dependence on skilled and skilled employees is formed, the management difficulty of the circuit board factory will be greatly increased. Once there is a flow of personnel, the quality of the circuit board will fluctuate.
Reason 3: The circuit board production process is not up to standard. Circuit board production is an industry with relatively high technological content, involving a series of interdisciplinary subjects such as electroplating, chemical machinery, etc. Each process of circuit board production must be implemented in accordance with strict production processes, and each process must be equipped with corresponding testing and testing equipment. These process parameters and equipment can ensure the stability of circuit board quality. It is undeniable that the circuit board industry is also a polluting industry. Many practitioners and even the bosses who enter this industry are half-way monks, so many small circuit board factories only care about the price as long as the cost can be kept down, and they don’t care at all about the production process and the quality of the circuit board. . The concentration of the chemical solution in the electroplating process is a parameter that changes at all times. Different types of circuit boards have different currents and time in the electroplating process. These parameters are combined to affect the quality of the circuit board. Only strict production process guidance, production according to process parameters, and continuous laboratory inspection can ensure that the quality of the produced circuit boards is always stable. If there are quality problems in the organization of production based on experience, and the potion is added based on feeling, this will directly lead to the quality of the circuit board fluctuating all the time. Customers using this circuit board will have a high repair rate and low yield. On the surface, it seems that the purchase cost of the circuit board In fact, the maintenance cost of repair and repair is greatly increased, and the customer's brand is affected, which is not cost-effective in the long run.
Reason 4: Management chaos. The production process of circuit board factories has many cycles and long periods. How to realize scientific and orderly management while reducing management costs is a difficult problem. It is to manage well, manage well and manage cheaply, which requires long-term accumulation of circuit board manufacturers. With the advancement of science and technology, especially the development of the network, it becomes possible to manage the traditional circuit board factory with the help of network informatization. A breakthrough in this area can form the core competitiveness. In a factory with poor management, the quality of its circuit boards will naturally fluctuate frequently, and various problems will emerge in endlessly and repeatedly.
To sum up, the problem of circuit board quality is a very serious problem. It is also the result of long-term efforts of the circuit board factory in management; integrity, investment and absorption of new technical means.
