Aluminum Nitride Substrates, AlN Substrates

Product Information

Aluminum nitride (AlN) is a new type of ceramic material with excellent comprehensive properties. Aluminum Nitrides (AlN) combine high thermal conductivity with strong electrical resistance, making AlN an excellent solution for many electronic applications. Unlike most electrically insulative materials — which are often also thermally insulative — AlN allows electrical systems to dissipate heat quickly in order to maintain maximum efficiency. Aluminum Nitride (AlN) is an excellent material to use if high thermal conductivity and electrical insulation properties are required, which makes it an ideal material for use in thermal management and electrical applications. Additionally, AlN is a common alternative to Beryllium Oxide (BeO) in the semiconductor industry as it is not a health hazard when machined. Aluminum Nitride has electrical insulation properties and a coefficient of thermal expansion that closely matches that of Silicon wafer material, making it a useful material for electronics applications where high temperatures and heat dissipation are often a problem. The series of excellent characteristics are considered to be the ideal materials for highly concentrated semiconductor substrates and electronic device packaging.

Synonyms

Aluminum nitride; Azanylidynealumane; Nitridoalumane; Nitriloalumane; Nitridoaluminum

Aluminum Nitride (AlN) Substrates Specification

Dimensions

Per your request or drawing

We can customized as required

Properties（Theoretical）

Aluminum Nitride Properties

Hot Pressed Aluminum Nitiride

Direct Sintered Aluminum Nitiride

Advantages

Over five times the thermal conductance of Alumina

Enables high performing devices to function faster and better in smaller devices

No toxic issues of beryllia

Good plasma resistance

Excellent thermal shock performance

Aluminum Nitride Machining

Aluminum Nitride can be machined in green, biscuit, or fully dense states. While in the green or biscuit form, it can be machined relatively easily into complex geometries. However, the sintering process that is required to fully densify the material causes the Aluminum Nitride body to shrink approximately 20%. This shrinkage means that it is impossible to hold very tight tolerances when machining AlN pre-sintering. In order to achieve very tight tolerances, fully sintered material must be machined/ground with diamond tools. In this process a very precise diamond coated tool/wheel is used to abrade away the material until the desired form is created. Due to the inherent toughness and hardness of the material, this can be a time consuming and costly process AlN commonly comes in substrates up to 1 mm thick, which can easily be laser cut. It can also come in thicker forms, however, it can be difficult/costly to manufacture in small quantities if the part requires custom material or significant machining.

Applications of Aluminum Nitride Substrates

•Heat sink substrate, LED package substrate, a semiconductor substrate, thin-film circuit •substrate, power resistor substrate

•Opto-electronics

•Dielectric layers in optical storage media

•Electronic substrates, chip carriers where high thermal conductivity is essential；

•Military applications

• High power electrical insulators

• Power electronics

• Heat spreaders

• Heat sinks

• Water cooled heatsinks

• Laser heatsink power rectifiers

• Laser components

• Aerospace, power electronics

AlN ceramic products are mainly used in high-density hybrid circuits, microwave power devices, semiconductor power devices, power electronic devices, optoelectronic components, semiconductor refrigeration and other products as high-performance substrate materials and packaging materials.

Packing of Aluminum Nitride Substrates

Standard Packing:

Sealed bags in carton boxes. Special package is available on request.

As a ceramic material, AlN is quite fragile in a lot of cases. The AlN Substrates are usually held in plastic bags by vacuum, and protected with heavy foam.

ATTs’ AlN Substrates is carefully handled to minimize damage during storage and transportation and to preserve the quality of our products in their original condition.

Chemical Identifiers