Reduced Black LiNbO3 and LiTaO3 Piezoelectric Wafer Free-pyro for Higher Frequency SAW devices
The pyroelectric effect for the black LiNbO3 and LiTaO3 wafers was almost eliminated and the transmittance decreased considerably. The reduction process did not change Curie temperatures or piezoelectric properties of LN and LT wafers, while neutralize electrical charges even if the electrical potential occurs instantaneously.
The piezoelectric wafer bake module is used to minimize electrostatic discharge from Lithium Niobate, Lithium Tantalate and other piezoelectric wafers during bake temperatures up to 200°C. The hot plate ramp rate up and ramp rate down temperatures are precisely controlled by program to minimize ESD introduction and discharging during bake. In addition, the wafer distance above the hot plate during bake has ascend and descend control.
Material | 3" 4" 6" 8" LN wafer SAW / Optical | 3" 4" 6" LT wafer SAW / Optical |
Orientation | X/Z/Y41°/Y64°/Y128°/YZ/YX or Customized | X112°/Y28°/Y36°/Y42°/YZ or Customized |
Surface finish | Single Side Polish or Double Sides Polish (DLP/SLP/ SSP/DSP all available ) | |
Thickness | 0.18/0.25/0.35/0.50/1.00 mm | 0.25/0.35/0.50/1.00 mm |
TTV | < 1~5µm | |
BOW | ± (25µm ~40um ) | |
Warp | <= 35µm | |
LTV | <1.5 um | |
PLTV(<1.5um) | ≥98% (5mm*5mm) with 2mm edge excluded | |
Curie Temperature | 1142°C±3°C | 605°C±3°C |
Flat | 22mm, 32.5mm, 47.5mm, 57.5mm, NOTCH | |
Doped with | Er, MgO Single or Double doped | Fe doped |
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 | |
Single Domain | Completed Polarization / Reduced |
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.
Acceptance Check