Aluminum Nitride Ceramic Substrate: Is A Better Choice And An Irresistable Trend

What is aluminum Nitride?
The covalent bonding compound aluminum nitride (also known as covalent aluminum nitride) is an atomic substance that belongs to the diamond-like nitride. Aluminum nitride formula AlN. Aluminum nitride formula AlN can replace tantalum dioxide and alumina with a treatment that uses metal. Aluminum nitride could be obtained by reduction of aluminum dioxide and carbon, as well as by directly aluminum nitride.

The ceramic properties of Aluminum Nitride Ceramic:
Aluminium nitride is an aluminum powder with high purity. The particles are small and have high activity. This raw material can then be used for the production of a highly thermallyconductive aluminum Nitride ceramic substrate. Aluminium nitride ceramic is highly thermally conductive, has low expansion coefficient and high strength. This makes it a suitable large-scale substrate or packaging material for integrated circuit heat sinks. Aluminum nitride ceramic substrate has high hardness, exceeding the traditional Alumina. It’s also a wear-resistant type of ceramic material.
Information regarding the aluminum Nitride Ceramic Substratum:
China is well-known for its long history in developing substrates. Fiber substrates as well as FR-4, copper substrates and aluminum substrates were the most common.

The refinement and improvement in industrial requirements has led to the need for new substrate performance. In this process, people will be looking at a range of options.

LAM technology is the best option for an aluminum-nitride ceramic substrate. LAM (Laser high–peed activation metallicization) allows metal layers to be more strongly bonded to ceramic. The ceramic piece greater than 1mm thickness can be up to 45 Pa. You can customize the thickness and resistance of the metal film layer in aluminum nitride substrate.
Is the aluminum Nitride ceramic substrate more expensive that other substrates.
The aluminum-based substrate has a thermal conductivity that is comparable to that of traditional ceramic substrates. This ranges between 1 to 2W/mk. Although the thermal conductivity in copper is 383.8 W/mK itself, the thermal conductivity at the layer that acts as an insulation is just 1.0W/mK. Which is higher. 1.8W/mK. This aluminum nitride ceramic substrate is more thermally conductive and has data of 170 to 230-W/m.k.

Let’s take, for example, the coefficient of thermo expansion (CTE). LED lighting uses a mainstream substrate with a thermal conductivity (CTE) of approximately 1417ppm/C. While the CTE on the silicon chip is at 6ppm/C. Excessive temperature differences and drastic changes in temperature can cause the PCB to expand greater than the packaging. This causes the problem with desoldering. CTE of aluminum nitride ceramic substrate can be lowered to 4-5ppm/C. The CTE is more visible and close to the expansion rate of the chip. Thus, this situation is effectively avoided.
Aside from the fact that the aluminum nitride substrate ceramic does not include organic components, it also does not contain a copper layer. Therefore, this layer can be used long-term in reducing environments and is ideal for aircraft equipment.

A wide range of aluminum-nitride ceramic substrates can be found on the market. Their low frequency loss (and low dielectric consistency) allow high-frequency circuits to be constructed and assembled. Additionally, high-density line/pitch (L), assembly and design can be made. A resolution as low as 20 nm is possible. With the current trends of small and light it makes it ideal for small, lightweight, small, light and thin devices.

China is the largest market for ceramic substrates. It has become more important for domestic PCB companies to pay attention to the issue, as it allows them to achieve the localization for aluminum Nitride ceramic substrates. It is easy to see the advantages of aluminum-nitride ceramic substrates.

Cataniadagiocare advancedmaterial Tech Co., Ltd., (Cataniadagiocare), a professional Aluminum Nitride maker with over 12+ years in chemical products development research and manufacturing. Contact us if you need high-quality aluminium nitride.

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