PCB layout process, the layout after the system is completed, should be reviewed on the PCB diagram , see the layout of the system is reasonable, whether we can achieve the best results. Can usually be inspected from the following several aspects :
1 reasonable assurance whether the wiring system layout or the best, whether it can ensure reliable wiring , whether I can guarantee the reliability of the circuit work. When the layout needs to go as well as power and ground network signals have an overall understanding and planning.
2 PCB size is consistent with the processing of paper sizes , the ability to meet the PCB manufacturing process requirements , the availability of behavioral markers. This requires special attention , many PCB circuit board layout and routing are designed beautifully , reasonable, but neglect to pinpoint positioning of the connector , resulting in the design of the circuit and other circuits can not be docked .
3 -D elements in the absence of conflict , three-dimensional space. Note that the actual size of the device , particularly the height of the device. Free layout of components in the welding , generally can not exceed the height of 3mm.
4 density component placement is orderly, neat , whether all fabric finish . When the layout of components , not only to consider the type of signal direction and signals need to pay attention or to protect the place , but also consider the overall density of the device layout to achieve a uniform density .
5 requires frequent replacement of components can be easily replaced , the device is easy to insert the plug-in board . Replacement and patch should be changed frequently to ensure easy and reliable components .
6 adjustable components are easy to adjust .
7 is a suitable distance between the thermal element and the heating element .
8 places in the need for cooling fans are mounted radiator or air flow is smooth . It should be noted cooling components and circuit boards.
9 is smooth and interconnect signal to a minimum .
10. Plugs, sockets, etc. and mechanical design are contradictory.
11 lines are interference issues be considered.
12 Mechanical strength and performance of the circuit board are somewhat considered.
13 art and aesthetics of the circuit board layout.
