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What is FR4? FR4 is the name of a type of epoxy glazing material. fr stands for flame retardant. 4 refers to the factors that differentiate it from other materials. FR4 means two things. The material. As a construction material, it refers to epoxy laminates reinforced with glass fibers. Used to make FR4 boards.

Evaluation. China fr4 pcb assembly is also a unit of evaluation. Epoxy laminates are classified. This classification shows the basic quality of the epoxy resin board.

Glass Transition Temperature is referred to as Tg, and tg150 fr4 is a designation for a particular type of epoxy glass. Normal FR4 Tg ranges from 130 to 140 degrees, moderate Tg is higher than 150 to 160 degrees, and China high TG PCB is more than 170 degrees. The performance of PCB anti-moisture heat resistance, chemical resistance, quality stability, and other properties improves as Tg increases. Tg 170°C PCB material is referred to as a China high Tg PCB. Greenstone is a China high tg pcb supplier which can provide satisfied high tg pcb. These days, computers, precision instruments, communication devices, etc., all frequently use high Tg materials.