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Main performance parameters | |
Growth method | Hydrothermal |
Crystal structure | Six parties |
Lattice constant | a=4.914Å c=5.405 Å |
Melting point (℃) | 1610°C (phase transition point: 573.1°C) |
density | 2.684g/cm 3 |
hardness | 7 (mohs) |
Hot Melt | 0.18cal/gm |
Thermal conductivity | 0.0033cal/cm℃ |
Thermoelectric constant | 1200uv/℃ (300℃) |
Refractive index | 1.544 |
Thermal expansion coefficient | α11: 13.71×10 6 /℃ α33: 7.48×10 6 /℃ |
Q value | 1.8×10 6 min |
Sound speed, sound meter level | 3160 (m/sec) |
Frequency constant | 1661 (kHz/mm) |
Piezoelectric coupling | K2(%) BAW: 0.65 SAW: 0.14 |
Crystal orientation | Y, X, or Z-cut, rotation of an arbitrary value within 30º ~ 42.75 º ± 5 minutes scope primary orientation: according to customer requirements direction ± 30 min -time positioning side: according to customer requirements direction seed: in the center, the width <5mm , Height>66mm |
Polished surface | Epitaxial polishing: single polishing or double polishing Ra<10Å working area: substrate diameter -3mm curvature: Φ3″<20um, Φ4″<30um working area without chipping, on the edge, chipping width <0.5mm pits and scratches :Each piece<3, every 100 pieces<20 |
Standard thickness | 0.5mm±0.05mm TTV<5um |
Standard diameter | Φ2″(50.8mm), Φ3″(76.2mm), Φ4″(100mm)±0.2mm Primary positioning edge: 22±1.5mm (Φ3″) 32±3.0 (Φ4″) Secondary positioning edge: 10mm±1.5mm |
Q: Are you trading company or manufacturer ?
We are factory.
Q: How long is your delivery time?
Generally it is 3-5 days if the goods are in stock.
or it is 7-10 days if the goods are not in stock, it is according to quantity.
Q: Do you provide samples ? is it free or extra ?
Yes, we could offer the sample for free charge but do not pay the cost of freight.
Q: What is your terms of payment ?
Payment <=5000USD, 100% in advance.
Paymen >=5000USD, 80% T/T in advance , balance before shippment.
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