Branch Snyder Department of International Ltd. Shenzhen-Electronic Technology Co., Ltd. - The Department of Electronic Technology Company is a professional custom single-sided, double-sided, 2-40 layer plywood professional supplier buried vias boards for clients provide high-precision, high-quality circuit board in Shenzhen, quality assurance, reasonable prices. Buried hole buried hole refers to do in the inner vias after lamination can not see it occupies less than the outer area of ??the hole is buried in the interior of the board. Is caught in the middle layer, from the surface can not see these processes buried vias board features, the top and bottom are invisible. Benefits can be buried vias increase alignment space. But the high cost of the process do buried vias, general electronic products do not use, only the very high end products will have applications. General application in six or more than six PCB board Naide International Limited Shenzhen Branch Newell Electronic Technology Co., Ltd. - The Department of Electronic Technology Company is a professional custom single-sided, double-sided, 2-40 layer plywood professional supplier, to provide customers with high-precision, high-quality circuit board in Shenzhen, quality assurance buried vias boards trends at reasonable prices. Vias itself exists for stray capacitance to ground buried vias board Which is good, if the ground plane vias isolation pore diameter D2, via pad diameter D1, PCB thickness T, the board base the size of the parasitic capacitance material permittivity ε, the vias are similar: the main circuit will affect the parasitic capacitance C = 1.41εTD1 / (D2-D1) through the hole caused by the extended rise time of the signal, reducing the circuit The speed, the smaller the impact of the smaller capacitance value Newell record (Figure) _ buried vias are plated circuit board _ Yunnan buried vias boards Shenzhen-Electronic Technology Co., Ltd. Department by. Newell Shenzhen Electronic Technology Co., Ltd. (www.yipcb.com) (www.yipcb.com) adhere to the "people-oriented" business philosophy, with a professional staff, and strive to provide the best products and services to contribute to the community, and welcome new and old customers throughout the visit, sincere cooperation for a better future. Newell create - your trusted friend, Company Address: Bao'an District of Shenzhen City forward Road Newell Innovation Center B507, Contact: Huang Shengxing.