How to identify the advantages and disadvantages of PCB circuit boards, many small partners may not be able to make a direct judgment. Today, the editor of PCB manufacturers will show you how to make an intuitive judgment.
The market price of PCB circuit boards has always been fiercely competitive. Affected by this factor, the cost of PCB board materials has also shown a rising trend. In order to improve their core competitiveness, more and more manufacturers are trying to monopolize the market at low prices. However, behind these ultra-low prices, it is obtained by reducing material costs and process manufacturing costs, but devices are usually prone to cracks (cracks), easy scratches, (or scratches), and their precision, performance and other comprehensive factors have not reached the standard. , which seriously affects the solderability and reliability of the product used.
In the face of the various PCB circuit boards on the market, the editor teaches you that when distinguishing the quality of PCB circuit boards, we can start from two aspects. The first method is to judge from the appearance.
Some friends may wonder, how can we judge from the appearance, we have to start from three aspects; first, the size and thickness of the standard, the thickness of the circuit board to the standard circuit board is different, customers can measure Check according to the thickness and specifications of your own products. The second is the light and color of the board. The external circuit board is covered with ink, and the circuit board can play a role of insulation. If the color of the board is not bright and there is less ink, the insulation board itself is not good. The appearance of the seam, the circuit board has many parts, if the welding is not good, the parts are easy to fall off the circuit board, which seriously affects the welding quality of the circuit board. It is very important to have a good appearance, carefully identify, and strong interface.
Of course, the above is only a basic judgment. On the other hand, we judge from the quality specification requirements of the PCB circuit board itself:
1. After the components are installed, the telephone should be easy to use, that is, the electrical connection should meet the requirements;
2. The line width, line thickness and line spacing of the line meet the requirements to avoid line heating, open circuit, and short circuit;
3. The copper skin is not easy to fall off under high temperature;
4. The copper surface is not easy to oxidize, which affects the installation speed. It will be broken soon after oxidation;
5. No additional electromagnetic radiation;
6. The shape is not deformed, so as to avoid deformation of the shell after installation and dislocation of the screw holes. Now it is all mechanized installation, the hole position of the circuit board and the deformation error of the circuit and the design should be within the allowable range;
7. High temperature, high humidity and special environment resistance should also be considered;
8. The mechanical properties of the surface should meet the installation requirements;
The market price of PCB circuit boards has always been fiercely competitive. Affected by this factor, the cost of PCB board materials has also shown a rising trend. In order to improve their core competitiveness, more and more manufacturers are trying to monopolize the market at low prices. However, behind these ultra-low prices, it is obtained by reducing material costs and process manufacturing costs, but devices are usually prone to cracks (cracks), easy scratches, (or scratches), and their precision, performance and other comprehensive factors have not reached the standard. , which seriously affects the solderability and reliability of the product used.
In the face of the various PCB circuit boards on the market, the editor teaches you that when distinguishing the quality of PCB circuit boards, we can start from two aspects. The first method is to judge from the appearance.
Some friends may wonder, how can we judge from the appearance, we have to start from three aspects; first, the size and thickness of the standard, the thickness of the circuit board to the standard circuit board is different, customers can measure Check according to the thickness and specifications of your own products. The second is the light and color of the board. The external circuit board is covered with ink, and the circuit board can play a role of insulation. If the color of the board is not bright and there is less ink, the insulation board itself is not good. The appearance of the seam, the circuit board has many parts, if the welding is not good, the parts are easy to fall off the circuit board, which seriously affects the welding quality of the circuit board. It is very important to have a good appearance, carefully identify, and strong interface.
Of course, the above is only a basic judgment. On the other hand, we judge from the quality specification requirements of the PCB circuit board itself:
1. After the components are installed, the telephone should be easy to use, that is, the electrical connection should meet the requirements;
2. The line width, line thickness and line spacing of the line meet the requirements to avoid line heating, open circuit, and short circuit;
3. The copper skin is not easy to fall off under high temperature;
4. The copper surface is not easy to oxidize, which affects the installation speed. It will be broken soon after oxidation;
5. No additional electromagnetic radiation;
6. The shape is not deformed, so as to avoid deformation of the shell after installation and dislocation of the screw holes. Now it is all mechanized installation, the hole position of the circuit board and the deformation error of the circuit and the design should be within the allowable range;
7. High temperature, high humidity and special environment resistance should also be considered;
8. The mechanical properties of the surface should meet the installation requirements;
