Many small partners may not be able to make a direct judgment on how to identify the pros and cons of PCB circuit boards. Today, the editor of PCB board manufacturers will show you how to make an intuitive judgment.
The market price of PCB Assembly Manufacturing circuit boards has always been highly competitive. Affected by this factor, the cost of PCB board materials has also shown a rising trend. In order to enhance their core competitiveness, more and more manufacturers are trying to monopolize the market with low prices. However, behind these ultra-low prices are obtained by reducing material costs and process manufacturing costs, but devices are usually prone to cracks (cracks), 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.
Faced with 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 be wondering, 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 is different from the standard circuit board, and the customer can measure Check 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 an insulating role. If the color of the board is not bright and less ink, the insulation board itself is not good: third, soldering 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 will seriously affect the welding quality of the circuit board. The appearance is good, carefully identified, and the interface is strong-the point is very important.
Of course, the above is only a basic judgment. On the other hand, we judged from the quality specification requirements of the PCB circuit board itself:
1. The product is required to be easy to use after the components are installed, that is, the electrical connection must meet the requirements;
2. The line width, line thickness, and line distance of the line meet the requirements to prevent the line from heating, breaking, and short-circuiting;
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, and it will be broken soon after being oxidized;
5. There is no additional electromagnetic radiation;
6. The shape is not deformed, so as to avoid deformation of the housing and dislocation of screw holes after installation. Now it is all mechanized installation, and the deformation error of the hole position and circuit of the circuit board 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 PCB Manufacture the surface must meet the installation requirements;
