Thermal pad, also known as thermally conductive silicone pads, thermally
conductive silicone sheets, soft thermally conductive pads, thermally
conductive silicone gaskets, etc., are specially produced for the design scheme
of using gaps to transfer heat, which can fill gaps and complete the gap
between the heating part and the heat dissipation part. At the same time, it
also plays the role of insulation, shock absorption, sealing, etc., which can
meet the design requirements of miniaturization and ultra-thinning of equipment.
It has processability and usability, and has a wide range of thicknesses. It is
an excellent thermal conductive filling material. The following is a brief
introduction to the advantages and selection tips of thermal pad.
Advantages of thermally conductive pads
1. The material is soft, the compression performance is good, the thermal
conductivity and insulation performance are good, and the thickness can be
adjusted in a relatively large range, suitable for filling the cavity, with
natural viscosity on both sides, and strong operability and maintainability.
2. The main purpose of selecting the thermal pad is to reduce the contact
thermal resistance between the surface of the heat source and the contact
surface of the heat sink, and the thermal pad can fill the gap between the
contact surfaces well.
3. Since air is a poor conductor of heat, it will seriously hinder the
transfer of heat between the contact surfaces and installing a thermal pad
between the heat source and the radiatohttps://youtu.be/X4b6kejIcVYr can squeeze the air out of the contact
surface.
4. With the addition of thermal pads, the contact surface between the heat
source and the radiator can be better and fully contacted, and face-to-face
contact can be truly achieved. The temperature response can be as small as possible.
5. The thermal conductivity of the thermal pad is adjustable, and the
thermal conductivity is better.
6. The process tolerance of the thermal pad in the structure is bridged,
and the process tolerance requirements of the radiator and the heat dissipation
structural parts are reduced.
7. The thermal conductive gasket has the effect of shock absorption and
sound absorption and insulation performance (this feature needs to be added
with appropriate materials during production).
8. The thermal conductive gasket has the convenience of installation,
testing and reusability.
Tips for choosing thermal pad
1. First confirm the
dimensions of the heating electronic components and heat sink components and
select the thermally conductive silicone gasket based on the larger surface.
This increases the contact surface and can conduct heat conduction more
effectively.
2. Select a thermal pad with a suitable thickness, and select an
appropriate thickness according to the distance between the heat source and the
radiator. If it is a single heating device, it is recommended to use a thin
thermal pad, which can obtain lower thermal resistance and improve the heat
conduction effect; if multiple heating devices are gathered, it is recommended
to use a thick thermal pad, which can be used with A single thermal pad covers
multiple heat-generating components, even if the components are of different
heights.
3. The thermal pad has compressibility. When selecting the thermal pad, it
can be appropriately selected to be slightly thicker, so that after the thermal
pad is installed, it can properly reduce the thermal conductivity. Contact
thermal resistance, improve heat conduction effect.