6 inch Sapphire Wafer C-Plane Single or Double Side Polish Al₂O₃ Single Crystal

Features for 6 in Sapphire Wafer C-Plane Single or Double Side Polish, Prime Grade

Customized sapphire wafers and windows are available upon request

• Product SKU#: WA0411 for single side polished, WA0410 for double side polished
• Material: High purity single crystal Al₂O₃, sapphire wafer.
• Dimension: 150 mm +/- 0.05 mm, 6 inch
• Thickness: 1300 +/- 25 um
• Orientation: C plane (0001) off M (1-100) plane 0.2 +/- 0.05 degree
• Primary flat orientation: A plane +/- 1 degree
• Primary flat length: 47.5 mm +/- 1 mm
• Total Thickness Variation (TTV): <20 um
• Bow: <25 um
• Warp: <25 um
• Thermal Expansion Coefficient: 6.66 x 10^-6 / °C parallel to C axis, 5 x 10^-6 /°C perpendicular to C axis
• Dielectric Strength: 4.8 x 10⁵ V/cm
  
• Dielectric Constant: 11.5 (1 MHz) along C axis, 9.3 (1 MHz) perpendicular to C axis
• Dielectric Loss Tangent (a.k.a. dissipation factor): less than 1 x 10^-4
• Thermal Conductivity: 40 W/(m.K) at 20℃ 
• Polishing: single side polished (SSP) or double side polished (DSP) Ra < 0.5 nm (by AFM). The reverse side of SSP wafer was fine ground to Ra = 0.8 - 1.2 um.
  
• Transmittance: 88% +/-1 % @460 nm