We offer high purity SAW and optical grade single crystal quartz wafers grown by hyrothermal method. Wafers are available in various orientations namely: X-Cut, Y-Cut, Z-Cut, AT-Cut and ST-Cut. Quartz wafer have excellent thermal conductivity, high working temperature, high optical transmittance and unique piezoelectric properties. Due to these properties, Quartz wafers find numerous applications in semiconductor industry, optical lens manufacturing, in microwave filters, optical fiber etc. Wafers are available in 2 Inch, 3 Inch, 4 Inch and 6 Inch diameter with single side or double side polishing (optically transprent). Specifications can be customized as per your requirement.
Single Crystal Quartz Wafer properties:
| Formula | SiO2 |
|---|---|
| Growth method | Hydrothermal |
| Crystal structure | Hexagonal |
| Lattice constant | a=4.9 Å , C=5.4 Å |
| Q value | 1.8 x 10 6 min. |
| Inclusion | IEC Grade II |
| Grade | SAW grade , Optical grade |
| Density | 2.67 g / cm3 |
| Poisson's ratio | NA |
| Young's modulus | 97.2 Gpa / 76.5 Gpa |
| Moh's hardness | 7 |
| Melting point | 1620 °C |
| Specific heat | 0.18 cal / gm |
| Thermal conductivity | 0.0033 cal / cm / °C |
| Thermal expansion coefficient | 13.71 ×10 - 6 K-1 |
| Electrical Properties | |
| Resistivity ( ohm-cm ) | 8@250 °C / 6.5@350 °C |
| Loss Tangent | 37 x 10-4 |
| Dielectric constant | 4.6 |
| Refractive index ( @ 589 nm ) | Nd =1.544 |
Wafer Specifications:
| Specification | Value |
|---|---|
| Diameter | 2/ 3 / 4/ 6 Inches |
| Thickness | 0.4 mm / 0.5 mm / 0.7 mm / 1.1 mm |
| Angle cut | X cut / Y cut / Z cut /AT-cut 35.25° / ST cut 42.75° |
| Surface | Single side polished / Double sides (Optically Transparent) polished |
| Flat | SEMI.Std. flat or Notch |
| TTV | <= 15 um |
| Roughness | Ra <=10 Å |
| Surface quality | 60 / 40 |