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Sapphire Wafers
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MOQ:
1 PCS
Delivery time:
5-20days
Payment:
Paypal,T/T or to be negotiated
Delivery:
DHL UPS FEDEX TNT
Place of Origin:
China
Product drawing:
will be offered for OEM products
Test report:
will be attached to each cargo delivery.
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Product Description

Sapphire Wafer

.

The sapphire wafer is a hexagonal single crystal material made of high purity alumina (Al2O3),  and has a high hardness, second only to diamond in natural materials.

First of all, the production technology of sapphire substrate is mature and the device quality is good; secondly, the stability of sapphire is very good, which can be used in the process of high temperature growth; finally, the mechanical strength of sapphire is high, easy to handle and clean. Therefore, most processes generally use sapphire as the substrate.

It is an ideal material for light-emitting diodes and laser diodes.

 Sapphire Wafer Parameter 

Item

2 Inch

4 Inch

6 Inch

Crystal
LED Grade Sapphire
LED Grade Sapphire
LED Grade Sapphire
Sapphire purity
≥99.998%
≥99.998%
≥99.998%
Color
Transparent
Transparent
Transparent
Orientation
C plane tiled M axis 0.20°±0.1°
C plane tiled M axis 0.20°±0.1°
C plane tiled M axis 0.20°±0.1°
Diameter
50.8±0.1mm
100±0.2mm
150±0.2mm
Thickness
430±15μm
650±25μm
1300±25μm
Primary Flat Location
A-axis ± 0.2
A-axis ± 0.2
A-axis ± 0.2
Flat Length
16.0±1.0 mm
30.0 ±1.0 mm
49.0±1.0 mm
Front Side Surface
Mirror polished , EPI-Ready
Mirror polished , EPI-Ready
Mirror polished , EPI-Ready
Surface Roughness

Ra < 3Å

Ra < 3Å

Ra < 3Å

Back Side Roughness
Fine ground, Ra=1.0±0.2um
Fine ground, Ra=1.0±0.2um
Fine ground, Ra=1.0±0.2um
TTV
≤ 5.0μm
≤ 10μm
≤ 15μm
BOW
0~-5um
0~-10um
0~-13um
Warp
≤ 10.0μm
≤ 15.0μm
≤ 40.0μm

Bubble & Color

None by visual inspection in intensive light
None by visual inspection in intensive light
None by visual inspection in intensive light
Ground Boundary
None by visual inspection in fluorescent light
None by visual inspection in fluorescent light
None by visual inspection in fluorescent light
Cleanliness
Free visible contamination
Free visible contamination
Free visible contamination
Packaging
Vacuum packed in one-piece box or Entegris cassettes of 25
Vacuum packed in one-piece box or Entegris cassettes of 25
Vacuum packed in one-piece box or Entegris cassettes of 25
Packaging
in a class 100 clean room, under a nitrogen atmosphere
in a class 100 clean room, under a nitrogen atmosphere
in a class 100 clean room, under a nitrogen atmosphere
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