What is the common sense for purchasing power module injection molds?

Author: MULAN - Plastic Molding Manufacturer

When choosing a power module injection mold, users need to consider in which environment the injection mold will be used. In addition to paying attention to the parameters of the shell temperature, users should also pay attention to whether other parameters meet the requirements. As far as the operating temperature of the power module is concerned, there are differences at home and abroad.

Domestic manufacturers generally set it to be used within a certain ambient temperature range, while foreign manufacturers generally set it to the shell temperature of the power module. On the other hand, if certain manufacturers are able to accomplish civilian, industrial, or military grade products, the operating temperature of the company's products highlights the manufacturer's specific category. Although the quality of a power module cannot be measured by case temperature, the module acts like a heat source that can have a large effect on circuitry and other components.

When the module shell temperature reaches 125°C, the internal temperature is best controlled at 150°Within C, but it is difficult to reach this level now. The main reason is that power modules are miniaturized, power density is getting higher and higher, and heat dissipation problems are becoming more and more significant. Second, the hotter a power supply is, the more heat it dissipates.

Therefore, more and more power module injection mold manufacturers choose metal casing, which can better promote heat dissipation and reduce temperature. The case temperature is closely related to the temperature of the internal components of the product and determines the lifespan and reliability of the module. High temperatures accelerate the aging of components and control the temperature range, which can extend service life and reduce failures.

Third, the power module uses different heat dissipation methods under different application occasions and ambient temperatures. If it is used at an ambient temperature of 30 or 40 degrees, the case temperature will reach 70 or 80 degrees. This is considered normal use.

Natural ventilation, fans and radiators can be used in unenclosed spaces. Suppose the maximum temperature of the power module shell is 85°C, at 50°When operating at an ambient temperature of C, adding a small radiator can reach about 85°C. When using a large radiator, at 60°When operating at an ambient temperature of C, it can be guaranteed to be at 85°C or so.