High-Performance Ceramic Printed Circuit Boards from Reliable China Suppliers and Factory
Main Ceramic PCB Types
From the level of substrates, ceramic PCBs include the aluminum, AIN, BeO, Si₃N₄, hybrid substrate boards, etc. From the layers of the circuit boards, there are the single-layer, double-layer, and multilayer.
Ceramic PCBs are usually made up of ceramic cores, with alumina and aluminum nitride (AIN) being two of the primary types. Both of these kinds of boards provide better thermal performance than metal core PCBs because there isn’t a need for an electric layer between the core and the circuits. Find out more about these two main kinds of ceramic PCB types below:
AIN (Aluminum Nitride)
For high thermal conductivity, aluminum nitride boards are ideal, providing greater than 150 w/mK. AIN is a top choice for many other reasons as well, such as its good dielectric properties, non-reactiveness with various semiconductor process chemicals and low CTE.
Alumina (Aluminum Oxide)
Since aluminum nitride boards are expensive, those opting for less expensive ceramic PCBs may find themselves with Alumina boards. These PCBs are made out of aluminum oxide and offer about 18-36 w/mK.
Advantages of Ceramic PCB
Frequently Asked Questions (FAQ)
What are the primary types of ceramic PCBs?
The primary types of ceramic PCBs are Alumina (Aluminum Oxide) and Aluminum Nitride (AlN). Other substrate options include BeO, Si₃N₄, and hybrid substrate boards.
Why do ceramic PCBs offer better thermal performance than metal core PCBs?
Ceramic PCBs provide superior thermal performance because they do not require an electrical insulation layer between the core and the circuits, allowing direct and more efficient heat dissipation.
What is the thermal conductivity of Aluminum Nitride (AlN) PCBs?
Aluminum Nitride (AlN) boards offer high thermal conductivity, providing greater than 150 w/mK, making them ideal for high-temperature applications.
Why choose Alumina boards over Aluminum Nitride boards?
Alumina boards are a cost-effective alternative to Aluminum Nitride boards. While AlN offers higher thermal conductivity, Alumina provides a budget-friendly solution with a thermal conductivity of about 18-36 w/mK.
What layer configurations are available for ceramic PCBs?
Ceramic PCBs are highly versatile and can be manufactured in single-layer, double-layer, and multilayer configurations depending on the design requirements.
What other advantages does AlN offer besides thermal conductivity?
In addition to high thermal conductivity, AlN features excellent dielectric properties, a low coefficient of thermal expansion (CTE), and high resistance to various semiconductor process chemicals.