Hangzhou Freqcontrol Electronic Technology Ltd.
Hangzhou Freqcontrol Electronic Technology Ltd. We Grow Crystal. We Fabricate Wafer. We are Piezoelectric Specialist.
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Black Pyroelectric Free LiNbO3 Wafer 8 Inch 128Y-cut SAW IDT Application
Lithium Niobate (LiNbO3) is a ferroelectric material suitable for a variety of applications. Its versatility is made possible by the excellent electro-optic, nonlinear, and piezoelectric properties of the intrinsic material.
The reduction technique is used to produce black lithium niobate (LiNbO3), which has a high ability to neutralize charges even if the electric potential occurs instantaneously. The pyroelectric effect of LN wafer is almost eliminated and the transmittance is significantly reduced. The piezoelectric properties of black lithium niobate wafers are no different from those of standard wafers. Therefore, black reduced lithium niobate wafers are widely used to produce higher frequency surface acoustic wave devices.
BonTek is proud to announce that we can offer 3 ", 4 ", and 6 "black LN wafers for all cutting angles! Used for 128°Y and Z-cuts up to 8 inches in diameter.
| Material | 3" 4" 6" 8" LN wafer Saw/Optical grade |
| Orientation | X/Z/Y41°/Y64°/Y128°/YZ/YX or Customized |
| Curie Temp | 1142°C±3°C |
| Reduction | Standard Black - Super Black - 1.0E+10 ~ 9.0E+10 |
| Surface finish | single or double sides polish (DLP/SLP/ SSP/DSP all available) |
| Thickness | 0.18/0.25/0.35/0.50/1.00 + mm |
| TTV | < 1~5µm |
| BOW | ± (25µm ~40um ) |
| Warp | <= 35µm |
| LTV (5mmx5mm) | <1.5 um |
| PLTV(<0.5um) | ≥98% (5mm*5mm) with 2mm edge excluded |
| Edge | Compl't with SEMI M1.2@with GC800# .regular at C typed |
| Orientation flats | available, per request |
| Polished side Ra | Roughness Ra<=5A |
| Back Side Criteria | Roughness Ra:0.5-1.0µm GC#1000 |
| Edge Rounding | Compliant with SEMI M1.2 Standard/refer to IEC62276 |
| Cracks, saw marks, stains | None |
| Melting Point | 1253° C |
| Crystal System | Trigonal |
| Point Group | 3m |
| Crystal Density | 4.647 x 10³ kg / m³ |
| Curie Temperature (Tc) | 1150°C |
| Heat Capacity (Cp) | 89 J / k.mol |
| Dielectric Constants | T11=85.2 |
| T33=28.7 | |
| Elastic Constants | CE11=2.03 x 1011 N / m2 |
| CE12=0.573 | |
| CE13=0.752 | |
| CE14=0.085 | |
| CE33=2.424 | |
| CE44=0.595 | |
| Piezoelectric Strain Constants | e15=3.7 C / m2 |
| e22=2.5 | |
| e31=0.23 | |
| e33=1.33 |
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.
A: Sure. Factory inspection is important for large quantity purchase and long-term cooperation. Face to face discussion is what we mostly confident with. During the past years, big names around the world have witnessed our progress in factory build-up. These days, due to the Covid-19 pandemic, we also had the experience of videoconferencing with global buyers.
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