PCB Tech - How to distinguish the pros and cons of FPC/PCB

With the increasing demand for FPC/PCB circuit boards in the mobile phone, electronics, and communication industries, there are more and more FPC/PCB supply and demand phenomena on the market. However, due to the fierce competition in the price market, the cost of FPC/PCB board raw materials is also at In the continuous upward development trend, more and more manufacturers are in order to improve their competitive advantages 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 FPC/PCB circuit boards are generally very prone to cracks (gaps), scratches, (or scratches), and their accuracy, characteristics and other comprehensive elements If it is still not qualified, the more serious ones will directly harm the performance of the product.

How to distinguish the advantages and disadvantages of FPC/PCB in these various and dazzling FPC/PCB? This is worth discussing.

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

1. Identify the pros and cons of the circuit board from the appearance

Under normal circumstances, the appearance of FPC/PCB circuit boards can be specifically analyzed based on three levels.

1. Standards for size and thickness.

FPC/PCB circuit boards are not the same size as the thickness of standard circuit boards. Customers can accurately measure and check the thickness and specifications of their products.

2. Light and tone.

The external circuit boards are covered by printing ink. FPC/PCB circuit boards can have the function of insulating layer. If the color of the board is not bright and there is less ink, the heat insulation board itself is not very good.

3. Welding appearance.

The FPC/PCB circuit board has many parts. If the electric welding is not good, the FPC/PCB circuit board whose parts are easy to fall will seriously harm the welding quality of the circuit board. The appearance is good, and the page is better. Pivotal.

2.High-quality FPC/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 PCB 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.