High Conductivity Black LT Wafer For Surface Acoustic Wave Devices
High Conductivity SAW Grade Black-LT Wafer For Surface Acoustic Wave(SAW) Devices
High Conductivity SAW Grade Black LT Wafer
Introduction:
Lithium Tantalate is one of the most versatile materials. LiTaO3 has numerous applications including electro-optical modulators, pyroelectric detectors, optical waveguides, SAW substrates, and piezoelectric transducers due to unique electro-optical, pyroelectric, piezoelectric, and acoustic properties, a wide transparency range, and a high optical damage threshold combined with good chemical and mechanical stability.
Advantages:
- High optical damage threshold
- Wide transparency range
- Wide application
Material Properties:
|
Crystal Structure |
Trigonal |
|
Lattice Constant |
a=5.154Å,c=13.783Å |
|
Density |
7.45g/cm3 |
|
Melting Point |
1650℃ |
|
Curie Point |
603±2℃ |
|
Mohs Hardness |
5.5-6 Mohs |
|
Thermal Conductivity |
1015wm |
|
Refractive Indices |
n0=2.176 ne=2.180 @ 633mn |
|
E-O Coefficient |
R33=30.4 |
|
Transmission Range |
400-5000nm |
|
Pyroelectric Coefficient |
2.3×10-7 C/cm2/K |
|
Electromechanical Coupling Factor |
R15≥0.3 |
|
Thermal Expansion Coefficient |
a1=a2=1.61×10-6/℃, a3=4.1×10-6/℃ |
|
Dielectric Constant |
es11/eo:39~43, es33/eo:42~43；et11/eo:51~54, et33/eo:43~46 |
Crystro offers:
|
Size |
4" ,6" Boule or wafer ,Acoustic or Optical grade |
|
Doping |
No Doping or With Fe |
|
Boule Length |
≥50mm |
|
Wafer Thickness |
Thickness 0.25,0.35,0.50(mm) |
|
Orientation |
Y42°/Y36°/X/Y/Z or Upon Request |
|
Surface Process |
Single/Double Sides Polishing |
|
TTV |
< 10µm |
|
BOW |
± (25µm ~40um ) |
|
Warp |
≤35µm |
|
Flat Width |
32.0±2.0(mm) or Upon Request |
|
Roughness |
Ra≤10Å |
|
Chamfer |
≤0.1mm@45° |
Picture:
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