| Basic materials characteristics | |||
| Density, g/cm3 | 2.65 | ||
| Melting point, °C | 1467 | ||
| Thermal conductivity, W/(m x K) (T = 25°C) | 10.7 (parallel to axis Z) | 6.2 (perpendicular to axis Z) | |
| Hardness (Mohs) | 7 | ||
| Dielectric ñ onstant at 30 MHz | 4.34 (parallel to axis Z) | 4.27 (perpendicular to axis Z) | |
| Young's modulus (E), GPa | 97.2 (parallel to axis Z) | 76.5 (perpendicular to axis Z) | |
| Chemical stability | insoluble in water | ||
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Specifications |
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| Item | 4" | 6" | 8" |
| Cutting Type | AT36°/ST42.75°/X/Y/Z-cut | Z-cut | |
| Diameter(round or square) (mm) | 100 | 150 | 200 |
| Tol(±mm) | 0.3 | 0.3 | 0.3 |
| Thickness (mm) | ≥0.15 | ≥0.25 | ≥0.3 |
| Primary flat (mm) | 32±2 | 57.5/42±2 | notch |
| LTV (5mmx5mm) (µm) | < 1 | < 1 | < 1 |
| TTV (µm) | < 1.5 | < 3 | < 5 |
| Bow (µm) | ±20 | ±30 | ±40 |
| Warp (µm) | ≤ 25 | ≤ 30 | ≤ 50 |
| PLTV (<0.5µm within 5*5mm) % | ≥95% | ≥95% | ≥95% |
| Edge bevel | According with IEC62276& SEMI M1.2 Standard | ||
| Polished side Ra (nm) | ≤1.5 | ||
| Back Side Criteria (µm) | general Ra:0.2-0.5 or polished | ||
| Customization acceptable | |||
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The possible applications |
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| 1. SAW(Surface Acoustic Wave) devices, frequency filters and resonators for wireless communications. | |||
| 2. IF communication devices because of its stable frequency characteristics in a variable temperature environment. | |||
| 3. Optical quartz plates are used in multi-refraction applications in digital cameras and videos | |||
| 4. As a "pick-up" for DVD and optical discs. Future applications for optical plates are in sensors for: | |||
| i. ITS (Intelligent Transport System) | |||
| ii. VICS (Vehicle Information and CommunicationsS ystems) | |||
| iii. AHS (Automated Highway systems) | |||
| iv. Control devices for optical fiber cable communication. | |||
