Application of thermal conductive silica gel sheet

In our daily life and work, the application range of thermal conductive silicone sheets is very wide. It is widely used in electronic and electrical products control board, motor, high-end industrial control and medical electronics, mobile and communication equipment, high-speed mass storage drives, computer hosts, laptops, hybrid car battery packs and other fields although the installation of the interface will be different, but the installation of attention to details are consistent. In practical applications, is the thermal conductive silicone sheet first attached to the chip or first attached to the radiator?

Thermal conductive silicone sheet where to stick

Thermal conductive silicone sheet can be first affixed to the chip can also be first affixed to the radiator, generally is first affixed to the chip, the specific first affixed to the assembly process of the product to determine. After tearing off one side of the release film, the side torn off, towards the radiator or chip, the thermal conductive silicone sheet aligned with the position of the radiator, to apply a certain pressure, so that the thermal conductive silicone sheet can be fixed, while the more uniform, the heat dissipation effect will be better.

Can heat-conducting silicone sheet be superimposed?

The manufacturer recommends not to use heat-conducting silicone sheets superimposed. Superposition has great influence on thermal conductivity. Thermal conductive silicone sheet is specially designed for the use of gaps to transfer heat, which can fill the gaps to complete the heat transfer between the heating part and the heat dissipation part. There is a certain gap between the stacked thermal conductive silicone sheet, and the thermal resistance will increase, thereby affecting the thermal conductivity. It has been tested that the thermal resistance of the thermal conductive silicone sheet after superposition is about doubled, and the thermal resistance of the thermal conductive silicone sheet with glass fiber superposition is more than doubled, which seriously affects the performance of the thermal conductive silicone sheet.