SAW Quartz (SiO2) Crystals and Wafers
High Thermal Stability: Maintains stable piezoelectric properties at room temperature.
High Mechanical Strength: Durable and resistant to mechanical stress.
High Quality Factor: Ensures precise and efficient signal processing.
High Rigidity and Good Dynamic Characteristics: Provides robustness and reliability in dynamic applications.
No Pyroelectric and Ferroelectric Effect: Offers stable performance without thermal-induced changes.
Excellent Insulation Properties: Ensures minimal electrical interference and high performance.
Applications: Resonators, High-Frequency Oscillators, Filters, Navigation and Remote Control, Telemetry, Electronics and Electric Equipment, etc.
Quartz crystal, with the chemical composition SiO2, is predominantly used for Surface Acoustic Wave (SAW) devices. Its notable characteristics include a melting point of 1750°C, a density of 2.65×10³ kg/m³, and a Mohs hardness of 7. SAW-grade quartz crystal wafers are highly favored for their remarkable piezoelectric properties and exceptional thermal stability, where the piezoelectric and dielectric coefficients remain almost unchanged at room temperature.
Specifications:
| Materials | both Pure Z and Y bar available |
| Synthetic Q Value | min 1.8 , 2.4 to 3.0 mil IEC |
| Etch Channel Density | max 15/cm2 max100/cm2; max300/cm2 |
| Stress | No dark or discolored visible in polarized light |
| Surface Finishing | #1000, #2000, #3000 , #4000, and Polished std |
| Angle Tolerance | ZZ’: +/-15″ +/-30″, +/-1′ +/-2′ |
| XX’ | +/-15 , +/-30′ |
| Cut Type | AT. BT. IT ,SC,….,etc. |
| Frequency | 1Mhz up to 50 Mhz for AT-fundamental |
| Size for Round Blank | from 3.0 to 15.0 mm dia (with flat) |
| Size for Wafer | 2.0×8.0 (mm)~ 16×16(mm) |
| SMD Type | 2.5×3.0 above at Customer option |
| Flat | as requested the flat shall be perpendicular to X axis within +/- 10 deg |
Advantages:
- High Thermal Stability: Maintains stable piezoelectric properties at room temperature.
- High Mechanical Strength: Durable and resistant to mechanical stress.
- High Quality Factor: Ensures precise and efficient signal processing.
- High Rigidity and Good Dynamic Characteristics: Provides robustness and reliability in dynamic applications.
- No Pyroelectric and Ferroelectric Effect: Offers stable performance without thermal-induced changes.
- Excellent Insulation Properties: Ensures minimal electrical interference and high performance.
Applications:
- Resonators: Used for stabilizing frequencies in electronic circuits.
- High-Frequency Oscillators: Essential in generating precise frequency signals.
- Filters: Employed in signal processing to filter specific frequencies.
- Navigation and Remote Control: Crucial for accurate positioning and control systems.
- Telemetry: Used for data transmission over distances.
- Electronics and Electric Equipment: Incorporated in automatic weapons, supersonic aircraft, missiles, nuclear weapons, electron microscopes, chronographs, etc.
Kingwin Optics provides custom SAW-grade quartz crystals and wafers. Utilizing advanced facilities and cutting-edge techniques, they ensure high-quality crystal growth, wafer cutting, lapping, polishing, and thorough checking.
