The so-called professional terminology refers to a unified industry name for certain things in a specific field. These terms are universal in international practice and communication is very convenient. Therefore, professional terms are used in all walks of life. In different industries, professional terms are naturally different. As a professional PCB circuit board manufacturer, Honglian Circuit Editor will give it Let’s take a look at popular science, the professional terminology of the PCB circuit board industry, I believe you will gain something after reading it.

The materials used to make circuit boards usually have XPC, FR1, FR2, CEM1, CEM3 and FR4, XPC, paper core, and no 94-VO fire mark. Let's take a look at what it means separately:

1. FR1 is an insulating and flame-retardant PC film with high insulation level, good temperature resistance, high flame-retardant level, and features such as easy folding, bending, and processing. It cannot be electroplated or sprayed with tin, and can withstand a high temperature of 105 degrees Celsius.

2. FR2, paper core phenolic resin copper clad laminate, can not be electroplated or sprayed tin, and can withstand high temperatures of 130 degrees Celsius.

3. CEM1, epoxy glass cloth paper-based sheet, belongs to broken glass fiber.

4. CEM3, paper core epoxy resin copper clad glass fiber board, belongs to the whole piece of glass fiber, and is generally used to produce single-sided boards.

5. FR4, epoxy resin copper clad glass cloth board, belongs to the whole piece of glass fiber, generally used to produce double-sided and multi-layer boards;