How to Distinguish the Quality Difference of the Circuit Board

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2020-05-04 16:19:56

The rapid development of mobile phones, electronics, communications and other industries has also driven the rapid growth of the PCB circuit board industry. Due to the increasing demand for electronic products, people have increasingly higher requirements on the number of components, weight, accuracy, materials, colors and reliability.

However, due to the fierce market price competition, the cost of PCB board materials is also rising. More and more circuit board manufacturers monopolize the market at low prices in order to enhance their core competitiveness. However, behind these ultra-low prices, they are obtained by reducing material costs and manufacturing costs, but devices are usually prone to cracks and are easily scratched. The comprehensive factors such as accuracy and performance have not yet reached the standard, which seriously affects the solderability and reliability used in the product, etc.

Facing various PCB circuit boards on the market, you can start from two aspects to distinguish the quality of PCB circuit boards. The first method is to judge from the appearance, and the other method is to judge from the quality requirements of the PCB board itself.

The method to distinguish the quality difference of the PCB circuit board:

First: Identify the quality difference of the circuit board from the appearance

Normally, the appearance of the PCB circuit board can be analyzed and judged from three aspects.

1. Light and Color.

The external circuit board is covered with solder mask, and the circuit board can play an insulating role. If the color of the board is not bright and there is no solder mask, the insulation board itself is not good.

2. Standard Rules for Size and Thickness.

The thickness of the circuit board is different from the thickness of the standard circuit board. Customers can measure and check the thickness and specifications of their products.

3. Weld Appearance.

Because there are many parts on the circuit board, if the welding is not good, the circuit board that the parts are easy to fall will seriously affect the welding quality of the circuit board. It is important to have a good appearance after welding and carefully identify a strong interface.

Second: High-quality PCB circuit boards need to meet the following requirements

1. The copper surface is not easily oxidized and does not affect the installation speed;

2. After the components are installed, the phone should be easy to use, that is, the electrical connection must meet the requirements;

3. Copper skin is not easy to fall off due to high temperature;

4. The line width, line thickness, and line spacing of the line meet the requirements to avoid line heating, open circuit, and short circuit;

5. No additional electromagnetic radiation;

6. High temperature, high humidity and special environment resistance should also be considered;

7. The shape is not deformed, so as to avoid the deformation of the housing after installation and the screw holes are misaligned. Now all mechanized installation, the hole position of the circuit board and the deformation error of the circuit and design should be within the allowable range;

The mechanical properties of the surface must meet the installation requirements;

HOYOGO is an international, professional, reliable PCB manufacturer. We have 2 production bases with a monthly production capacity of 500,000 square meters. One-stop PCB product supply and solution. And HOYOGO have a management team with 25 years of average industry experience and reliable quality assurance.