What are the Advantages of High Tg PCB?
When the temperature rises to a certain critical value, the PCB substrate will change from a glass state to a rubber state. The critical value of this temperature is the Tg value, so why use a high Tg PCB, and what are the specific advantages? 1. H eat R esistance The high-density mounting technology represented by SMT and CMT makes the PCB more and more inseparable from the high heat resistance support of the base material in terms of small aperture, circuit refinement and thinning. Ordinary Tg boards will soften and deform at high temperatures, while high Tg PCB have better heat resistance and can still maintain excellent physical and mechanical properties under high temperature conditions. 2. M oisture R esistance Moisture is destructive to the PCB and can greatly reduce the insulation resistance between conductors . Compared with ordinary PCB, high Tg PCB have better moisture resistance. 3. Stability With the deve...