4 inch Sapphire Wafer C-Plane SSP/DSP 0.43mm 0.65mm

Short Description:

Sapphire is a material of a unique combination of physical, chemical and optical properties, which make it resistant to high temperature, thermal shock, water and sand erosion, and scratching.

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Product Detail

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Applications

● Growth substrate for III-V and II-VI compounds.
● Electronics and optoelectronics.
● IR applications.
● Silicon On Sapphire Integrated Circuit(SOS).
● Radio Frequency Integrated Circuit(RFIC).
In LED production, sapphire wafers are used as a substrate for the growth of gallium nitride (GaN) crystals, which emit light when an electric current is applied. Sapphire is an ideal substrate material for GaN growth because it has a similar crystal structure and thermal expansion coefficient to GaN, which minimizes defects and improves crystal quality.

In optics, sapphire wafers are used as windows and lenses in high-pressure and high-temperature environments, as well as in infrared imaging systems, because of their high transparency and hardness.

Specification

Item	4-inch C-plane(0001) 650μm Sapphire Wafers
Crystal Materials	99,999%, High Purity, Monocrystalline Al2O3
Grade	Prime, Epi-Ready
Surface Orientation	C-plane(0001)
	C-plane off-angle toward M-axis 0.2 +/- 0.1°
Diameter	100.0 mm +/- 0.1 mm
Thickness	650 μm +/- 25 μm
Primary Flat Orientation	A-plane(11-20) +/- 0.2°
Primary Flat Length	30.0 mm +/- 1.0 mm
Single Side Polished	Front Surface	Epi-polished, Ra < 0.2 nm (by AFM)
(SSP)	Back Surface	Fine ground, Ra = 0.8 μm to 1.2 μm
Double Side Polished	Front Surface	Epi-polished, Ra < 0.2 nm (by AFM)
(DSP)	Back Surface	Epi-polished, Ra < 0.2 nm (by AFM)
TTV	< 20 μm
BOW	< 20 μm
WARP	< 20 μm
Cleaning / Packaging	Class 100 cleanroom cleaning and vacuum packaging,
	25 pieces in one cassette packaging or single piece packaging.

Packing & Shipping

Generally speaking, we provide the package by 25pcs cassette box; we also can packed by single wafer container under 100 grade cleaning room according to the client's requirement.