10 Layer ENIG FR4 Tg150 PCB
High Tg PCB
The Glass Transition Temperature (Tg) is one of the most important properties of any epoxy and is the temperature region where the polymer transitions from hard, glassy material to a soft, rubbery material.
When the working temperature reaches the melting point, that means the temperature exceeds the Tg value, the status of PCB material will be changed from glassy to liquid, which will affect the function of PCB. And this value is related to the stability of the PCB dimension.
As usual, made with Tg ≥ 170℃ PCB material, which is called a high Tg printed circuit board. With the rapid development of the electronics industry, high Tg material is widely used in computers, communication equipment, precise apparatus, and instruments, etc.
How to Distinguish High Tg PCB Materials
| Materials | Tg | Mot |
| Ordinary Tg | 130℃ | 110 |
| Medium Tg | 150℃ | 130 |
| High Tg | 170℃ | 150 |
| polyimide-Ultra high Tg | 260℃ | 240 |
Application Of High Tg PCB
The higher of Tg, the better the performance of PCB heat resistance, moisture resistance, chemical resistance, stability and other characteristics.
