Silicone gel is an indispensable part of the application of silicone materials. For example, the encapsulation protection of IGBT components uses silicon gel. Modern industrial electronic equipment has fewer and fewer mechanical structures, but the degree of electrification has been greatly improved. Silicon gel can protect sensitive electronic components from moisture erosion and achieve functions such as moisture resistance and corrosion resistance.




IGBT module structure diagram
The advantage of silicone gels is that they are soft in texture and do not place mechanical stress on electronic components. Even at temperatures between minus 50 ° C and the highest temperature at which the device operates, its softness properties remain unchanged. The specially modified silicone gel can even withstand extreme temperatures between minus 100 ° C and 250 ° C, which is unmatched by other materials. In the extremely high and low temperature range, hard packaging materials such as epoxy resin will shrink and expand, and eventually sensitive electronic components will be damaged by stress changes.




Silicon gel real shot
In addition, silicone gels also have advantages in terms of processing. Low viscosity silicone rubber material can be cast on the surface of the circuit board. At this point, the silicone gel has the consistency of a gel and is firmly adhered to the surface of the circuit board. (The industry's oldest brother, WACKER, has invented an effective method for compressing silicone gels. The high-temperature expansion of silicone gels is now effectively controlled.)




Silicon gel potting real shot
In general, silicone gel is currently widely used as a moisture-proof, shock-absorbing and insulating coating and potting material for electronic components, and it plays a role in protecting electronic components and assemblies from dust, moisture, shock and insulation. Silicone gel is an ideal inner coating material for transistors and integrated circuits, which can improve the bench rate and reliability of semiconductor devices. Silicone gel can also be used as an elastic adhesive for optical instruments. Transparent organic silicon gel is used for potting electronic components, which can not only play a role of shockproof and waterproof protection, but also can see the components and can use the probe to detect the failure of the component and replace it. Seal repair.


In the future, the application of silicone gels still has broad prospects!