Conformal Coating

Conformal coatings are widely used in PCBA applications, particularly in harsh environments with extreme temperature and humidity. These coatings provide excellent insulation, moisture-proofing, anti-vibration, dust-proofing, corrosion resistance, and more. This helps extend the life of the PCBA and protect it from external corrosion and contaminants. The conformal coating can be applied using either a brush or a spray method. The typical process involves coating side A, surface drying, coating side B, and curing at room temperature. The recommended coating thickness ranges from 0.1mm to 0.3mm, and all operations should be performed at temperatures above 16℃ and relative humidity below 75%. Read More

This glossary covers essential terms used in printed circuit board (PCB) manufacturing and design. It includes definitions of processes, materials, and components such as "Activating," which refers to treating materials to make them conductive, and "Additive Process," describing methods for creating conductive patterns. Other key terms include "Annular Ring" (copper pad area around a drilled hole), "Ball Grid Array" (a surface-mount package with solder balls), "Blind Via" (a hole connecting outer and inner layers without penetrating the entire board), and "Conformal Coating" (an insulating protective layer). Topics like PCB assembly, design tools (CAD/CAM), and thermal properties (CTE) are also discussed. Read More

Conformal coating is a protective barrier applied to electronic components to shield them from harsh environmental conditions. This lightweight layer allows moisture to escape from the PCB while enhancing the strength between conductors, enabling smaller and more compact designs. Common types of conformal coatings include silicone, acrylic, urethane, and parylene, each offering different levels of protection due to their distinct physical and chemical properties. The application of conformal coating can be done through dipping, selective robot coating, spraying, or brushing. After applying the coating, it must be cured, which can be done by air drying, oven drying, or UV light curing. The process involves cleaning the board, protecting sensitive areas, applying the coating, curing it, reassembling any removed parts, and conducting a full functionality test. Conformal coating not only protects the PCB but also enhances product reliability, making it increasingly common in consumer elec Read More

PCBA product storage periodPCBA is a printed circuit board with various components soldered on the surface. Many people pay attention to the reliability of its long-term, high-frequency operation, and need to understand its shelf life. Generally, the PCBA storage period is 2-10 years. Read More