Basic knowledge points of thermally conductive silicone gaskets

When it comes to heat dissipation systems, people generally think of fans and heat sinks, often ignoring one of the less noticeable but important thermal interface materials - thermal conductive silicone sheets

Today, Yuffen will share with you 6 knowledge points that need to be paid attention to with thermally conductive silicone gaskets.

1. Thickness: Considering that the product has a certain compressibility, the thickness of the thermal conductive gasket is 0.5~1mm higher than the actual one;

2. The hardness of the thermal conductive silicone sheet is generally 20~30 degrees, and it must have 10~20% compressibility;

3. The color of the thermal conductive silicone sheet does not affect the thermal conductivity;

4. Viscosity: Thermal conductive silicone sheet is a material with a certain viscosity, you can do without adhesive backing, which will increase the thermal resistance of the silicone sheet and have a certain impact on the thermal conductivity effect;

5. Do you need to apply thermal grease after adding a thermal conductive silicone pad?

This is not needed! Thermal grease is suitable for direct contact between the heat sink and the chip, is to make the heat sink and the chip fit closely, improve the effect of heat dissipation, and the thermal conductive silicone sheet is used in the place where there is a large gap between the heat sink and the chip, just apply thermal grease is unable to make them contact, so the thermal conductive silicone sheet will be used, the use of thermal conductive silicone sheet does not need to apply thermal paste, if the use of silicone grease will make the heat dissipation effect worse.

6. Does the thermal conductive silicone sheet need to increase glass fiber?

Thermally conductive silicone sheet plus glass fiber is because the thinner the thermal conductive silicone sheet, the worse the stretch resistance and the voltage resistance will be reduced, and the thermal conductive silicone sheet is too thin, and it is easy to tear due to poor stretch resistance during use. Therefore, generally thinner thermally conductive silicone sheets will use glass fiber to enhance the tensile resistance and voltage resistance of the product.

The above is Yuffen's knowledge of thermal conductive silicone gaskets to introduce and share，Welcome to inquire!