Aluminum
nitride (AlN) is useful for high power circuits which require
a lot of heat dissipation. The thermal conductivity is 80-100
W/m-K compared to alumina which is 30 W/m-K. It can be polished
with a finish similar to alumina and is generally easier to dice
than 99.6% alumina. Alkaline solutions such as many detergents
can form a surface oxide which may be detrimental to the performance
or appearance of the circuit. Precision Surface Technology’s engineers
will discuss the proper processing techniques to assure our customers
circuits have the optimum performance.
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