די אַפּלאַקיישאַן פון פּקב circuit board is familiar to everyone and can be seen in almost all electronic products. The development of science and technology promotes the growth of PCB circuit board industry, and people have higher and higher requirements for layers, precision and reliability of components. There are many kinds of PCB circuit boards in the market, and it is difficult to distinguish the quality. In this regard, the following to teach you a few ways to identify the PCB circuit board.

First, judging from the appearance

1. Appearance of weld

Because there are many PCB parts, if the welding is not good, the PCB parts will fall off easily, which seriously affects the welding quality and appearance of the PCB. Therefore, it is very important to weld firmly.

Standard rules for dimensions and thicknesses

Because PCB board has different thickness to standard PCB board, users can measure and check according to their own requirements.

3. Light and color

Usually the external PCB board is covered with ink to play the role of insulation, if the color of the board is not bright, less ink, indicating that the insulation board itself is not good.

Second, from the board to judge

1. Ordinary HB cardboard is cheap and easy to deformation and fracture, so it can only make a single panel. The color of the component surface is dark yellow, with exciting smell, and the copper coating is rough and thin.

2, single 94V0, CEM-1 board, the price is relatively higher than the board, component surface color is light yellow, mainly used for industrial boards and power boards with fire rating requirements.

3. Glass fiber board has high cost, good strength and green double-sided. Basically, most PCB boards are made of this material. No matter what color of PCB printing ink to smooth, can not have false copper and bubbling phenomenon.

Knowing the above points, it is not a particularly difficult thing to identify the פּקב קרייַז ברעט.