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Piezoelectric Wafers LGS Crystal For High Temperature SAW Sensors
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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| Material: | Langasite Wafers | Electromechanical Coupling Factor: | 15.8 |
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| Frequency Spacing Δf, %: | 0.90 | Cut, A1: | 138.5° ± 0.1° |
| Cut, A2: | 26.7° ± 0.1° | Diameter: | 100mm ±0.25mm |
| Thickness: | 0.5mm ±0.03mm | SAW Velocity Vef: | (0º,140 º,25 º) 2756 M/s |
| High Light: | SAW Sensors LGS Crystal,0.5mm Piezoelectric Wafers,100mm LGS Crystal |
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Product Description
Piezoelectric Langasite Wafers LGSO Crystal For High Temperature SAW Sensors
LGS Crystal is a multifunctional crystal. The interaction between the electro-optical effect and optical rotation in the functional crystal has been considered and studied, and it can be used as an electro-optical crystal.
Its piezoelectric moduli are about three times larger than for quartz. So a moderately high electro-mechanical coupling coefficient, increasing bandwidth, decreasing insertion loss are expected.
Second, its SAW phase velocity is lower than for quartz. Since the finger width of interdigital transducers (IDTs) for SAW generation determines the acoustic wavelength, SAW devices on CGG-type substrates potentially may have sizes.
Third, in contrast to quartz, where the temperature range of application is limited due to a structural phase transition, the crystals show structural stability up to the melting point. This offers the opportunity of SAW application at elevated temperatures, especially in sensor devices.
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Langasite Wafer, YXIs /0/140/25 |
Tolerance |
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Cut, A1 |
138.5° / 140° |
± 0.1° |
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Cut, A2 |
26.7° / 25° |
± 0.1° |
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Diameter D mm |
100mm |
±0.25mm |
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Thickness T.mm |
0.50mm |
±0.03mm |
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Reference Flat F1,mm |
32.0mm |
±2.50mm |
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Secondary Flat F2, mm |
11.0mm |
±2.00mm |
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Front Side |
Polished Ra < 1.0 nm |
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Back Side |
Lapped, 0.4 um < Ra < 0.6um |
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Flatness |
< 10μm |
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Scratches, cracks, contamination, others (dimples, pits. orange peel) |
No such defects by visual inspection |
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Edge chips |
Radial depth < 0.5mm: |
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Properties Crystals |
Quartz SiO2 | Langasite La3Ga5SiO14 | Lithium tetraborate Li2B4O7 | Lithium Tantalite LiTaO3 |
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Electromechanical Coupling Factor K%(BAW) |
7.0 | 15.8 | 24.0 | 47.0 |
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Frequency Spacing Δf, % |
0.25 | 0.90 | 4.00 | 7.00 |
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Q-Factor Q, x103 |
100 | 50 | 10 | 2 |
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Temperature Frequency Coefficient TFC, x10-6/°C |
0.5 | 1.6 | 6.0 | 4.0 |
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.