Mi Box Heat Transfer Solution

Mi Box Heat Transfer Solution

The appearance of the millet box is simple and elegant, and the shell is fixed and closed by some plastic buckles. After disassembling, you can see the internal electronic components and heat dissipation scheme of the box, and you can clearly see that there are some thermally conductive silicone sheets distributed on the shell, so as to transfer the internal heat to the shell for heat dissipation. Generally speaking, when household appliances are working normally will generate heat. If it is not conducted, the temperature of the electrical junction surface and electronic components will be too high, which will affect the efficiency, stability and service life of the product. The millet box transfers the heat of the chip to the shell through the thermal conductive silicone gasket. , through natural convection heat dissipation, so there is no need to worry about burning out the Xiaomi Mi box due to the heat of the casing. At present, the heating of the Xiaomi box is normal, because the ARM chip itself is a low-power chip. Even so, the surface of the chip may still have an operating temperature of no more than 70 degrees. The Xiaomi box itself, due to its size (and probably noise considerations), does not add a fan, but uses a heat sink. At the same time, its circuit board has a high degree of craftsmanship, so if it is not higher than 70 degrees, there is generally no problem.
Thermally conductive silicone gaskets fill the air gaps between heat-generating components and heat sinks or metal bases, and their flexible, resilient characteristics allow them to be used to cover uneven surfaces. Heat is conducted from discrete components or the entire PCB to the metal enclosure or diffuser plate, increasing the efficiency and lifespan of heat-generating electronic components. The application of thermally conductive silicone sheet on the Xiaomi box enables it to dissipate heat faster and last longer.

thermal pads
thermal gel
thermally conductive pads

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