Printed circuit board layout
Printed circuit board layout can be performed manually using CAD or EDA tools or in combination with an auto-router. The best results are typically achieved using some combination of the two. The printed circuit board layout can consist of several layers and for illustration purposed the layers will be colored and compressed into a single overlay image. The width of the tracks is a trade-off based on current flow, space available, size of parts, and electromagnetic interference. The track layout is a similar trade-off that also picks when to dodge from one layer to another to avoid an obstacle, but generally aims to find the shortest path between the connected points. Given the impedance, susceptibility, and signal on tracks, the loop area is another trade-off that is considered as the design proceeds. And then, added to all that is design-for-manufacture or DFM. Please click china pcb manufacturer to get the information.
Printed circuit board manufacturer put a complete silkscreen identification overlay on most of our boards. The silkscreen contains important information that assists people to correctly assemble and use the device. When the printed circuit board layout is complete, the final CAD or Gerber file is sent for manufacturing. The etched printed circuit board is typically ready a few days later, ready for assembly into prototypes.