Ceramic PCB

A printed circuit board made of ceramic, which includes extremely thermally conductive elements like alumina and aluminium nitrite, is known as a ceramic PCB. Additionally, beryllium oxide has the ability to quickly dissipate heat from hot patches throughout the entire surface.

Types of ceramic PCBs

Based on the process of production, there are three main varieties of ceramic PCBs in the electronic industry.

  1. High-temperature ceramic PCB
  2. Low-temperature ceramic PCB
  3. Thick film ceramic PCB

Advantages of ceramic PCB

The main advantage of ceramic over more traditional materials like FR-4 and metal-clad PCB is heat dissipation. Heat transfer through the boards is much more effective because the elements are placed directly on them and there isn’t an isolation layer. Additionally, ceramic material has a relatively low thermal expansion coefficient (CTE), which opens up more design options for PCBs, despite its ability to withstand high operating temperatures (up to 350°C).

The following characteristics distinguish ceramic PCBs from conventional PCBs, which have substrates made of epoxy glass fiber, polyimide, polystyrene, and phenolic resin:

  • Excellent thermal conductivity
  • Resist chemical erosion
  • Compatible mechanical intensity
  • Make high-density tracing simple to use 
  • CTA component compatibility

Because ceramic PCB has a high thermal coefficient of expansion, it is employed extensively in the electronic industry. When compared to the majority of connection metals employed, the ceramic base thermal conductivity emerges as being relatively close to silicon. It goes without saying that it can function admirably as isolator for a very long time. As a result, ceramic PCB has the best property for its strong thermal conductivity even at high temperatures, allowing it to be employed in a variety of devices.

Because ceramic is used, the dielectric property is steady, and the balance can shift into a little radio frequency loss, expanding the application of electronic devices. As a result, the chemical resistance will be replaced by resistance to everyday moisture, solvents, and consumables. 


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