Hangzhou Freqcontrol Electronic Technology Ltd.
Hangzhou Freqcontrol Electronic Technology Ltd. We Grow Crystal. We Fabricate Wafer. We are Piezoelectric Specialist.
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Preferred Choice for Semiconductor Devices LEDs and High-Temperature Electronics with Sapphire Wafers
Why Choose Our Sapphire Wafers?
Applications That Shine
From next-gen 5G/6G communication systems to high-power laser optics and medical imaging devices, our sapphire wafers empower innovation. Their ability to withstand temperatures up to 2,000°C and resist plasma erosion makes them indispensable for semiconductor manufacturing and advanced R&D.
Partner with Confidence
Backed by 15+ years of expertise in crystal growth and wafer processing, we guarantee rapid prototyping, flexible order volumes, and global logistics support. Elevate your product’s performance while reducing lifecycle costs—sapphire’s longevity outperforms traditional materials like glass or silicon.
OPTICAL PROPERTIES
| Transmission | 0.17 to 5.5 um |
| Refractive Index | 1.75449 (o) 1.74663 (e) at 1.06 um |
| Reflection Loss | at 1.06 microns (2 surfaces) for o-ray - 11.7%; for e-ray - 14.2% |
| Absorption Index | 0.3 x 10-3 cm-1 at 2.4 um |
| dN/dT | 13.7 x 10-6 at 5.4 um |
| dn/dm = 0 | 1.5 um |
| Orientation | R-plane, C-plane, A-plane, M-plane or a specified orientation |
| Orientation Tolerance | ± 0.3° |
| Diameter | 2 inches, 3 inches, 4 inches, 6 inches, 8 inches or others |
| Diameter Tolerance | 0.1mm for 2 inches, 0.2mm for 3 inches, 0.3mm for 4 inches, 0.5mm for 6 inches |
| Thickness | 0.25mm, 0.33mm, 0.43mm, 0.65mm, 1mm or others; |
| Thickness Tolerance | 25μm |
| Primary Flat Length | 16.0±1.0mm for 2 inches, 22.0±1.0mm for 3 inches, 30.0±1.5mm for 4 inches, 47.5/50.0±2.0mm for 6 inches |
| Primary Flat Orientation | A-plane (1 1-2 0 ) ± 0.2°; C-plane (0 0-0 1 ) ± 0.2°, Projected C-Axis 45 +/- 2° |
| TTV | ≤10µm for 2 inches, ≤15µm for 3 inches, ≤20µm for 4 inches, ≤25µm for 6 inches |
| BOW | ≤10µm for 2 inches, ≤15µm for 3 inches, ≤20µm for 4 inches, ≤25µm for 6 inches |
| Front Surface | Epi-Polished (Ra< 0.3nm for C-plane, 0.5nm for other orientations) |
| Back Surface | Fine ground (Ra=0.6μm~1.4μm) or Epi-polished |
| Packaging | Packaged in a class 100 clean room environment |
Acceptance Check
1. The product is fragile. We have adequately packed it and labeled it fragile. We deliver through excellent domestic and international express companies to ensure transportation quality.
2. After receiving the goods, please handle with care and check whether the outer carton is in good condition. Carefully open the outer carton and check whether the packing boxes are in alignment. Take a picture before you take them out.
3. Please open the vacuum package in a clean room when the products are to be applied.
4. If the products are found damaged during courier, please take a picture or record a video immediately. DO NOT take the damaged products out of the packaging box! Contact us immediately and we will solve the problem well.