TG170 High TG multilayer pcb

What is High TG pcb?

High Tg refers to high temperature . With the rapid development of the electronic industry, especially the electronic products represented by computers, towards the development of high function, high multilayer,high frquency and high quality board requirment,need PCB substrate material's higher heat resistance as an important guarantee. The emergence and development of high density installation technology represented by SMT and CMT make PCB more and more inseparable from the support of high heat resistance of substrate in terms of small aperture, fine line and thin type.

How to choice the correct TG value on custom pcb fabrication?

To meet Quick-turn PCB fabrication requirement,we should choice the correct TG value.The TG value higher, the boards stock are less.Also,when you do pcb prototype ,you should find a low Cost Prototype PCB choice. the TG value as close as possible to the material value because the TG value higher,the price will be higher.

General Tg plate is more than 130 degrees, high Tg is generally more than 170 degrees, medium Tg is about more than 150 degrees.Usually, The PCB printed circuit board with Tg≥170℃ is called high Tg circuit board.
The Tg of the substrate is improved, and the heat resistance, moisture resistance, chemical resistance, stability and other characteristics of the circuit board will be improved and improved. The higher the TG value, the better the temperature resistance of the plate, especially in the lead-free process, high TG is used more.

High Tg refers to high heat resistance. With the rapid development of the electronic industry, especially the electronic products represented by computers, towards the development of high function, high multilayer, need PCB substrate material's higher heat resistance as an important guarantee. The emergence and development of high density installation technology represented by SMT and CMT make PCB more and more inseparable from the support of high heat resistance of substrate in terms of small aperture, fine line and thin type.

Therefore, the difference between general FR-4 and high Tg FR-4 is that the mechanical strength, dimensional stability, bonding, water absorption, thermal decomposition, thermal expansion and other conditions of the material are different under the thermal state, especially under the heat after hygroscopic, and high Tg products are significantly better than ordinary PCB substrate materials. In recent years, the demand for the production of high Tg custom pcb fabrication customers increased year by year.