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60mm Langasite Wafer Thickness 0.5mm DSP Euler Angles 0° 138.5° 26.7°
Product Details:
| Place of Origin: | China |
| Brand Name: | BonTek |
| Certification: | ISO:9001, ISO:14001 |
| Model Number: | Langasite Wafers |
Payment & Shipping Terms:
| Minimum Order Quantity: | 5 pcs |
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| Price: | Negotiable |
| Packaging Details: | Cassette/ Jar package, vaccum sealed |
| Delivery Time: | 1-4 weeks |
| Payment Terms: | T/T |
| Supply Ability: | 5000 pcs/Month |
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Detail Information |
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| Product: | Langasite Wafers | Point Group: | 32 |
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| 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 |
| Highlight: | 60mm Langasite Wafer,0.25mm LGS Wafer,0.5 mm Langasite Wafer |
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Product Description
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
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Point group |
32 |
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Space group |
P32I |
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Resistivity |
4.0×1012Ω/cm-1 |
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Thickness |
0.13-0.5mm |
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Diameter |
50mm |
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Length |
90-100mm |
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Melting point |
1470℃ |
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Density |
5.67g/cm3 |
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Mohs hardness |
5.5 |
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Coefficient of thermal expansion |
aa=16×10-6/K, ac=4×10-6/K |
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Optical damage threshold |
670MV/cm2 |
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Crystal cell parameters |
a=b=0.8162nm,c=0.5087nm |
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Dielectric constant |
ε11=18.27 |
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ε33=55.26 |
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Electro-optic coefficient |
γ11=2.3×10-12m/V |
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γ33=1.8×10-12m/V |
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Piezoelectric strain constant(10-12)C / N |
d11=6.3 |
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d14=-5.4 |
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Phase velocity m / s |
2750～2850 |
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Electromechanical coupling coefficient K [％] |
0.28～0.46 |
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Coefficient of thermal expansion |
α11=5.15×10-6K-1 |
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α33=3.65×10-6K-1 |
FAQs:
- Q: What are the products you mainly work on?
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.
- Q: Can you accept product customization?
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.
- Q: Can you deliver the goods via our courier agent?
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.
- Q: How can you guarantee we get what we want safely?
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
- The product is fragile. We have adequately packed it and labeled it fragile. We deliver through excellent domestic and international express companies to ensure transportation quality.
- After receiving the goods, please handle with care and check whether the outer carton is in good condition. Carefully open the outer carton and check whether the packing boxes are in alignment. Take a picture before you take them out.
- Please open the vacuum package in a clean room when the products are to be applied.
- If the products are found damaged during courier, please take a picture or record a video immediately. DO NOT take the damaged products out of the packaging box! Contact us immediately and we will solve the problem well.