Advanced Processing Technology
The processing technology of aluminum nitride substrate mainly includes cutting, drilling, grinding, polishing, and metallization.
- Cutting: Cut large ceramic plates into smaller sizes.
- Drilling: Processing through holes or blind holes on the substrate.
- Grinding and polishing: Improving flatness and smoothness of the substrate surface.
- Metallization: Deposition of metal layers on the substrate surface for electrical connection.
Your Reliable Partner for Aluminum Nitride Substrates
We have extensive experience in aluminum nitride substrates and can customize various shapes and sizes to meet your needs. Our expertise isn’t only in theoretical knowledge, but also in rich manufacturing experience since 2008.
Our aluminum nitride substrates can help you improve the performance of your electronic devices. They have excellent thermal conductivity, electrical insulation, and mechanical strength, as well as a coefficient of thermal expansion that matches Si, allowing them to quickly dissipate heat, protect valuable components, and improve device reliability and service life.
If you need aluminum nitride substrates, please contact us today.
By Features
You can find various types of aluminum nitride substrates in different sizes, shapes and processes.
The most common sizes are 50.8*50.8mm, 114*114mm and 140*190mm.
Large sizes are more difficult to make. Such as φ150mm aluminum nitride wafers.
The surface is polished to achieve extremely high smoothness and flatness.
Use laser cutting, drilling or engraving to achieve complex structures.
What is the Processing Difficulty of Aluminum Nitride Substrate?
Aluminum nitride substrates are challenging to work on in the following 2 ways.
1. High material hardness and brittleness
Aluminum nitride is a high-hardness, high-brittle ceramic material with a hardness close to that of diamond. This characteristic makes traditional processing methods difficult to apply, and requires the use of high-hardness tools (such as diamond tools) and special processing techniques (such as laser cutting). During the processing, the slightest carelessness may cause material breakage or edge damage, so the control requirements for processing equipment and process parameters are extremely high.
2. High-precision requirements
Aluminum nitride substrates are usually used in precision fields such as high-power electronic devices and radio frequency devices, and have very high requirements for dimensional accuracy, surface flatness and finish. This places extremely high demands on the resolution, stability of processing equipment and the skills of operators.
Aluminum nitride substrates have significant advantages over other ceramic substrates (such as alumina, silicon nitride, beryllium oxide substrates, etc.). Below we will list the three most important ones.
- High thermal conductivity
The thermal conductivity of aluminum nitride substrates (≥170W/(m·K)) is much higher than that of alumina substrates (about 24 W/(m·K)) and close to that of beryllium oxide substrates (about 250W/(m·K)). However, beryllium oxide is toxic, which limits its application.
- Low thermal expansion coefficient
The thermal expansion coefficient of aluminum nitride substrate ((4-6)×10⁻⁶/℃)) is close to that of semiconductor materials (such as Si, SiC, GaN), which can reduce thermal stress and avoid device failure caused by temperature changes.
- Excellent electrical insulation
Aluminum nitride substrate has high resistivity and low dielectric constant, which can effectively isolate circuits and reduce signal loss.
Aluminum nitride substrates are widely used in high-power electronic devices, LED lighting, RF and microwave devices, automotive electronics, aerospace and other fields.
For example, in the field of LED lighting, aluminum nitride substrates can effectively dissipate the heat generated by LED chips and improve the luminous efficiency and life of LEDs. In the field of automotive electronics, aluminum nitride substrates can be used in engine control modules, power conversion modules, etc. to improve the reliability and safety of automobiles.
The price of aluminum nitride substrate is affected by many factors, such as size, thickness, process, accuracy, order quantity, etc. Generally speaking, the price of aluminum nitride substrate is higher than that of alumina substrate, but its excellent performance can bring higher cost performance. Please contact us for a quote.
Yes, the size and thickness of aluminum nitride substrates can be customized. Standard sizes include 50.8*50.8mm, 114*114mm, 140*190mm, etc., and the thickness range is usually 0.2-1mm. For special applications, larger sizes or thinner/thicker substrates can also be provided.