How to distinguish the pros and cons of PCB circuit boards？
2021-12-03

How to distinguish the pros and cons of PCB circuit boards？



How to distinguish the pros and cons of PCB circuit boards？
 
With the increasing demand for PCB circuit boards in the mobile phone, electronics, and communication industries, there is more and more PCB supply and demand on the market. However, due to the fierce market competition in the price market, the cost of PCB board raw materials is also in a continuously rising development. The trend is that more and more manufacturers are in order to improve their competitive advantage and completely monopolize the market with low prices. Its essence is to reduce the cost of raw materials and manufacturing process costs to achieve the goal. Such PCB circuit boards are generally very prone to cracks (gaps) and scratches (or scratches), and their comprehensive elements such as accuracy and characteristics are still not qualified. The more serious ones will directly harm the performance of the product.

How to distinguish the pros and cons of PCBs among these various and dazzling PCBs? This is worth discussing.

There are two ways to distinguish the pros and cons of PCB circuit boards:

1. Identify the pros and cons of the circuit board from the appearance
Under normal circumstances, the appearance of the PCB circuit board can be specifically analyzed based on three levels.

1). Standards for size and thickness.
PCB circuit boards are not the same size as the standard circuit boards. Customers can accurately measure and inspect the thickness and specifications of their products.

2). Light and tone.
The external circuit boards are covered by printing ink, and the PCB circuit board can have the function of an insulating layer. If the color of the board is not bright and there is less ink, the thermal insulation board itself is not very good.

3). Welding appearance.
PCB circuit boards have many parts. If the electric welding is not good enough, the PCB circuit boards whose parts are easy to fall will seriously harm the welding quality of the circuit boards. The appearance is good, and the page strength is very important.

2.High-quality PCB circuit boards must meet the following requirements

1). The telephone 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 the screw holes after installation. 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 must meet the installation requirements.

The above is how to distinguish the advantages and disadvantages of PCB, have you learned it?