Alumina Oxide is one of the most cost effective and widely used substrate materials in microelectronic applications.
The standard for thick film substrates is the 96% Alumina which is widely used in the manufacturing of hyrbrid microelectronic circuits. The availability, low cost and technical qualites of 96% Alumina make it a cost effective option for building hyrbid devices. The substrates offer excellent electrical insulating properties, mechanical strength, good thermal conductivity, chemical durability and dimensional stability.
The standard for thin film substrates is 99.6% Alumina which is often used for sputtered, evaporated and chemically vapor deposited metals for the circuit's generation. The high purity and smaller grain size of the 99.6% Alumina allow the material to be smoother with less surface defects and to obtain a surface roughness of less than 1u-in. 99.6% Alumina offers high mechanical strength, low thermal conductivity, excellent electrical insulation, good dielectric properties and good corrosion and wear resistence.
99.5% Alumina is used in applications where requirements for smaller grain sizes are not as critical. The surface finish of 99.5% will achieve a 2u-in max finish due to the larger grain size. This material has less flexural strength, thermal conductivity, dielectric strength and dielectric constant than 99.6% Alumina has. One of the current advantages is that it is available in larger sizes and thicknesses.
Opaque Alumina is a dark brown color often referred to as Black Alumina. This material is used in specialty applications.
99.6% Alumina standard sizes available:
4.50" x 4.50" square to 1.00" x 1.00" square in thicknesses from .005" thru .050"
99.5% Alumina standard sizes available:
4.50" x 4.50" square to 1.00" x 1.00" square in thicknesses from .005" thru .100"
96% Alumina standard sizes available:
4.50" x 4.50" square to 1.00" x 1.00" square in thicknesses from .005 thru .100"
Custom sizes are available upon request. Centerline provides diameters and other configuration per your specifications. For more information please fill out our Request a Quote form.
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