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Sapphire description
| Product Name: | Aluminum oxide (Al2O3) crystal substrate Sapphire crystal |
Product Description: | Al2O3 single crystal (Sapphire, also known as white stones,
sapphire) has good thermal properties, excellent electrical
characteristics and dielectric properties, and
anti-chemicalcorrosion, it is high temperature, thermal
conductivity, high hardness, infrared transparent, chemically
stable good. Widely used in high-temperature infrared window
materials and III-V nitride epitaxial film substrate and a variety
of materials to meet the growing blue, purple, white light-emitting
diode (LED) and blue laser (LD) needs, Branch Crystal company
specializing in the production of high quality polished sapphire
crystal and epitaxial substrates will provide you with a lot of
high quality and low price monocrystalline substrate. |
| Technical parameters: | | Crystal structure | Hexagonal a = 4.758 Å c = 12.992 Å | | Crystal orientation | (11-20) - a plane: 2.379 Å (1-102) - r plane: 1.740 Å (10-10) - m plane: 1.375 Å (0001) - c plane: 2.165 Å | | Crystal purity | > 99.99% | | Mp | 2040 o C | | Density | 3.98 g / cm 3 | | Hardness | 9 (mohs) | | Thermal expansion | 7.5 (x10 -6 / o C) | | Heat capacity | 0.10 (cal / o C) | | Thermal conductivity | 46.06 @ 0 o C 25.12 @ 100 o C, 12.56 @ 400 o C (W / (mK)) | | Permittivity | ~ 9.4 @ 300K at A axis ~ 11.58 @ 300K at C axis | | Loss tangent | <2x10 -5 at A axis, <5 x10 -5 at C axis |
|
| Specifications: | C, A, M, R Tolerance: + / -0.2 degrees dia1"~dia dia10" x 250mm Single throw or double throw, Ra <5A Note: according to customers' requirements and size of the
corresponding direction. |
| Standard Packaging: | 1000 clean room, 100 clean bag or single box packaging |
Sapphire wafer and substrate applications include:
- Microelectronic IC applications - SOS Silicon-on-Sapphire
- Growth of superconducting compounds / Gallium Nitride - Infrared
detectors
- Hybrid microelectronics - Polishing carriers
- Sapphire optical lens for windows, watch cover, bearing,
Hostile environment
Optical transmission from ultraviolet to near infrared
High temperature Radiation resistance
3.0 sample
4.We can supply professional customized service in time and provide
cooperation and support of new product development and technology
appliance.
5.0about sapphire produce step
crystal-> ingot--> cut tail-->repaire
diameter-->customized shape--->wire saw-->
anneal --> rough lapped--> champer-->fine groud
lapped-->polished
6.0 FAQ –
Q: What you can supply logistics and cost?
(1) We accept DHL, Fedex, TNT, UPS, EMS, SF and etc by fob.
(2) If you have your own express number, it's great.
Q: What's the delivery time?
(1) For the standard products such as ball lens, powell lens and
collimator lens:
For inventory: the delivery is 5 workdays after order.
For customized products: the delivery is 2 or 3 workweeks after
order.
Q: How to pay?
100％T/T before delivery, Paypal, West Union, MoneyGram.
Q: What's the MOQ?
(1) For inventory, the MOQ is 5pcs.
(2) For customized products, the MOQ is 10pcs-30pcs.
It depends on quantity and technics
