Ceramic substrate refers to a special process board in which copper foil is directly bonded to the surface of an alumina (Al2O3) or aluminum nitride (AIN) ceramic substrate (single or double-sided) at high temperature. Ceramic substrates have become the basic materials for high-power power electronic circuit structure technology and interconnection technology.
It is widely used in the manufacturing of the electronics industry, and has become an important part of the manufacturing and production of electronic products due to its many advantages such as good thermal conductivity, strong high-voltage resistance, and stable chemical properties.
So, how to distinguish the quality of ceramic substrates?
1. Look at the material parameters of the ceramic substrate. The quality-guaranteed ceramic substrate should be made of substrate materials with stable chemical properties (high temperature resistance, strong acid and alkali resistance), high thermal conductivity, etc. Manufacturing Instructions for details.
2. Look at the fine workmanship of the ceramic substrate. High-quality ceramic substrates require strict requirements on the distance between electronic components and the tightness of bonding. Of course, the high flatness of the appearance and flat edges of the board can also reflect its processing quality.
3. Pass the trial. A major advantage of the ceramic substrate is its good thermal conductivity. You can let the plate work for a period of time, then cut off the power supply to stop its work, and test its temperature and the current flow rate of the entire circuit. If the temperature is too high, it means that its thermal conductivity is not good, not the quality. Excellent ceramic substrate.
4. By understanding the information of ceramic substrate manufacturers. The manufacturers of ceramic substrates are formal and have various qualifications, which often means that their production and manufacturing are through formal and strict production processes and requirements, and the selection of materials will also be guaranteed; of course, it is also necessary to understand the corresponding requirements of ceramic substrates. Brand reputation and user evaluation, which can also directly reflect the quality of ceramic substrates to a certain extent.
