Introduction of Silicon Nitride Wafer
Silicon Nitride (Si3N4) Wafers are high-performance semiconductor materials designed for precision applications in microelectronics, optoelectronics, and power systems. Built with ultra-high purity and surface perfection, these wafers deliver exceptional electrical insulation, thermal stability, and chemical resistance. They are widely used in wafer carriers, laser optics, and sensor manufacturing, ensuring reliability in extreme environments such as high-temperature processing and corrosive chemical exposure.

Silicon Nitride Wafer
Features of Silicon Nitride Wafer
Specifications of Silicon Nitride Wafer
| Parameter | Value/Range |
| Material | Silicon Nitride (Si3N4) |
| Diameter | 200–300 mm (standard) |
| Thickness | 0.3–1.5 mm |
| Density | 3.1–3.3 g/cm³ |
| Bending Strength | 800–1,000 MPa |
| Hardness (HV) | 14–15 GPa |
| Thermal Conductivity | 20–35 W/m·K |
| Max Operating Temp. | 1,400°C (continuous) |
| Thermal Expansion Coeff. | 2.7–3.0×10^-6/K (25–1,400°C) |
| Surface Roughness | <1 nm Ra |
| Purity | >99.99% |

Applications of Silicon Nitride Wafer

Packing and Storage
The product is in powder form and should be stored in a cool, ventilated place. Avoid inhalation when using it and keep away from open flames, heat sources, etc.

Packing and Storage
Company Profile
Luoyang Tongrun Nano Technology Co. Ltd. (TRUNNANO) is a trusted global chemical material supplier & manufacturer with over 12-year-experience in providing super high-quality chemicals and nanomaterials, including boride powder, nitride powder, graphite powder, sulfide powder, 3D printing powder, etc.
The company has a professional technical department and Quality Supervision Department, a well-equipped laboratory, and equipped with advanced testing equipment and after-sales customer service center.
If you are looking for high-quality Silicon Nitride Wafer please feel free to contact us or click on the needed products to send an inquiry.

Company Profile
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ShipmentTerm
By air, by sea, by express, as customers request.
FAQs of Silicon Nitride Wafer
Q1: How does silicon nitride compare to silicon dioxide in semiconductor applications?
Re: Silicon nitride offers higher thermal stability, lower stress, and better dielectric strength than SiO₂, making it suitable for high-power and high-frequency devices.
Q2: Can silicon nitride wafers be customized for specific resistivity?
Re: Yes, doping adjustments allow tailoring of resistivity to meet application requirements (e.g., conductive or insulating layers).
Q3: What industries benefit most from silicon nitride wafers?
Re: Semiconductors, aerospace, medical devices, MEMS, and renewable energy sectors.
Q4: Does purity affect performance?
Re: Absolutely. Higher purity (>99.99%) ensures minimal defects, critical for high-reliability applications like aerospace.
Q5: Are silicon nitride wafers compatible with standard semiconductor processing?
Re: Yes, they integrate seamlessly with photolithography, etching, and deposition techniques.