High TG Board
High TG Board Manufacturer & Assembly – One-stop service
At present, more and more product designs need to use high TG boards. Now we will introduce you to what is a high TG circuit board.
Kinds of high Tg refers to high heat resistance. Generally, the Tg plate is 130 degrees or more, the high Tg is generally more than 170 degrees. And the medium Tg is more than 150 degrees. Usually, the PCB printed board of Tg ≥ 170 ° C is called a high Tg printed board.
High TG Board Development trends:
With the rapid development of the electronics industry, especially the electronic products represented by computers. The development of high functionality and high multi-layer requires the higher heat resistance of PCB substrate materials. This is an important guarantee. The emergence and development of high-density mounting technology represented by SMT and CMT make PCBs more and more inseparable from the high heat resistance of substrates in terms of small aperture, fine wiring and thinning.
The Tg of the substrate is improved, and the characteristics such as heat resistance, moisture resistance, chemical resistance, and stability of the printed board are improved and improved. The higher the TG value, the better the temperature resistance of the sheet. Therefore, in many lead-free processes, high Tg is more widely used.
High TG Circuit board definition:
The critical temperature at which the substrate melts from a solid-state into a rubbery state called the Tg point.
The higher the Tg point, the higher the temperature requirement of the sheet when pressed, and the pressed sheet will be harder and brittle, which will affect the quality of the mechanical drilling (if any) in the post process and the electrical properties in use.
The Tg point is the highest temperature (°C) at which the substrate remains rigid. That is to say, ordinary PCB substrate materials not only produce softening, deformation, melting, etc. at high temperatures, but also show a sharp drop in mechanical and electrical properties.
Generally, the Tg plate is 130 degrees or more, the High-Tg is generally more than 170 degrees, and the medium Tg is more than 150 degrees; the Tg of the substrate is improved, and the heat resistance, moisture resistance, chemical resistance, stability, etc. of the printed board are improved. Features will improve and improve.