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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 atomical crystal 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 either direct aluminum or aluminum oxide reduction.

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, good strength, resistance to chemicals, resistance to heat, resistance to electrical current, and low dielectric loss. This makes it an excellent substrate for large-scale 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 the development of substrates. The most popular substrates today are fiber substrates, FR-4 aluminum substrates, and Copper substrates.

You can improve and refine your industrial requirements. However, when the performance of traditional substrates is not sufficient to meet these demands, you will have to consider other 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 the ceramic. A ceramic piece greater than 1 mm in thickness has a strength limit of 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 thermal conductivity of aluminum-based substrate is lower than traditional ceramic substrates, at around 1 to 2. The thermal conductivity (or thermal conductivity) of copper itself is 383.8 W/mK. However the thermal conductivity (or thermal conductivity) of the aluminum-based substrate is only about 1.0W/mK. That is better. 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 temperature changes can cause the PCB to expand greater than the packaging. This causes the problem with desoldering. CTE for aluminum nitride ceramic substrate can be lowered to 4-5ppm/C. The CTE is more visible and close to the chip’s expansion ratio, so it will effectively prevent the situation.
Aside from the fact that the aluminum nitride substrate ceramic does not include organic components, it also doesn’t contain a copper layer. Therefore, this layer can be used long-term in a low atmosphere and can even be used to make aerospace 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 assembly such as line/pitch can be made. A resolution as low as 20m can make it possible to design and build small, lightweight, 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.

Lemondedudroit advancedmaterial Tech Co., Ltd., (Lemondedudroit), a professional Aluminum Nitride maker with over 12+ years in chemical product development. You can contact us to request high quality aluminum-nitride.

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