Why do electronic components need potting? How to choose different types of potting compound?
Today, as electronic products continue to develop towards high reliability and integration, encapsulation has become an indispensable process in many electronic systems. Whether it is automotive electronics, power modules, industrial controls, or LED lighting, component encapsulation is widely used. But in practical engineering, some people still often ask: why do components need to be sealed? How to choose different types of sealant? Understanding these two issues is an important prerequisite for doing a good job in the reliability design of electronic products.Battery thermal conductive sealing adhesiveBattery thermal conductive sealing adhesiveChallenges faced by electronic components in real-world application environmentsComponents often operate stably under laboratory testing conditions, but in practical applications, they need to face long-term temperature changes, moisture intrusion, mechanical vibrations, and complex electrical stresses. High and low temperature cycling can cause thermal expansion and contraction of materials, and humid environments may lead to corrosion of solder joints and pins. Continuous vibration can accelerate solder joint fatigue. When these factors exist alone, their impact is limited, but in long-term operation, they often overlap and become the main cause of component failure.Why do electronic components need to be sealedThe primary function of sealing is environmental protection. After curing, the sealing adhesive forms a continuous and dense protective layer, which can effectively block water vapor, dust, and chemical pollutants, preventing performance degradation caused by moisture and corrosion. This is particularly crucial in outdoor equipment, automotive electronics, and industrial sites.Next is to enhance electrical safety. In high-voltage or high-frequency applications, the spacing between components continues to shrink, increasing the risk of creepage and discharge. Sealing adhesive has stable electrical insulation performance, which can fill gaps, evenly distribute electric fields, and improve the insulation reliability of the system.Sealing can also reduce the risks caused by mechanical vibration and impact. During the operation or transportation of…
More
