Surface Acoustic Wave propagation on the Piezoelectric Wafer with Designed Cut Angles and Thickness
There are some crystals that get lumped together as piezoelectric materials. The structure in these crystals aren’t symmetrical but they still exist in an electrically neutral balance. However, if you apply mechanical pressure to a piezoelectric crystal, the structure deforms, atoms get pushed around, and suddenly you have a crystal that can conduct an electrical current. If you take the same piezoelectric crystal and apply an electric current to it, the crystal will expand and contract, converting electrical energy into mechanical energy.
BonTek grows crystal and fabricate wafers, we are piezoelectric specialist. We work mostly with wafers, blanks, substrates made from Quartz Crystal, Lithium Niobate, Lithium Tantalate etc.
Material | Lithium Niobate | Lithium Tantalate | Quartz Crystal |
Diameter / Size | 3’’, 4’’, 6’’, 8’’ | 3’’, 4’’, 6’’ | 3’’, 4’’, 5’’, 6’’, 8’’ |
Cut Type | X / Y / Z 36Y / 64Y/128Y | X / Y-Z / X-112Y 28Y / 36Y / 42Y | X / Y / Z AT / ST / DT |
Surface Finish | Double side polish / Single side polish | ||
Thickness | 0.25mm / 0.35mm / 0.50mm / 1.00mm / 2.00mm | ||
TTV | < 5um | ||
PLTV | >98% (5mm*5mm) | ||
LTV | < 1.5um | ||
Bow | -25um < Bow < +25um | ||
Warp | < 30um | ||
Roughness | Ra<0.5nm, Ra<1nm | ||
Curie Temp. | 1142℃ ± 2℃ | 605℃ ± 2℃ | 573℃ |
Edge Profile | Round Ground, "C" Shape | ||
Flats | 22±2mm, 32.5±2mm, 47.5±2mm, 57.5±2mm, Notch As per request | ||
Dope with | Er, MgO | Fe | with or without seed |
Front Side | Roughness Ra<= 10A | ||
Back Side | Roughness Ra: 0.2--0.7um GC#1000, GC#2000 | ||
Appearance | No Cracks, saw marks, stains | ||
Single Domian | Completed Polarization / Reduced | No Stress |
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