What are the advantages of high TG boards in PCB applications?

What are the advantages of high TG boards in PCB applications?

The critical temperature at which the substrate melts from solid to vulcanized rubber is called the TG point. The higher the TG point, the higher the temperature adjustment during plate pressing, and the pressed plate will become harder and brittle. To a certain extent, it will endanger the drilling quality of mechanical equipment during processing and the electrical characteristics of the application. Generally speaking, TG is above 130 degrees, high TG board is generally above 170 degrees, and medium TG is about 150 degrees.

Advantages of high TG board applied to PCB:

Generally, PCB with TG≥170℃ is called high TG board. Increasing the Tg of the substrate will improve the heat resistance, moisture resistance, cold resistance, acid resistance and reliability of the circuit board. The higher the TG value, the better the temperature resistance of the board, especially in the lead-free process, the more frequent use of TG board.

High TG board refers to high heat resistance. The rapid development of high-performance electronic equipment represented by electronic substrates has put forward higher requirements for the performance of circuit boards. The emergence and development trend of high-density packaging technologies represented by SMT and CMT have made PCBs more and more important for the application of high heat resistance of substrates in terms of small aperture, fine wiring, and thin profile.

Therefore, the difference between ordinary FR-4 and high TG board is in the thermal state, especially in the thermal state after moisture absorption, the impact toughness, specification reliability, adhesion, water absorption capacity, decomposition reactivity and thermal deformation of the raw material are different of. High Tg products are significantly better than general PCB substrate materials. In recent years, more and more customers have requested the production of high TG boards.

The above is about "what are the advantages of high TG boards in PCB applications". Looking forward to helping you all. If you have anything unclear, please feel free to explain to you through our online customer service.