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7 Steps to Decrease Vibration in PCBs

 Feb 09, 2015

Vibration In PCBs

When making use of printed circuit board assembly services, you need to make sure that precautionary steps are being taken to guarantee that your Printed Circuit Board (PCB) and its components don’t vibrate. Most electronic devices are prone to some amount of vibration. The printed circuit board assembly plays a big role in determining the level of vibration experienced in a PCB.

Vibration occurs in two ways. Firstly, some vibration occurs during the functioning of the component. Secondly, the device might undergo some short-lived physical duress in the field, like being dropped. The PCB installed in the device needs to be resilient enough to be able to endure these situations.

Steps Taken to Decrease Vibration

Some steps are taken to ensure that the PCB is constructed in a manner that provides maximum stability and reliability. Some measures that can be taken to ensure this level of performance are listed below:

  1. The components need to be fixed in a way so that they do not vibrate. This is attributable to the level of detail followed by your assembly service provider.
  2. The soldering has to be exacting. It cannot be over or under done.
  3. The adhesive used to fixed components onto a board is of prime importance. A high quality sealing agent can acts as a shock absorber of sorts. It can help reduce the vibrations that occur in a PCB.
  4. PCBs are generally constrained around the edges to ensure that they do not vibrate.
  5. Anti Vibration Frames (AVF) can be used to minimize vibration as well. Although, this ends up increasing the overall cost of the PCB, these frames can be utilized for high grade applications like those found in the aerospace industry.
  6. Mechanical waves in a PCB are the biggest reasons for vibrations. These waves might originate at a weak spot but they travel and can cause other parts that have been reliably fixed to vibrate as well. This problem can be dealt with from the root by installing interconnections close to the parts that are bulky in terms of size or weight.
  7. The casing of the PCB determines the level of vibration experienced in a PCB.

The amount of vibration that a PCB and its components face depends on various factors. They can be eliminated in the ways mentioned above. For rigorous applications, it is best to discuss your requirements with your service provider. For more information about printed circuit board assembly services, please visit

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