How can trace routing improve PCB design?

When designing PCB (printing circuit board), the electronic engineer must follow the best practice of the wiring wiring. This helps maintain PCB signal integrity and reduce electromagnetic interference (EMI).

String may occur between adjacent wiring on a single PCB layer, and may also occur between the two layers of PCB parallel and vertical wiring. When this happens, the signal from one routing will cover another, because its amplitude is larger than another wiring. the best way is to keep the distance between the wiring three times the width of the wiring. This can protect 70% of electric fields to avoid this interference. The unsolved skewers will have a negative impact on the signal -to -noise ratio, so it is best to reduce the skewers as soon as possible during the design stage.

One choice method is to use a string -borne calculator. Once the user enters the values of the wiring distance, the height of the substrate, and the source voltage, the tool can calculate the coupling voltage and string coefficient of PCB. These options save for a long time and manual computing, and also avoid possible errors.

If the test shows that the performance of the product has repeatedly reached the expectations, engineers may need to improve signal integrity in PCB. Sometimes such faults appear before the large -scale production of PCB. However, the problem of signal integrity may only be discovered only during the large -scale production process or when customers start using the product at the scene.

 Signal integrity is related to the quality of the transmission signal and whether the signal can be disappointed. The problem of signal integrity may exceed the PCB range and introduce or generate EMI that affects nearby devices. The work that improves signal integrity starts from the principle diagram and layer design stage. Making the most appropriate decision at this time will affect the performance of PCB.

For example, when the thickness of the wiring is appropriate, the component can be prevented from overheating, which helps heat management. This is becoming more and more important, especially when many products containing PCB become smaller and smaller.

PCB manufacturers invested huge sums of money in terms of quality control to ensure the reliability of the product. For example, X-ray scanning can identify hidden defects in non-broken way. X-ray detection technology is usually a key part of quality assurance. However, attention to the wiring of the wiring provides a choice of detection through visual detection, which can improve the signal integrity of PCB. The assembly workers can discover potential problems earlier and solve them before causing big trouble.

For example, they should check whether the wiring is bent sharply, which is especially a problem for high-power or high -frequency wiring. Ideally, the designer should keep the line extend along the straight line. If the design and expected application of the circuit board requires a balanced length, people can find a delay line. They usually look like the curved snake -shaped wiring on the surface of the PCB.

3D printing and other technologies have greatly changed the way people design and manufacture electronic products. However, even if 3D printers allow users to print circuits, reduce waste and improve efficiency, they should not ignore the best practice related to wiring wiring and other details.

For example, placing components in a strategy can reduce EMI in PCB. Even if you use the proper width and check whether there are unnecessary bending, problems may still occur due to the location of certain components.

For example, because the inductors can produce a magnetic field, they should not be connected to each other or too close to each other. In the case of no choice, vertical arrangement should be selected to minimize mutual coupling. Alternatively, selecting a circular inductor, this inductor is unlikely to cause magnetic field problems. Make sure that the width of the wiring of the inductor does not exceed the required width. Otherwise, they may play a role as antenna and lead to unnecessary launch.

Consider using a high -end design tool in order to follow the principles related to wiring and other best practices. Some wiring products allow users to switch between 2D and 3D design. A survey conducted by users using advanced tools found that about 45% of their time spent on 3D wiring, thereby benefiting from real -time visualization. Users can also perform specific operations in a 3D environment, such as trimming pads, and then try in actual design.

These are some feasible methods in future design. You can minimize EMI by paying attention to the wiring and give priority to processing the PCB signal integrity. Following the established principles during the design stage, many problems that cause PCB performance in internal testing or actual use can be avoided.

The use of digital project management tools that can track the wiring is also very helpful, including tracking the wiring decision-making, which helps to find the possible fundamental reason for the problems discovered. These products are also very convenient because they usually work in the cloud, eliminating geographical restrictions.