AlN Thermal Conductive Sheet Aluminum Nitride Ceramic Substrate

Introduction to Aluminum Nitride Ceramic Substrates
Aluminum Nitride (AlN) ceramic substrate is an advanced material designed for high performance electronics and semiconductor applications. It is made by sintering aluminum nitride powder at high temperatures and other processes, and has excellent thermal conductivity, electrical insulation, and mechanical stability. Aluminum nitride substrates are not only able to withstand high-temperature environments, but are also widely used for their chemical stability and low coefficient of thermal expansion. Its low density of approximately 3.26 g/cm³ makes this material relatively lightweight and ideal for application scenarios where weight reduction is required. In addition, high purity (over 99%) aluminum nitride substrates can be further optimized for their thermal conductivity and electrical properties, meeting the demanding material performance requirements of high-end electronics.

AlN Thermal Conductive Sheet Aluminum Nitride Ceramic Substrate
 

Features and Benefits of Aluminum Nitride Ceramic Substrates
Aluminum nitride ceramic substrates are known for their excellent thermal conductivity (170-220 W/m-K), which makes them ideal for efficient heat dissipation, especially in power modules, LEDs and other high-power devices. It maintains excellent electrical insulation properties even in high-temperature environments, ensuring electrical safety and reliability. Aluminum nitride substrates have a coefficient of thermal expansion close to that of silicon (4.5-5.0 ppm/°C), which helps to reduce stress caused by temperature changes and improve product durability. The material also offers good chemical stability, including resistance to acid and alkali corrosion and molten metal attack, which ensures structural integrity in long-term use. Although brittle, aluminum nitride substrates are stiff and strong enough to handle a wide range of industrial applications, and their lightweight properties help reduce overall system weight.

Specifications of Aluminum Nitride Ceramic Substrates

 
Application of Aluminum Nitride Ceramic Substrates
Aluminum nitride ceramic substrates find a wide range of applications in several industries due to their excellent properties. In electronics and semiconductors, they are commonly used to manufacture heat sinks, power module base plates, and to provide galvanic isolation while enabling efficient heat transfer. For high power LEDs, Aluminum Nitride substrates effectively manage heat and enhance brightness and lifetime. In the automotive industry, aluminum nitride substrates are used in sensor assemblies and ignition system components to withstand extreme temperatures and corrosive conditions. The telecom industry utilizes its low dielectric loss and excellent thermal stability to maintain the integrity of high-frequency signals, especially in microwave equipment and satellite communication systems. Additionally, aluminum nitride substrates have applications in certain medical implants or diagnostic equipment due to their biocompatibility and resistance to body fluids. The aerospace and defense sectors value its ability to work reliably under extreme conditions, such as in avionics and radar systems.

Company Profile

Company Profile

Luoyang Tongrun Nano Technology Co. Ltd. (TRUNNANO) is a trusted global chemical material supplier & manufacturer with over 12-year-experience in providing super high-quality chemicals and nanomaterials, including boride powder, nitride powder, graphite powder, sulfide powder, 3D printing powder, etc.
 
The company has a professional technical department and Quality Supervision Department, a well-equipped laboratory, and equipped with advanced testing equipment and after-sales customer service center.
 
If you are looking for high-quality Aluminum Nitride Ceramic Substrates please feel free to contact us or click on the needed products to send an inquiry. 
 
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Packaging

Shipment Term
By air, by sea, by express, as customers request.
 
FAQs of Aluminum Nitride Ceramic Substratesr

Q1: Why are AlN ceramic substrate plates superior to other ceramics?
A1: AlN (aluminum nitride) ceramic substrate plates stand out due to their significantly higher thermal conductivity compared to conventional ceramics like aluminum oxide (Al₂O₃). This enhanced heat dissipation capability is crucial for applications that generate a lot of heat. Moreover, AlN substrates offer excellent electrical insulation, chemical resistance, and a coefficient of thermal expansion (CTE) closely matching silicon, which helps reduce thermal mismatch stresses during temperature changes.

Q2: In which areas are AlN ceramic substrate plates typically applied?
A2: AlN ceramic substrates find extensive use in:
Heat management solutions, such as heat sinks for efficient cooling.
Power electronics, serving as substrates for power modules, LEDs, laser diodes, RF devices, and microwave components where thermal performance is critical.
Automotive sector, including sensors and ignition systems designed to withstand harsh conditions.
Telecommunications, particularly in microwave devices and satellite communication systems that benefit from low dielectric loss and thermal stability.
Medical field, with applications in implants and diagnostic equipment that require biocompatibility and thermal-electrical stability.
High-temperature environments, such as furnaces, kilns, and components in optical windows and laser technology.

Q3: Is customization available for AlN ceramic substrate plates?
A3: Yes, customization of AlN ceramic substrate plates is possible. Manufacturers can tailor the dimensions (length, width, thickness), surface finish, and even adjust material composition to meet specific application needs, ensuring optimal performance for specialized uses.

Q4: What is the cost situation regarding AlN ceramic substrate plates?
A4: Typically, AlN ceramic substrate plates come at a higher price point than simpler ceramics due to their advanced properties and complex manufacturing processes. The exact cost can fluctuate based on factors such as size, shape, and the level of customization required.

Q5: What types of surface finishes can be found on AlN ceramic substrate plates?
A5: Surface finishes for AlN ceramic substrates range from rough to highly polished, including optically smooth surfaces. Polished finishes are especially common in precision applications that demand minimal surface roughness and high accuracy. The choice of finish depends on the specific requirements of the intended application.