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The PCB design factory explained that clean PCBs are important for reliability. Printed circuit boards sometimes accumulate dust or other pollutants and require cleaning.

A clean PCB is important for reliability. Printed circuit boards sometimes accumulate dust or other pollutants and require cleaning. A dirty PCB may affect its expected normal design functionality. Whether your circuit board is dirty due to exposure to its working environment or improper packaging or protection, appropriate cleaning methods must be taken to improve reliability.

How PCBs affect functionality

Dust is composed of substances suspended in the air. It has complex properties and usually contains a mixture of inorganic mineral materials, water-soluble salts, organic materials, and a small amount of water.

PCB assembly

As SMT components become smaller and smaller, the risk of failure due to pollutants increases. Research clearly indicates that dust makes circuit boards more prone to moisture related faults, such as surface insulation resistance loss, electrochemical migration, and corrosion. PCB assembly and PCB design factories explain that clean PCBs are crucial for reliability. Printed circuit boards sometimes accumulate dust or other pollutants and require cleaning.

How to clean circuit boards

Be extra careful when cleaning PCBs. ESD prevention measures should be considered, and the power should be disconnected and carried out in a dry place. If cleaned using incorrect methods or steps, the circuit board may not work at all.

Cleaning dust

The best way to remove dust is to blow the circuit board clean with compressed air. Be careful of sensitive areas that may cause damage. A toothbrush is another tool that can be used to remove dirt and dust.

Cleaning flux

Circuit boards with residual soldering flux must be cleaned with saponification agent. For amateur enthusiasts and engineers, the most common thing is to wipe alcohol. The toothbrush can be moistened with alcohol and can be used to scrub any flux. Please note that if your circuit board is soldered with non cleaning flux, it will be difficult to remove and you may need to use stronger cleaning agents.

Clean corrosion

Slight corrosion caused by using baking soda to clean batteries or other items. It can be used to remove dirt without damaging the circuit board. Sodium bicarbonate has mild abrasiveness, which helps to remove corrosion or residues. Otherwise, using simple tools (such as using a distilled water brush) will not produce corrosion or residue. It can also neutralize the acidity of residues. PCB assembly and PCB design factories explain that clean PCBs are crucial for reliability. Printed circuit boards sometimes accumulate dust or other pollutants and require cleaning.