Aluminum Nitride

Aluminum nitride (AlN) is a high thermal conductivity electrical insulator ceramic. AlN provides the same high thermal and electrical  performance as beryllium oxide (BeO) does at a more economical cost without the potential toxicity concerns. Sienna’s ST-200 AlN can provide excellent solutions to the thermal management problems  in microwave electronics and high power electronics applications due to its exceptionally high thermal conductivity.  ST-200 AlN’s matching coefficient of thermal expansion (CTE) provides a compatible mounting surface for silicon (Si), silicon carbide (SiC), gallium nitride (GaN) and gallium arsenide (GaAs) components in power transistor and microwave packaging applications.  When a better CTE match SiC  required over a wide temperature range for harsh environment electronics Sienna’s ST-100 AlN is the answer. Sienna’s ST-170 AlN is available as tape cast substrates in various sizes and configurations. Sienna-ACPD also offers high thermal conductivity extruded aluminum nitride (AlN) products in addition to its existing dry pressed and cold isostatic pressed product lines. Aluminum nitride has many other uses due to its high thermal conductivity and its high chemical resistance including radio frequency (rf)/microwave windows and collector rods for high power microwave tubes, microwave terminations and resistors, heat sinks TO-insulators for high power semiconductors, metal melting and crystal growing crucibles, evaporation boats, thermocouple  insulators, and grinding media.

Sienna Technologies the only vertically integrated American manufacturer of aluminum nitride ceramic products that include shape forming by dry pressing, isopressing, extrusion, tape casting, and hot pressing; machining: metallization, and brazing operations.  Sienna provides full  metallization and brazing for AlN ceramics to give you one-stop shopping. We manufacture and stock many standard sizes and shapes including rods, plates, tubes, tiles, heat sinks TO-insulators, crucibles, evaporation boats, thermocouple  insulators, and grinding media. Should you need a custom component we will also work with you from the design stage to manufacture custom components to your specifications. Through our strategic alliances with precision machining facilities, we can deliver the exact component you need.

Sienna’s Technical Team is ready to help you implement AlN in your current and next generation of your products. Contact us for applications assistance and fast prototyping.