How to choose a good quality FPC? - Suzhou ATv plasma cleaning machine

The method of judging the quality of the FPC circuit board: one: Distinguish the quality of the circuit board from the appearance

Under normal circumstances, the appearance of the FPC circuit board can be analyzed and judged through three aspects;

1. Standard rules for size and thickness.

The thickness of the circuit board to the standard circuit board is different sizes, customers can measure and check according to their own product thickness and specifications.

2. Light and color.

The external circuit board is covered with ink, the circuit board can play the role of insulation, if the color of the board is not bright, less ink, the insulation board itself is not good.

3. Appearance of weld.

Because there are more parts of the circuit board, 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, the appearance is good, carefully identify, and the interface is often important.

Second: high-quality FPC circuit boards need to meet the following requirements

1. The telephone should be easy to use after the components are installed, that is, the electrical connection should meet the requirements;

2, the line width, line thickness, line distance meet the requirements, so as to avoid heat, break, and short circuit of the line;

3, by high temperature copper skin is not easy to fall off;

4, the copper surface is not easy to oxidize, affecting the installation speed, and 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 hole. Now are mechanized installation, the hole position of the circuit board and the deformation error of the line and design should be within the allowable range;

7, and high temperature, high humidity and special resistance should also be considered in the range;

8, the mechanical properties of the surface should meet the installation requirements;

The above is the FPC circuit board to judge the quality of the method, in the purchase of FPC circuit board, be sure to polish your eyes.