What should be paid attention to when installing the electronic heat sink?

Let's let Huaguang electronic radiator manufacturer take a look at what we need to pay attention to when installing the electronic radiator? As the heat dissipating parts in the electrical appliances, the heat dissipating effect of the electronic heat sink can be brought into full play only by standard and reasonable operation in the installation process; if not installed properly, the heat dissipating effect will be poor, and the electrical components will be seriously damaged.

1. When the actual junction temperature of the semiconductor power device is lower than the junction temperature, the electronic heat sink with small volume and light weight shall be selected.

2. The heat dissipation of the electronic heat sink is closely related to the installation process. During the installation, the contact area between the power device and the heat sink should be increased as much as possible to reduce the contact thermal resistance.

3. Try to reduce the contact thermal resistance as much as possible. When installing, add a thin conductive silicone grease between the power device and the heat sink, which can reduce the thermal resistance by 25-30%.

4. During installation, heat conduction or insulation gasket shall be placed between the device and the electronic radiator. Low thermal resistance materials such as copper foil, aluminum foil or mica, polyester film, etc. are suitable.

5. When installing a device, its mounting hole (or group hole) shall be placed at the center (L / 2) of the radiator base surface. When two or more devices are installed, the mounting hole (or group hole) is located at the evenly distributed (L / 2n) position above the center line of the base surface of the heat sink.

6. When the electronic radiator is tightly connected with the device, the torque of each connecting screw shall be the same.

7. After the electronic heat sink and electrical parts are installed, it is not suitable to machine or reshape the electrical parts and heat sink, otherwise it will generate stress and increase the contact thermal resistance.

8. Single sided fin electronic heat sink is suitable for natural air cooling outside the equipment (such as installed outside the chassis), which is beneficial to the ventilation and heat dissipation of power devices and reduces the temperature rise inside the machine.