Hangzhou Freqcontrol Electronic Technology Ltd.
| Payment Terms | T/T |
| Supply Ability | 5000 pcs/Month |
| Delivery Time | 1-4 weeks |
| Packaging Details | Cassette/ Jar package, vaccum sealed |
| Product | Langasite Wafers |
| Point group | 32 |
| Space group | P32I |
| Resistivity | 4.0×1012Ω/cm-1 |
| Euler Angle 1 | 0°,138.5°,26.7° |
| Euler Angle 2 | 0°,22°,90° |
| SAW Velocity Vef (m/s) | (0º,140 º,25 º) 2756 |
| Density | 5.746 g/cm3 |
| Brand Name | BonTek |
| Model Number | Langasite Wafers |
| Certification | ISO:9001, ISO:14001 |
| Place of Origin | China |
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Product Specification
| Payment Terms | T/T | Supply Ability | 5000 pcs/Month |
| Delivery Time | 1-4 weeks | Packaging Details | Cassette/ Jar package, vaccum sealed |
| Product | Langasite Wafers | Point group | 32 |
| Space group | P32I | Resistivity | 4.0×1012Ω/cm-1 |
| Euler Angle 1 | 0°,138.5°,26.7° | Euler Angle 2 | 0°,22°,90° |
| SAW Velocity Vef (m/s) | (0º,140 º,25 º) 2756 | Density | 5.746 g/cm3 |
| Brand Name | BonTek | Model Number | Langasite Wafers |
| Certification | ISO:9001, ISO:14001 | Place of Origin | China |
| High Light | 60mm Langasite Wafer ，0.25mm LGS Wafer ，0.5 mm Langasite Wafer | ||
Diameter 60mm Langasite Wafers Thickness 0.5mm DSP Euler Angles 0°,138.5°,26.7°
Langasite La3Ga5SiO14 crystals (LGSO or LGS), also known as Lanthanum gallium silicate, has its crystal structure belonging to the space group P321, point group 32. LGS is a promising piezoelectric material with no phase transitions up to its melting point of 1470 °C. LGSO has the value of electromechanical coupling coefficient, which is between that of a quartz crystal and that of lithium tantalate crystal. LGSO is mainly applied in fabrication of SAW (surface acoustic wave), BAW (bulk acoustic wave) devices and sensors (pressure sensor, acceleration sensor. etc.).
Diameter: 10 - 60 mm, or can be customized
Thickness: 0.25-0.5 mm, or can be customized
Total Thickness Variation (TTV) for a 2" Wafer: < 10um
First Reference Flat: 15.0 mm
Second Reference Flat: 8.0 mm
Surface Roughness (Polished): Ra ≤ 1 nm
Surface Polish Choices: SSP or DSP.
Orientations: Euler angles (0°,138.5°,26.7°) or (0°,22°,90°), or Z-cut, or following customer specifications. Definition of Euler angles (0,138.5,26.6): 42.5 degree rotated Y-cut with reference flat perpendicular to 26.6 degree rotated X axis
| Point group | 32 |
| Space group | P32I |
| Resistivity | 4.0×1012Ω/cm-1 |
| Thickness | 0.13-0.5mm |
| Diameter | 50mm |
| Length | 90-100mm |
| Melting point | 1470℃ |
| Density | 5.67g/cm3 |
| Mohs hardness | 5.5 |
| Coefficient of thermal expansion | aa=16×10-6/K, ac=4×10-6/K |
| Optical damage threshold | 670MV/cm2 |
| Crystal cell parameters | a=b=0.8162nm,c=0.5087nm |
| Dielectric constant | ε11=18.27 |
| ε33=55.26 | |
| Electro-optic coefficient | γ11=2.3×10-12m/V |
| γ33=1.8×10-12m/V | |
| Piezoelectric strain constant(10-12)C / N | d11=6.3 |
| d14=-5.4 | |
| Phase velocity m / s | 2750～2850 |
| Electromechanical coupling coefficient K [％] | 0.28～0.46 |
| Coefficient of thermal expansion | α11=5.15×10-6K-1 |
| α33=3.65×10-6K-1 |
FAQs:
A: We look at ourselves as the piezo wafer specialist. We are the very first to work with Single Crystal Quartz in China about 30 years ago. Then gradually we step in the field of LiNbO3, LiTaO3, Quartz glass, LGS, CTGS etc. Especially, if you are looking for a piezo quartz supplier, we are the ultimate choice! We export millions of quartz blanks each year because we master the AT, SC and IT cuts with superior angle precision.
A: Yes, of course. We can fabricate as per your request. In addition, we are so experienced with piezo wafers that we can provide you relevant suggestions if you are not 100% sure about your choice. Besides, we do have some standard wafers in stock, please check with us.
A: Yes, we would suggest you go with the courier agent you are most familiar with (DHL, FedEX, UPS etc.). We can ship via your account. And, of course, we will pack the products safely in acceptable size to help you save the shipping cost. If you need us to take care of the freight, it’s also not a problem. We also have good discount with the international courier companies.
A: The wafer products are fragile and sometimes expensive. The last thing, as the manufacturer, we want to see is the products we make were damaged during courier. As a result, we will pack the wafers adequately and put them in a proper carton filled with buffer sponge. However, accidents are inevitable sometimes. So, please follow the “Acceptance check” steps shown in the drawings below. If the unwanted happened, we will either give the replenishment or refund if you follow the checking steps.
Acceptance Check
Company Details
Business Type:
Manufacturer,Trading Company
Year Established:
1999
Total Annual:
800M-1500M
Employee Number:
10~99
Ecer Certification：
Verified Supplier
Founded in 1999, Hangzhou Freqcontrol Electronic Technology Ltd. is a China leading manufacturer of piezoelectric crystal wafers, substrates, components and single crystal growth. We, known as the "CQT Group" in global market, headquartered in Hangzhou, China, empowered by its manufacturin... Founded in 1999, Hangzhou Freqcontrol Electronic Technology Ltd. is a China leading manufacturer of piezoelectric crystal wafers, substrates, components and single crystal growth. We, known as the "CQT Group" in global market, headquartered in Hangzhou, China, empowered by its manufacturin...
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