source:Industry News release time:2022-04-16 Article author:yu Popular:pcb
PCB board materials can be divided into: paper base, glass fiber cloth base, composite base (CEM series), laminated multilayer board base and special material base (ceramic, metal core base, etc.).
1. PCB, the Chinese name is printed circuit board, also known as printed circuit board, is an important supporting component of electronic components and the carrier of electrical connection of electronic components.
2. The main material of printed circuit board (PCB) is copper clad laminate, while copper clad laminate (copper sheet) is composed of substrate, copper foil and adhesive.
3. The base plate is an insulating layer board composed of polymer synthetic resin and reinforcing materials; the surface of the base material is covered with a layer of pure copper foil with high conductivity and good weldability, and the usual thickness is 35~50/ma.
In the past one or two years, with people's attention to environmental protection, a new type of CCL without bromines has been separated from the flame-retardant CCL. Due to the rapid development of electronic technology, the performance requirements of CCL are becoming more and more important. high. Therefore, according to the performance classification, CCL is divided into ordinary performance CCL, low dielectric constant CCL, high heat resistance CCL (the L of ordinary CCL is above 150 ℃), and low thermal expansion coefficient CCL (generally used on packaging substrates). With the continuous development and progress of electronic technology, new requirements are constantly put forward for printed board substrates, which promotes the continuous development of copper clad laminate standards.
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