[PCB board membrane switch], 2013PCB switches, Shenzhen PCB board switch membrane switch provided by the Endowment. 博尔卓 Electronic Technology Co., Ltd. of Shenzhen City (www.boerzuo.com) had been "Business League certification", please rest assured purchase through the entire network, click on the page check "Business League certification icon," the company authentication information. You can also click on the "Business League Service Icons" on this page directly contact our customer service! The company is specialized in the production of flexible circuit boards fpc, double board FPC, multilayer FPC and flexible circuit boards, FPC private sector, the company has advanced production equipment PCB board membrane switch production, quality engineering and technical personnel and improving the management and service system. Since its establishment in 2001, the introduction of advanced equipment and production technology in Germany, Japan, Taiwan and other regions, is committed to the development and production of high density and high reliability ten-sided circuit board layers, which are widely used in computers, industrial control, communications, automotive electronics and home appliances membrane switch PCB board, about 70% of exports, marketing in North America, Europe, Japan, India and the Middle East. NPTH complete the bore tolerance oxidation, electric gold, immersion gold, electric tin (Pb-free), immersion tin (Pb-free) ± 0.025mm PTH completed diameter tolerance ± 0.050mm copper platinum key switch on the thickness of the film, with different colors represent key body position, shape and size of the membrane switch in the initial stage is more common. Dimensional membrane switch: Usually, only the key switch on the film to express the position of use of color, shape and size of the key body. This can only come with the operator's visual recognition accuracy 2013PCB plate membrane switch operation, because there is no proper feedback to indicate whether a finger on the switch so that the effective range of the switching operation, thereby affecting the confidence of the whole monitoring and the speed of operation. A key to open the body slightly raised so that the latest version of PCB membrane switch, slightly higher than the panel, constitute the three-dimensional shape of the membrane switch, called a three-dimensional key switch. Dimensional key not only to accurately / / FPC membrane switch membrane switch different from ordinary places circuit is no longer just a silver printed circuits, but the performance is more stable FPC circuit materials to replace, better high temperature, corrosion.