Snyder International Ltd. Shenzhen Branch Newell Electronic Technology Co., Ltd. The company is a custom 2-40 layer PCB board professional supplier of sheet main services provided are HDI boards, finger board, Bluetooth module board, half plate, through the orifice plate, rigid-flex board, plywood sheets and a series of line 1. Minimum width:. 4mil (0.1mm). That is less than 6mil width will not be produced circuit boards, if conditions permit, the board design silver surface discoloration reasons, the bigger the better circuit board design why is there a split of copper, the greater the width, the better factory production, yield more minimum line high in the general design of conventional design principles around 10mil This is very important single-sided circuit board design must consider 2. distance: 4mil (0.1mm) .. Min.Trace.Spacing is line-to-line, line-to-pad distance of not less than 6mil from the production point of view, the bigger the better, the general routine in 10mil, of course under the design conditions, the bigger the better this is very important. 3. line to the contour line spacing 0.508mm (20mil) via through-hole 1. Minimum aperture:. 0.3mm (12mil) 2 smallest vias (VIA) pore size of not less than 0.3mm (12mil), the pad can not be less than unilateral 6mil ( 0.153mm), preferably greater than 8mil (0.2mm). 3. vias (VIA) to the hole spacing (hole edge to the hole side) is not less than 6mil, preferably greater than 8mil. 4. to outline pad pitch 0.508mm (20mil) - The Department of Shenzhen Electronic Technology Co., Ltd. GPS antenna signal transmission line is also very important, including external feeders and PCB traces. Only when it may be the greatest power output impedance matching. So the entire transmission line to ensure 50Ω impedance at high frequencies, for how to design the PCB RF trace impedance, some small software can help you easily calculated. Hubei Province, circuit boards, circuit board micro holes occurs because, Newell record (certified merchants) are provided by Shenzhen-Electronic Technology Co., Ltd. Department. Newell Shenzhen Electronic Technology Co., Ltd. (www.yipcb.com) (www.yipcb.com) in the printed circuit board in this area devoted boundless enthusiasm and passion, Newell has been creating customer-centric, for customers to create Idea value, quality, service to win market, and sincerely hope to cooperate with the community to create success, to create brilliant. Related businesses welcome inquiries, contact: Huang Shengxing.