Corning SG 3.4 Semiconductor Glass
Original Manufacturer Reference · Corning · Low-CTE semiconductor glass
Product Overview
Ultra-flat optical-grade semiconductor glass supplied as wafers or large panels, with a nominal CTE of 3.4 × 10⁻⁶/°C.
Typical Applications
- Semiconductor and advanced-packaging substrates
- MEMS carrier, capping and optical structures
- Low-CTE wafer or panel applications
Reference Specifications
The following values are condensed from the supplied manufacturer data sheet. Test conditions are retained where they affect interpretation.
| Wafer capability | 100–300 mm diameter; 0.2–1.3 mm thick; TTV ≤10 µm; warp ≤100 µm |
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| Panel capability | 0.4–2.0 mm; up to 600 × 600 mm; TTV ≤15 µm; warp ≤500 µm |
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| Density | 2.38 g/cm³ |
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| Young’s / shear modulus | 73.6 / 30.1 GPa |
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| Poisson’s ratio | 0.23 |
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| Vickers hardness / fracture toughness | 640 kgf/mm² / 0.82 MPa·m½ |
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| CTE | 3.4 × 10⁻⁶/°C |
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| Refractive index / Abbe number | 1.51 / 62.7 |
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China-Made Alternative Products
The Chinese alternative route targets low CTE, wafer flatness, optical-grade surfaces and panel scalability. For bonding or packaging, the complete thermal cycle and interface process must be qualified.
Recommended matching criteria:
- Low-CTE Chinese semiconductor glass
- 100–300 mm wafer and custom panel processing
- TTV, warp and bonding qualification
Target modelCritical parametersCandidate gradeSample testingBatch qualification
Customization and Processing
- Round wafers, square panels, windows and custom outlines
- Precision cutting, edge grinding, chamfering and laser processing
- Single- or double-side polishing, thinning, cleaning and marking
- TTV, warp, roughness, dimensional and optical inspection to agreed criteria
Qualification Note
Important: “Alternative” means a candidate selected for the same application target. It does not mean an automatic drop-in replacement or identical composition. Final acceptance is based on agreed specifications, samples, test reports and process verification.
Request Material Matching
Manufacturer and product names are used only to identify reference materials and technical targets. Semicon Global Tech is an independent supplier and does not claim manufacturer authorization unless explicitly stated. Original-grade data and China-made alternative specifications are presented separately; supply specifications are confirmed by quotation, COA and approved samples.
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