With the rapid development of industries such as mobile phones, electronics, intelligence, and communication, it has also led to the continuous growth and expansion of the PCB circuit board industry. People have increasingly high requirements for the number of layers, weight, precision, materials, color, reliability, and other aspects of electronic components.

However, due to fierce market price competition, the cost of PCB board materials is also on the rise. More and more PCB manufacturers are monopolizing the market with low prices in order to enhance their core competitiveness. However, behind these ultra-low prices is the reduction of material and manufacturing costs to obtain them. However, devices are often prone to cracks, scratches, and abrasions, and their precision, performance, and other comprehensive factors have not met the standards, seriously affecting the solderability and reliability of products used.

Faced with a wide variety of PCB circuit boards on the market, identifying the quality of PCB circuit boards can be approached from two aspects; The first method is to judge based on appearance, and on the other hand, to judge based on the quality specifications of the PCB board itself.

Methods for judging the quality of PCB circuit boards:

Firstly, distinguish the quality of the circuit board from its appearance

In general, the appearance of PCB circuit boards can be analyzed and judged from three aspects;

1. Standard rules for size and thickness.

The thickness of the circuit board is different from that of the standard circuit board, and customers can measure and inspect it according to their own product thickness and specifications.

2. Light and color.

External circuit boards are covered with ink, which can provide insulation. If the color of the board is not bright and there is less ink, the insulation board itself is not good.

3. Weld appearance.

Due to the large number of components in the circuit board, if the welding is not good, the parts are prone to fall off, which seriously affects the welding quality of the circuit board. It is very important to have a good appearance, carefully identify, and a strong interface.

Secondly, high-quality products need to meet the following requirements

1. Require that the telephone be easy to use after the components are installed, that is, the electrical connections must meet the requirements;

2. Copper skin is not easily peeled off under high temperature;

3. No additional electromagnetic radiation;

4. The mechanical properties of the surface should meet the installation requirements;

5. High temperature, high humidity, and resistance to special environments should also be taken into consideration;

6. Copper surface is not easy to oxidize, which affects installation speed, and it will break shortly after oxidation;

7. The line width, spacing, and thickness of the circuit board meet the requirements to avoid heating, breaking, and short circuiting of the circuit;

8. The appearance is not deformed to avoid deformation of the shell and misalignment of screw holes after installation. Nowadays, it is all mechanized installation, and the hole position of the circuit board and the deformation error between the circuit and the design should be within the allowable range;

The above are the methods for judging the quality of PCB circuit boards. We would like to remind everyone to keep their eyes open when purchasing PCB circuit boards. When choosing a PCB circuit board, we cannot solely consider the price, but should pay more attention to the product's soldering and durability, and make the purchase based on meeting the basic quality conditions. Everything needs to compare prices, services, manufacturer qualifications, customer evaluations, and other factors to make a comprehensive judgment, and choose a manufacturer with strength, qualification certificates, and quality assurance in all aspects.