OHARA SK1300 Wafers

OHARA SK1300 is a high-quality optical glass substrate available in sizes ranging from 4 inches to 8 inches. This specialized glass has high purity and lower hydroxyl (OH) content compared to traditional methods, making it suitable for semiconductor and liquid crystal display applications.

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Brief Introduction

SK1300 offers excellent light transmission, particularly in the ultraviolet and visible wavelengths, with a typical transmission rate above 90%. It features good mechanical strength, heat resistance, and chemical durability. Its low dispersion and minimal birefringence make it ideal for precision optical applications.

SK1310 is an anhydrous synthetic fused silica that belongs to the SK-1300 series. It maintains the high reliability of heat resistance, mechanical strength, and chemical resistance found in SK1300. Additionally, SK1310 does not generate photolytic absorption in the infrared region of 2.73 µm due to the absence of hydrogenous radicals. This product offers maximum transmission across the ultraviolet, visible, and infrared spectra.

Both SK1300 and SK1310 exhibit outstanding physical and chemical characteristics, making them suitable for a wide range of applications in advanced technological industries, such as semiconductors and optics.

Product Parameters

The general specs are as follows sheet, if your specified is not included with it, you may freely tell us and we’ll pleased to customize them for you.

spec	unit	4"	6"	8"	10"	12”
Diameter/size(or square)	mm	100	150	200	250	300
Tolerance (±)	mm	0.2	0.2	0.2	0.2	0.2
Thickness	mm	0.10 or more	0.30 or more	0.40 or more	0.50 or more	0.50 or more
Primary reference flat	mm	32.5	57.5	Semi-notch	Semi-notch	Semi-notch
LTV (5mmx5mm)	µm	< 0.5	< 0.5	< 0.5	< 0.5	< 0.5
TTV	µm	< 2	< 3	<3	<5	<5
Bow	µm	±20	±30	±40	±40	±40
Warp	µm	≤ 30	≤ 40	≤ 50	≤ 50	≤ 50
PLTV(5mm*5mm)<0.4um	%	≥95%	≥95%	≥95%	≥95%	≥95%
Edge Rounding	mm	Compliant with SEMI M1.2 Standard/refer to IEC62276
Surface Type		Single Side Polished /Double Sides Polished
Polished side Ra	nm	≤1
Back Side Criteria	µm	general 0.2-0.7 or customized