PCB Design: Tips and Tricks for Your Layout

When doing a PCB design, engineers usually focus most of their attention on how to format the circuits in order to ensure that the prototype is functional. This would leave the layout itself to be neglected which could cause reliability problems. This is something that you should not allow to happen. You can avoid these things if you have the right tips and tricks that will prevent these things from happening.

Sizing Traces

A copper track is one of the most conducive paths often used to connect two points with the PCB design. The ones that are utilized in PCB assembly are those with resistance. Most of the time, PCB designers make use of thickness, width, and length to control the trace resistance. It is then measured in ounces of copper. There are many designers who use anywhere between 1 and 6 ounces of copper in order to provide different levels of thickness. In order to determine the maximum thickness for a certain project, make use of a PCB trace width calculator and go for a 41-degree Fahrenheit rise.

At the same time, it is a must to keep in mind that traces on the external layers would cool off a lot better when the heat from its internal layers should travel through the layers of copper prior to being conducted. In this respect, the simplest printed circuit boards are those that contain copper tracks or the ones that interconnects on one of the surfaces. These are called as 1-layer PCBs.


Make your Loops Small

Loops, most especially the larger ones need to be made as small as possible as smaller ones have resistance and lower inductance. In addition, a PCB that have high loops lessens the amount of high-frequency voltage spikes.


Decoupling Capacitor Placement

The capacitors should be as near as possible to the ground pins and power of your integrated circuits in order to increase their efficiency. If they are placed away their inductance ability will be reduced.


Noise Traces Should be Away from Analog Traces

By placing the two types of traces together, the signals on these traces doubles up. This leads to short-circuiting and interference. It is a must that you keep these high-frequency traces away to avoid noise.


Leave Room

It is imperative that you leave some room between the fills and copper traces to prevent any shock hazard. Solder marks are not always a reliable conductor; thus, you have to make sure that there is enough amount of distance between these two.

These tips should be followed so you will have an efficient and reliable PCB layout. And if some help is needed for the completion of your designs, you should contact the experts for help and more information.


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