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Top 5 PCB Grounding Guidelines
7 Nov 2018

As long as the circuit is working and the systems are being carried around without any problem, grounding is not that important for us. But this is wrong. As soon as the circuit starts getting complex, you need to work more to ensure that all the schematics are fully grounded, and every part of the circuit has been connected to the ground terminal.

In fact, the engineers also stress on allocating a certain portion of the PCB to the ground so that you always have enough space to build the rightful connections.

So when it comes to grounding the PCB, what rules should you be following? Let us have a look at some of the most obvious ones that even the China PCB manufacturers stress upon.

Rule #1
The first rule is to leave no component or terminal unattached. Everything needs to have a connection with the ground terminal. If you find an open space in your circuit that you can’t seem to fill up, use coper to cover that place so that the whole layer is conducting and doesn’t cause hindrance to the traveling signal in any way. 

Rule #2
Most engineers are in the habit of slicing up the ground especially when they are dealing with multiple layered circuits. It does work but then causes problems if you are constantly routing traces on this layer. Thus ground needs to be uncompromised a never sliced no matter how many layers the circuit has.

Rule #3
No matter how many separate grounds you have going on in the circuit you are working with, but make sure that you, in the end, bring all the grounds together to a single point. This star grounding rule will further protect the circuit and help with the signal strength throughout. You can even do this by dedicating the metal chasing for this or reserving a whole layer on your PCB for this purpose.

Rule #4
The ground is the first thing that you need to lay out in your design. Even when assembling, get to the grounding part first. If you begin with the routing and tracking phase and have not set the ground right, the circuit will create problems for you in the later stages. Moreover, it also impacts the life often circuit and may ruin the components too. Thus, before you begin, reserve a dedicated ground and always begin your work by going up from it.

Rule #5
Most of the circuits that we work with are not as simple as we would want them to be. This means that the chance of having both the analog and digital signals going together side by side is comparatively high. When grounding the board, create separate grounds for these two. This is because they both travel at different speeds and need to be handled separately for best results.

Grounding is the most basic yet the most crucial part of the circuit design. Log in to RayPCB.com today and know more about the PCBs and how you can use each one to create circuits that are meant to last.

Grounding PCB
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