What Happens If PCBAs Have a Negative Conformal Finish?

PCBA is not complete without conformal finishing. The demand for Conformal Finishing is increasing as the quality of PCBA products on
the market continues to improve. It is therefore important to choose high-quality Conformal Coating.
However, a negative Conformal Layer can have a lot of adverse effects on PCBA. We will now discuss the
negative effects of a bad conformal finish on PCBA.

1. Reduced Electrical Conductivity

If the paint used is not good, it will definitely reduce the electrical conductivity. The Conformal
Coating can contain ions such as potassium and salt ions that will disrupt the PCBA circuit. This will
affect the normal circuit procedure. A lack of conformal layer can also damage the PCBA metal lines,
causing circuit disconnections or short-circuits, affecting the normal operation of the equipment.

2. Poor Corrosion Resistance

Conformal Finish’s main purpose is to protect PCBA against dampness, deterioration and other
problems. However, a poor anti-corrosion coating has a lower corrosion resistance than if it were a good
one, so PCBA is more likely to rust. The metal wiring of the PCBA will be damaged if the PCBA rusts.
This will interrupt the normal operation of the equipment.

3. The Efficiency of Heat Dissipation Is Affected

The PCBA manufacturer’s office generates a lot of heat. If it is not dissipated promptly, the
circuit will be damaged and the tool security compromised. A good conformal covering has excellent
warmth dissipation characteristics, which will help PCBA better heat dissipation. The negative Conformal
Layer, however, will affect the heat dissipation of PCBA and cause high circuit temperatures, thus
affecting normal tool operation.

Conformal Coating can have a negative impact on the PCBA area, affecting the normal operation of the
tool. It is therefore important to choose premium conformal finishing, as it can ensure the quality and
stability PCBA.