Sapphire Substrate
Sapphire substrates from SPI Supplies are single-crystal sapphire, prized for their excellent optical, physical, and chemical properties.
Manufacturer: SPI Supplies — USA
Overview
Sapphire substrates from SPI Supplies are single-crystal sapphire, prized for their excellent optical, physical, and chemical properties. Sapphire retains high mechanical strength and chemical resistance at elevated temperatures, has a wide optical transmission wavelength range, functions as an excellent electrical insulator, and offers good thermal conductivity at low temperatures. These properties make sapphire substrates suitable for epitaxial thin-film growth, optical windows, and applications requiring a chemically and thermally robust insulating support. SPI Supplies provides a technical note on single-crystal sapphire describing these properties in more detail.
Sizes and Finish
Sapphire substrates and wafers are available double-sided polished in square formats from 5 x 5 mm up to 25.4 x 25.4 mm, as well as round wafers of 25.4 mm diameter. All are supplied in packs of 5 pieces.
Specifications
| Specification | Sapphire Substrate |
|---|---|
| Material | Single-crystal sapphire (Al2O3) |
| Sizes | 5x5 mm, 10x5 mm, 10x10 mm, 25.4x25.4 mm square; 25.4 mm diameter wafer |
| Polish | Double-sided polished |
| Pack Size | 5 pieces per package |
| Key Properties | Wide optical transmission range, electrical insulator, high-temperature chemical resistance, good low-temperature thermal conductivity |
| Typical Applications | Epitaxial growth substrate, optical windows, high-temperature/chemically resistant support |