A-Plane Sapphire Wafer

A-Plane Sapphire Wafer: Material Overview

A-Plane Sapphire Wafer is considered for optical protection, semiconductor processing, crystal research, sensing, photonics and precision mechanical assemblies. Sapphire combines high hardness, chemical stability and broad optical usefulness with controlled single-crystal orientation. Final performance depends on geometry, surface state and mounting conditions. Sapphire wafer procurement should identify the required crystal plane, polish side, thickness and edge geometry.

A-plane sapphire has different in-plane orientation behavior than C-plane, making orientation verification important for epitaxial experiments.

Engineering and Specification Considerations

Lithography or bonding processes may need tighter bow, warp, TTV and surface criteria.

• C/A/R/M orientation
• diameter or drawing
• thickness
• SSP/DSP
• optical surface quality
• chamfers
• coating and inspection method

Quality and Inspection Priorities

Engineering acceptance should be defined before order confirmation. Depending on grade and use, the inspection review may include:

• Crystal orientation
• inclusions
• surface scratches/digs
• roughness
• flatness
• thickness variation
• edge finish and optical transmission where relevant

Where possible, request the inspection method, measurement location and batch documentation alongside the numeric limit.

Applications and Selection Guidance

Potential application fields include optical protection, semiconductor processing, crystal research, sensing, photonics and precision mechanical assemblies. The final selection depends on thermal, electrical, optical and mechanical operating conditions. Share the process step and acceptance criteria to help the supplier evaluate feasibility.

Frequently Asked Question

Does sapphire orientation matter for a custom component?

Yes. The requested crystal plane and cut direction can affect processing, optical response, mechanical behavior and downstream fabrication. Confirm orientation with the end-use drawing.

What should be included in a request for quotation?

Send the part name or drawing, material grade, diameter/size, thickness, orientation, surface finish, quantity and required tests. If you have a target delivery date or acceptance specification, include it at the outset.