We have decided to discontinue production and sales of this product as of December 2024.

Thank you very much for your patronage.

(Discontinued while supplies last)

Please use Shinkosha’s sapphire substrate for group
III nitride semiconductors such as blue and white LEDs.

Characteristics of Shinkosha’s sapphire substrate

Interferometer image

Excellent surface
Surface processed in sub-nano order!

Atomic force microscope (AFM) image

Excellent cleanliness
Our high cleaning capacity enables to provide suitable substrates for the deposition process!

Particle distribution on sapphire substrate surface

Excellent crystal
Substrates with good crystallinity available!

X-ray rocking curve of sapphire

Standard Specs

One-side polishing

Item	φ2 in	φ3 in	φ4 in
Diameter	50.8mm	76.2mm	100.0mm
Thickness	※	※	※
Flatness	＜13μm	＜15μm	＜20μm
Parallelism	＜10μm	＜15μm	＜20μm
Orientation-flat length	16±1mm	22±2mm	32±2mm

(※)…Please consult with us.