What is AIN

By Bester PCBA

Last Updated: 2023-08-14

Table of Contents

What is AIN

AIN, short for Aluminum Nitride, is a ceramic substrate material widely used in the PCB. It possesses exceptional properties that make it highly desirable for various applications. Aluminum nitride exhibits excellent heat conductivity, mechanical strength, and resistance to erosion, making it an ideal choice for high-power LED devices. Additionally, it boasts a small density, low dielectric constant, and non-toxic characteristics.

One of the key advantages of AIN is its remarkable thermal conductivity, which ranges from 180W to 220W/m.K. This value surpasses that of other materials like Alumina (Al2O3). As a result, AIN is frequently employed as a substrate material for high-power LED devices, ensuring efficient heat dissipation and maintaining device performance under elevated temperatures.

AIN substrates can be processed into intricate shapes, allowing for versatility in design and application. They find utility in various industries, including automotive electronics, aerospace, communications, and power electronics. Notably, AIN substrates are commonly utilized in the production of high-accuracy clock oscillators, voltage controlled oscillators (VCXO), temperature compensated crystal oscillators (TCXOs), and semiconductor coolers.

During the manufacturing process, AIN substrates undergo a crucial step known as baking or curing. This process takes place in a controlled atmosphere baking oven, typically with a nitrogen (N2) environment. The oven’s oxygen content is meticulously regulated to maintain levels between 6-10 ppm O2. It is worth noting that during baking, the copper material must not come into contact with any kiln furniture or kiln aids.