Single-Crystal Products: LT (Lithium Tantalate) / LN (Lithium Niobate)
Overview
SMM has been working on the development of technology for the steady growth of single crystal as well as improving processing accuracy. SMM has also achieved the top-level flatness in the industry.
Quality characteristics
| Oxide Crystals | LiNbO3 | LiTaO3 | ||
|---|---|---|---|---|
| Growth method | CZ (Czochralski) | CZ (Czochralski) | ||
| Crystal | Single Crystal | Single Crystal | ||
| Use for | SAW | SAW | ||
| Wafer size | 4" | 6" | 4" | 6" |
| Diameter (mm) | 100.0 ± 0.2 | 150.0 ± 0.2 | 100.0 ± 0.2 | 150.0 ± 0.2 |
| Thickness (μm) | 350 ± 20 | 500 ± 20 | 200/350 ± 20 | 200/350 ± 20 |
| Orientation | 128º Rotated Y axis | 128º Rotated Y axis | 36-50º Rotated Y axis | 36-50º Rotated Y axis |
| Orientation Flat (mm) | 32.5 ± 1.0 | 47.5 ± 1.0 | 32.5 ± 1.0 | 47.5 ± 1.0 |
| NTV (μm) | ≦4 | ≦4 | ≦4 | ≦4 |
| PLNTV (≦0.5μm, site size 5mm) (%) | 100 | 100 | 100 | 100 |
| Sori (μm) | ≦50 | ≦50 | ≦50 | ≦75/≦50 |
| Surface:Front side | Polished | Polished | Polished | Polished |
| Surface:Back side | Lapped (GC #2000) | Lapped (GC #2000) | Lapped (GC#1000) | Lapped (GC#2000/GC#1000) |
Applications
The largest use of Lithium Tantalate (LT) and Lithium Niobate (LN) is in SAW devices mounted in communication devices. Many communication devices, such as smartphones are being used every day. When voice communication and data communication are performed, SAW devices such as SAW filters and SAW duplexers are mounted in communication devices as filters for preventing noise and interference.
Contact
Sales & Marketing Group, Crystal Materials Business Unit, Advanced Materials Div.
Phone: 81-3-3436-7870
Facsimile: 81-3-3436-7827
E-mail: Crystal_DN@smm-g.com
