What is the meaning of TG in PCB circuit board sheets

3.Tg point is the maximum temperature (℃) of the substrate to maintain rigidity. That is to say that ordinary PCB substrate materials at high temperatures, not only produce softening, deformation, melting and other phenomena, but also manifested in the mechanical and electrical characteristics of the sharp decline 4.General Tg of the board for more than 130 degrees, High-Tg is generally greater than 170 degrees, medium Tg is about greater than 150 degrees; substrate Tg improved, printed circuit boards, heat resistance, humidity, chemical resistance, resistance to stability and other characteristics will improve and improve. The higher the TG value, the better the temperature resistance of the board, especially in the lead-free tin spraying process, high Tg application is more. Hebei Cangzhou Lida circuit board circuit board factory mainly produces single-sided circuit boards, aluminum-based circuit boards, PCB circuit boards, LED circuit boards and multilayer circuit boards, which are widely used in, aerospace, defense, communications, home appliances, environmental protection, medical and industrial control fields.