Chinese wholesale 1layer Led Pcb - Cheap PriceList for SMD Aluminum LED Pcb Board Manufacturer – Yongmingsheng
Chinese wholesale 1layer Led Pcb - Cheap PriceList for SMD Aluminum LED Pcb Board Manufacturer – Yongmingsheng Detail:
owing to very good support, a variety of high quality merchandise, aggressive costs and efficient delivery, we love an excellent name among the our clients. We are an energetic company with wide market for Cheap PriceList for SMD Aluminum LED Pcb Board Manufacturer, We have exported to much more than 40 countries and regions, which have gained superior popularity from our costumers everywhere in the entire world.
owing to very good support, a variety of high quality merchandise, aggressive costs and efficient delivery, we love an excellent name among the our clients. We are an energetic company with wide market for , Now, we’ve been trying to enter new markets where we do not have a presence and developing the markets we’ve got the already penetrated. On account of superior quality and competitive price , we’ll be the market leader, you should don??￥t hesitate to contact us by phone or email, if you are interested in any of our products and solutions.
The substrate of High Tg circuit board will change from “glass state” to “rubber state” when the temperature rises to a certain area, and this temperature is called the glass transition temperature (Tg) of the board. In other words, Tg is the maximum temperature (℃) at which the substrate remains rigid. That is to say, ordinary PCB substrate materials at high temperature not only produce softening, deformation, melting and other phenomena, but also performance in the mechanical, electrical characteristics of a sharp decline (I don’t think we want to see their products appear this situation).
Generally speaking, the board of Tg is more than 130 degrees, high Tg is more than 170 degrees, and medium Tg is more than 150 degrees.
Usually Tg≥170℃ PCB, called high Tg PCB.
When the Tg of the substrate increases, the circuit board’s heat resistance, moisture resistance, chemical resistance, stability resistance and other characteristics will be improved. The higher the TG value, the better the temperature resistance of the plate. And the high TG is often applied in the lead-free process,
High Tg refers to high heat resistance. With the rapid development of the electronic industry and the electronic products represented by computer, the higher heat resistance of PCB substrate materials have become an important guarantee when the development towards into a high function and high multilayer. What’s more, the appearance 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 small aperture, fine circuit and thin form.
Therefore, the difference between the general fr-4 and the high Tg fr-4 is that in the thermal state, especially in the case of heat after moisture absorption. And there are many differences in the mechanical strength, dimensional stability, adhesion, water absorption, thermal decomposition, thermal expansion and other conditions of the materials. The products with high Tg are obviously better than ordinary PCB substrate materials. In recent years, the number of customers requiring the production of high Tg circuit board increased year by year.
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With our leading technology as well as our spirit of innovation,mutual cooperation, benefits and development, we will build a prosperous future together with your esteemed company for Chinese wholesale 1layer Led Pcb - Cheap PriceList for SMD Aluminum LED Pcb Board Manufacturer – Yongmingsheng , The product will supply to all over the world, such as: Johannesburg , Jamaica , Birmingham , After years' creating and developing, with the advantages of trained qualified talents and rich marketing experience, outstanding achievements were gradually made. We get good reputation from the customers due to our good products quality and fine after-sale service. We sincerely wish to create a more prosperous and flourishing future together with all the friends home and abroad!
By Rae from Swedish - 2017.01.11 17:15
The goods are very perfect and the company sales manager is warmful, we will come to this company to purchase next time.
By Tony from Greece - 2018.09.29 13:24