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A 4 inch sapphire wafer refers to a sapphire disc with a diameter of 4 inches (approximately 101.6 millimeters). These discs are typically made from single-crystal sapphire material and are used for various applications in industrial and scientific fields. Sapphire wafers possess excellent optical, mechanical, and chemical properties, making them widely applicable across many domains.
4 inch sapphire wafers have many special properties that make them useful in a variety of applications. Here are some of its key features:
The 4 inch sapphire wafer has excellent optical, mechanical and chemical properties, so it has a wide range of applications in many fields.
1. Optical Windows and Lenses: Due to its excellent transparency and hardness, sapphire wafers are commonly used to manufacture high-performance optical windows and lenses, particularly in laser systems and optical sensors.
2. Substrates for Optical Coatings: Sapphire wafers serve as substrates for optical coatings, facilitating the production of high-quality optical coatings such as mirrors and filters.
3. Electronic Devices: Thanks to sapphire’s electrical insulation properties, sapphire wafers are often employed as insulation layers or bases in electronic devices, such as high-power electronic devices and microelectronics.
4. Chemical Sensors: Sapphire’s resistance to chemical substances makes sapphire wafers suitable for manufacturing chemical sensors and reactors.
5. High-Temperature Applications: With its excellent thermal conductivity and chemical inertness, sapphire wafers are frequently utilized in devices for high-temperature environments, such as heat sinks for optical devices and radiators for lasers.
Item | 4-inch C-plane(0001) 650μm Sapphire Wafers | |
Crystal Materials | 99,999%, High Purity, Monocrystalline Al2O3 | |
Grade | Prime, Epi-Ready | |
Surface Orientation | C-plane(0001) | |
C-plane off-angle toward M-axis 0.2 +/- 0.1° | ||
Diameter | 100.0 mm +/- 0.1 mm | |
Thickness | 650 μm +/- 25 μm | |
Primary Flat Orientation | A-plane(11-20) +/- 0.2° | |
Primary Flat Length | 30.0 mm +/- 1.0 mm | |
Single Side Polished | Front Surface | Epi-polished, Ra < 0.2 nm (by AFM) |
(SSP) | Back Surface | Fine ground, Ra = 0.8 μm to 1.2 μm |
Double Side Polished | Front Surface | Epi-polished, Ra < 0.2 nm (by AFM) |
(DSP) | Back Surface | Epi-polished, Ra < 0.2 nm (by AFM) |
TTV | < 20 μm | |
BOW | < 20 μm | |
WARP | < 20 μm | |
Cleaning / Packaging | Class 100 cleanroom cleaning and vacuum packaging, | |
25 pieces in one cassette packaging or single piece packaging. |
I am very happy to introduce to you our 4-inch sapphire wafer. Shanghai Xinkehui Materials Co., Ltd. is a manufacturer specializing in the production and sales of sapphire wafers, sapphire substrates, color sapphire and other optical products, especially in sapphire wafers. We have always been the industry leader in terms of production.
1. Diverse application fields.
Whether you are working in optics, electronics or chemistry, our 4-inch sapphire wafers provide you with the ideal solution. It is widely used in various applications such as lasers, optical sensors, chemical sensors, high-power electronic devices, etc.
2. Excellent performance.
Sapphire wafers have excellent optical transparency, high hardness, excellent chemical inertness and thermal conductivity. This allows it to perform well in harsh environments and provide long-term stability and reliability.
3. Customized services.
We provide customized solutions to meet your specific needs and application scenarios. Whether you require specific sizes, thicknesses or special finishes, we have the right product for you.
4. High quality assurance.
Our sapphire wafers undergo strict quality control and inspection to ensure that each product meets the highest standards. You can confidently choose our products to meet your needs.
5. Technical support and after-sales service.
We have an experienced technical team that can provide you with professional technical support and after-sales service. No matter what problems you encounter during use, we will do our best to help you.