How to distinguish between ordinary double-sided boards and multilayer circuit boards?

Ordinary double-sided boards and multilayer circuit boards can be distinguished by the following methods:

Observe the number of layers on the surface of the circuit board: the number of layers of ordinary double-sided boards is usually 1-2 layers, while the number of layers of multilayer circuit boards is usually 3 or more.

Check the line on the edge of the circuit board: ordinary double-sided boards have lines with ink on both ends, while the multilayer circuit board is invisible within the line is pure board material.

Observe the colour and texture of the surface of the circuit board: multilayer PCB circuit board can be seen within the vague shadow, shallow with a little dim, deep is able to see the line, while the ordinary double-sided board does not have this feature.

Check the materials used in the circuit board: multilayer PCB circuit board board board material is usually used KB material, contrast board surface smooth, especially in the moulding process after cleaning will be able to see, while the ordinary double-sided board may use different materials.

Understand the manufacturer's product information: If the above methods can not accurately distinguish between ordinary double-sided boards and multilayer circuit boards, you can consult with the manufacturer of product information, to understand the specific type of product and manufacturing process.

It should be noted that the difference between ordinary double-sided boards and multilayer circuit boards not only lies in the appearance and manufacturing process, but also includes circuit design, material selection, production costs and other aspects. Therefore, when purchasing and using these products, you should carefully understand their characteristics and scope of application to avoid unnecessary risks and losses.