Our 4-inch sapphire wafer is a high-quality single crystal aluminum oxide substrate designed for semiconductor, optical, LED, sensor, and research applications. With excellent hardness, chemical stability, high-temperature resistance, optical transparency, and good electrical insulation, sapphire wafers are widely used in demanding industrial and scientific fields.

We provide 4-inch sapphire wafers with customizable orientation, thickness, surface finish, and grade to meet different project requirements, including R-plane, C-plane, A-plane, and M-plane sapphire wafers.

Product Overview

Sapphire, also known as single crystal Al₂O₃, is one of the most reliable substrate materials for applications requiring high mechanical strength, excellent surface quality, and stable performance under harsh environments.

Our 4-inch sapphire wafers are carefully processed through cutting, grinding, lapping, polishing, and inspection to ensure stable quality and good surface performance. They can be supplied as single-side polished, double-side polished, or epi-ready wafers according to customer requirements.

Key Features

• 4-inch single crystal sapphire wafer
• Excellent hardness and wear resistance
• High chemical and thermal stability
• Good electrical insulation
• Wide optical transmission range
• High surface flatness and smoothness
• Available in different orientations
• SSP, DSP, and epi-ready options available
• Custom thickness, tolerance, and surface roughness available
• Suitable for semiconductor, optical, LED, and research applications

Typical Applications

4-inch sapphire wafers are widely used in:

• LED substrates
• Semiconductor substrates
• Optical windows
• Sensor substrates
• MEMS devices
• RF and microwave devices
• High-temperature electronic devices
• Laser and optical components
• Research and laboratory testing
• Thin film deposition and epitaxial growth

Customizable Specifications

We can provide 4-inch sapphire wafers according to your specific requirements.

Common options include:

• Diameter: 4 inch
• Material: Single crystal sapphire / Al₂O₃
• Orientation: C-plane, A-plane,or customized
• Thickness: Customized
• Surface finish: SSP / DSP / epi-ready
• Grade: Dummy grade, optical grade, or prime grade
• Surface roughness: Available upon request
• TTV, bow, warp, and edge processing: Available upon request
• Packing: Cleanroom packing or customized packing

If you have drawings, datasheets, or special technical requirements, our team can evaluate them and provide a suitable sapphire wafer solution for your project.

Why Choose Our 4-Inch Sapphire Wafers?

We focus on supplying reliable sapphire wafers and customized sapphire components for global customers. Whether you need wafers for research, testing, optical applications, or semiconductor production evaluation, we can provide professional support, flexible customization, and stable product quality.

Our team can help you confirm suitable specifications, including orientation, thickness, polishing type, and surface quality, based on your actual application.

Request a Quotation

If you are looking for 4-inch sapphire wafers, please contact us with your required specifications, including orientation, thickness, polishing type, grade, quantity, and application.

We will provide a suitable quotation, lead time, and technical support based on your project requirements.