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Difference between thermal pad and thermal grease application

union tenda technology

2022-07-26

464

Both the thermal pad and the thermal grease can be used to assist the CPU to dissipate heat, so that the capacity of the CPU cooling system can be increased as much as possible. Then the difference between the two is, Shenzhen Union Tengda Technology Co., Ltd. for you to compare one by one, convenient for everyone Choose a thermal material that is more suitable for you.
Generally, it is not convenient to apply thermal grease. For example, the power supply part of the motherboard, the power supply of the main board is now relatively large, but the MOSFET is not flat, so it is not convenient to apply thermal grease. In this case, the thermal silica gel The film is the best choice. Secondly, the heat sink of the graphics card needs to be in contact with different parts of the graphics card. In this case, only the thermal conductive silicone film can be used. On the ordinary desktop CPU, we still recommend the use of thermal grease, because these parts are more disassembled than the hardware, using thermal grease to facilitate other operations in the future.
Other differences:
1. Insulation: Because of its fluidity and the addition of metal powder, thermal grease has poor insulation properties, and the thermal conductivity of the silica gel sheet is good. The electrical insulation index of 1 mm thickness is above 4000 volts.
2. Form: The thermal grease is a paste, and the thermal silica film is a sheet.
3. Usage: Thermal grease needs to be evenly applied, easy to dirty around the device and cause short circuit and damage to electronic components. The thermal conductive silicone sheet can be cut into different shapes and sizes at will, and the protective film can be directly applied. The tolerance is very high. Small and clean.
4. Thickness: The thermal grease can not fill the gap. The thickness of the thermal silica gel varies from 0.3mm to 10mm, which can fill the gap. Therefore, the thermal silica film is relatively widely used.
5. Thermal conduction effect: The thermal conductivity of the thermal grease is better than that of the thermal silica film in the case of the same thermal conductivity, because the thermal resistance of the thermal grease is small.
6. Disassembly and assembly convenience: It is convenient to re-install the thermal conductive silicone sheet, and it is not convenient to re-apply after the thermal grease is disassembled.

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