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

  • $ 2990

Qty (pieces) Price (per piece)
1 - 10 $ 29.90
11 - 24 $ 26.90
25 - 25+ $ 23.90

Sapphire Wafer, 2 inch, C-plane (0001), Prime Grade

Customized sapphire wafers and windows are available upon request

  • Material: High Purity >99.99%, single crystal Al2O3
  • Dimension: 50.8 mm +/- 0.1 mm
  • Thickness: 430 um +/- 25 um for SSP and 400 um +/- 25 um for DSP (other thickness available upon request)
  • Lattice Parameter: a=4.785 A, c=12.991 A
  • Density: 3.98 g/cm3
  • Orientation: C plane (0001) to M (1-100) 0.2 +/- 0.1 degree off.
  • Primary Flat Orientation: A-plane [11-20] +/- 0.2 deg
  • Primary Flat Length: 16.0 +/- 1.0 mm
  • Total Thickness Variation (TTV): <5 um
  • Bow: <10 um
  • Warp: <10 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) front side epi-ready surface Ra < 0.3 nm (AFM), back side fine-ground Ra = 0.8 ~ 1.2 um, or double side polished (DSP) both front and back sides epi-ready surface Ra < 0.3 nm (AFM)
  • Package: packaged in a class 100 clean room environment, in cassettes of 25 pcs or single wafer containers, under nitrogen atmosphere.