Why are ceramic PCB more expensive than ordinary PCB?
The article talks about what is ceramics？ Describes why ceramic circuit boards are more expensive than ordinary PCBs from substrate properties.
Why are ceramic PCB more expensive than ordinary PCB?
Ordinary PCBs are usually made of copper foil and substrate bonded together, and the substrate materials
are mostly glass fiber (FR-4), phenolic resin (FR-3), and other materials. The adhesives are usually
phenolic, epoxy, and so on.
Ceramic PCBs are metal oxide ceramics such as aluminum oxide (Al2O3), beryllium
oxide (BeO), and aluminum nitride (AlN). The performance of the ceramic circuit board and PCB two is
quite different.
Plate rigidity
Ordinary PCBs are made of chemical fiber materials. They are restricted by environmental, temperature,
processing technology, and other conditions, and their rigidity is far inferior to ceramic substrates.
The latter has stronger thermal stability and a smaller thermal expansion coefficient and can be used in
harsher environments.
Thermal performance
Ceramic substrates have excellent heat dissipation performance and are very suitable for high-power
devices. However, Ordinary PCBs are limited by material technology and are far less outstanding than
ceramic materials.
Insulation properties
The ceramic substrate has good insulation and high voltage resistance, which can effectively protect
personal safety and equipment.
The bonding strength between the ceramic substrate and copper foil is strength.
The copper foil will not fall off using adhesive technology. It hugely improves the board's
reliability.
In summary, the ceramic substrate is a new PCB material with superior performance. Because of its
material source, manufacturing process, and market usage, its cost is currently higher than that of
ordinary PCBs.
